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A&p2 > Reproductive System Pt.2 > Flashcards

Reproductive System Pt.2 Flashcards

1
Q

Female reproductive system

A

■ Produces sex hormones and functional gametes
■ Protects and supports developing embryo
■ Nourishes newborn

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2
Q

Ovaries

A

■ Are small, almond-shaped organs:
- near posterior walls of pelvic cavity
- 5 cm long, 2.5 cm wide, 8mm thick
-weigh 6–8 g

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3
Q

Ovaries held in position by

A

Ovarian and suspensory ligaments of mesovaria

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4
Q

Ovaries contains what type of follicle

A

Oocyte-containing follicles

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5
Q

3 fictions of ovaries

A

■ Production of immature female gametes (oocytes)
■ Secretion of female sex hormones (estrogens, progestins)
■ Secretion of inhibin:
-feedback control of pituitary FSH

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6
Q

Stroma

A

■ Are interior tissues of ovary:
-superficial cortex
-deeper medulla
■ Gametes are produced in ovaries

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7
Q

Uterine tube

A

-supported by mesosalpinx
-extends from near ovary to uterus
-movements of its ciliated distal projections (fimbriae) along w/ peristalsis creates currents to help move ovulated locate in the uterine tube

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8
Q

Uterine wall composed of:

A

-outer perimetrium
-myometrium
-inner endometrium

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9
Q

Endometrium consists of:

A

-functional layer (stratum functionalis)
-sloughs off periodically unless an embryo has implanted
-underlying basal layer (stratum basalis)
-rebuilds functional layer

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10
Q

Vagina

A

-extends from uterus to exterior
-copulatory organ
-allows passage of menstrual flow or baby

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11
Q

Oogenesis

A

■ Also called ovum production
■ Begins before birth
■ Accelerates at puberty
■ Ends at menopause

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12
Q

Atresia

A

■ Is the degeneration of primordial follicles:
■ Ovaries have about 2 million primordial follicles at birth:
-each containing a primary oocyte
■ By puberty:
-number drops to about 40,000

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13
Q

Why are women more at risk for pid than men?

A

B/c duct system of women is incomplete- there is no physical connection between ovary and uterine tubes, which are open to the pelvic cavity.

In men, duct system is continuous from testes to body exterior

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14
Q

Process of oogenesis

A

■ Primary oocytes remain in suspended development until puberty
■ At puberty:
-rising FSH triggers start of ovarian cycle
■ Each month thereafter:
-some primary oocytes are stimulated to mature further during menstrual cycle

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15
Q

Oogenesis: 2 characteristics of meiosis

A

■ Cytoplasm of primary oocyte divides unevenly:
-producing 1 ovum (with original cytoplasm)
-and 2 or 3 polar bodies (that disintegrate)
■ Ovary releases secondary oocyte (not mature ovum):
-suspended in metaphase of meiosis II

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16
Q

Locates are ovulated into the peritoneal cavity and yet women do get pregnant. What action if the uterine tubes helps to direct locates into woman’s duct system?

A

Waving action of fimbriae and currents created by beating cilia help to direct ovulated locates into uterine tube

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17
Q

Ovarian follicles

A

■ Are specialized structures in cortex of ovaries:
-where oocyte growth and meiosis I occur

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18
Q

Primary oocytes

A

■ Are located in outer part of ovarian cortex:
-near tunica albuginea
-in clusters called egg nests

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19
Q

Primordial follicle

A

■ Each primary oocyte in an egg nest:
-is surrounded by 1 layer of follicle cells
■ immature oocyte and follicle cells form a primordial follicle (1 year before ovulation)
-different group of primordial follicles are activated each mo

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20
Q

Vulva (fem genitalia) include:

A

-Mons pubis
-labia majors and minora
-clitoris
-urethral and vagina orficies

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21
Q

Ovarian cycle: step 1

A

■ Formation of primary follicles:
-pre-granulosa cells become granulosa cells when multiple layers develop
Zona Pellucida
■ Region surrounding primary oocyte
■ Contains microvilli and glycoproteins

Thecal Cells
■ Surround follicle
■ Work with granulosa cells to produce estrogens
The Ovarian Cycle: Step 1
• Formation of primary follicles:
o follicle cells become granulosa cells when multiple layers develop

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22
Q

What is female homologous of bulbo-urethral glands of males?

A

Greater vestibular glands

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23
Q

Ovarian cycle: step 2

A

■ Formation of secondary follicles
■ Follicular fluid:
-accumulates between inner and outer layers of
​follicle

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24
Q

Ovarian cycle: step 3

A

■ Formation of a tertiary (mature Graafian) follicle:
-primary oocyte produces secondary oocyte and polar body
■ Secondary oocyte drifts free in antrum (expanded central chamber of follicle)
Corona Radiata
■ Granulosa cells associated with secondary oocyte

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25
Q

Cite similarities and differences between penis and citoris.

A

Both hooded by skin fold and are largely erectile tissue

Clitoris lacks corpus spongiosum containing urethra, so urinary and reproductive systems are completely separated in females

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26
Q

Tissues surrounding mammary glands

A

Adipose and fibrous connective tissue

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27
Q

Ovarian cycle: step 4

A

■ At ovulation:
■ tertiary follicle releases secondary oocyte with its corona radiata to peritoneal cavity
■ What remains is called the Corpus Hemorrhagicum
-It develops into the Corpus Luteum

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28
Q

Ovarian cycle: step 5

A

■ Formation of corpus luteum:
-produces steroid hormones progestins (progesterone) and some estrogen from cholesterol
■ Progesterone prepares uterine lining for pregnancy

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29
Q

Developmentally, mammary glands are modifications of certain skin glands. Which type?

A

Sweat glands

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30
Q

When does the glandular portion of breast develop in females?

A

Midway through pregnancy

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31
Q

Ovarian cycle: step 6

A

■ If fertilization does not occur
■ corpus luteum:
▪ degenerates about 14 days after ovulation
▪ fills with scar tissue to become corpus albicans

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32
Q

Uterine tubes

A

■ Fallopian tubes or oviducts
■ Are hollow, muscular tubes about 13 cm long
■ Transport oocyte from ovary to uterus
3 Segments of the Uterine Tube
■ Infundibulum:
-an expanded funnel near ovary
-fimbriae extend into pelvic cavity
■ Inner surfaces lined with cilia:
-beat toward infundibulum segment

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33
Q

3 segments of uterine tube

A

1.Ampulla:
-middle and longest segment
-smooth muscle layers in wall become thicker approaching uterus
2.Isthmus:
-a short segment between ampulla and uterine wall
3.infundibulum

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34
Q

Uterine tube structure

A

■ Epithelium lining uterine tube:
-contains scattered mucin secreting cells
■ Mucosa is surrounded by concentric layers of muscle

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35
Q

Oogenesis

A

Production of eggs
Begins in fetus

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36
Q

Oogonia

A

-Diploid stem cells that give rise to female gametes
-converted to oocytes before birth

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37
Q

Uterine tube and oocyte transport

A

■ Involves:
-ciliary movement
-peristaltic contractions in walls of uterine tube
-These processes are turned on by the ANS shortly before ovulation
■ ​It usually takes 3-4 days for the egg to reach the uterus

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38
Q

Meiosis

A

-puberty: meiosis resumes
-each mo, 1 primary oocyte completes meiosis I, producing secondary oocyte and tiny 1st polar body
-meiosis II or secondary oocyte produces functional ovum and 2nd polar body, but does not occur in less sperm penetrates secondary oocyte
-ovum contains most of primary oocytes cytoplasm. Polar bodies are nonfunctional and degenerate

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39
Q

Spermatogenesis vs Oogenesis

A

1 egg
4 sperm cells

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40
Q

Uterine tube and fertilization

A

■ For fertilization to occur:
-secondary oocyte must meet spermatozoa during first 12–24 hours – egg viable for 24hrs
■ Fertilization typically occurs:
-near boundary between ampulla and isthmus

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41
Q

Unfertilized oocytes

A

■ Degenerate in terminal portions of uterine tubes:
-or within uterus

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42
Q

Uterus

A

■ Provides for developing embryo (weeks 1–8) and fetus (week 9 through delivery):
-mechanical protection
-nutritional support
-waste removal
■ Is pear-shaped:
-7.5 cm long, 5 cm diameter
-weighs 30–40 g
■ Normally bends anteriorly near base (anteflexion):
-in retroflexion, uterus bends backward (20% incidence; no significance)

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43
Q

How do haploid cells arising from Oogenesis differ structurally and functionally from those arising from spermatogenesis.

A

Products of meiosis in females are 2 or 3 nonfunctional polar bodies (tiny haploid cells w/ essentially no cytoplasm) and 1 haploid ovum (functional gamete)

Meiosis in males yield 4 functional gametes, haploid sperm

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44
Q

3 suspensory ligaments of uterus

A

■ Uterosacral ligaments:
-extend from uterus to sacrum
-prevent inferior–anterior movement
■ Round ligaments:
-extend through inguinal canal
-end in connective tissues of external genitalia
-restrict posterior movement
■ Lateral (cardinal) ligaments:
-extend from base of uterus and vagina
-to lateral walls of pelvis
-prevent inferior movement

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45
Q

2 regions of uterus

A

■ Body
■ Cervix
The Uterine Body
■ Also called corpus
■ Is largest portion of uterus
■ Ends at isthmus
The Fundus
■ Is rounded portion of uterine body:
-superior to attachment of uterine tubes

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46
Q

What name is given to fluid-filled cavity of a vestibular follicle?

A

Antrum

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47
Q

The cervix

A

■ Is inferior portion of uterus
■ Extends from isthmus to vagina
■ Distal end projects about 1.25 cm into vagina
The Cervical Os
■ Also called external orifice of uterus
■ Is surrounded by distal end of cervix
■ Leads into cervical canal
The Cervical Canal
■ Is a constricted passageway opening to uterine cavity of body:
-at internal os (internal orifice)

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48
Q

Follicular phase of ovarian cycle

A

-1-14 days
-several vesicular follicles are rescued from atresia and continue to grow.
-only 1 per mo is selected to become
dominant follicle and completes maturation process
-late in this phase, oocyte in the dominant follicle completes meiosis I
-ovulation occurs about day 14, releasing secondary oocyte into peritoneal cavity, other developing follicles deteriorate

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49
Q

Cervical cancer

A

▪ 50,000 women/yr worldwide– killing half
▪ Most common between 30 – 50
▪ Risks – frequent cervical inflammations, STIs, multiple pregnancies
▪ Papanicolaou (Pap) smear for detection
-Every two years 21 – 30; every year > 30; discontinue at 65 if negative for 10 years
▪ Pap smear results inconclusive
-Test for human papillomavirus – cause of most cervical cancers
▪ Gardasil – three-dose vaccine; protects against HPV
-Recommended for 11- and 12-year-old girls

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50
Q

Blood supply of uterus

A

■ ranches of uterine arteries:
-arising from branches of internal iliac arteries
■ Ovarian arteries:
-arising from abdominal aorta
■ Veins and lymphatic vessels
Nerves of the Uterus
■ Autonomic fibers from hypogastric plexus (sympathetic)
■ Sacral segments S3 and S4 (parasympathetic)
■ Segmental blocks:
-anesthetic procedure used during labor
-target spinal nerves T10–L1

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51
Q

Literal phase of ovarian cycle

A

-ruptured follicle is converted to a corpus luteum, which produces progesterone and estrogens for the remainder of the cycle
-if fertilization does not occur, corpus luteum degenerated after about 10 days

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52
Q

Perimetrium

A

■ Is an incomplete serous membrane:
-continuous with peritoneal cavity
■ Covers:
-fundus
-posterior surface of uterine body and isthmus

53
Q

Name and describe phases of one ovarian cycle and relate them to the events of oogenesis

A

Ovarian cycle has 2 parts - the follicular phase and the luteal phase. The follicular phase occurs from day 1-14 and the luteal phase from day 14-28 with ovulation occuring on day 14. During the folicular phase the follicle grows. It goes from the primordial follicle, to the primary follicle, to the secondary follicle, to the late secondary follicle, to the vesicular follicle. During the late secondary follicle phase, the zona pellucida develops and connective tissue (theca folliculi) work with granulosa cells to produce estrogens. Ovulation occurs after the oocyte is in the vesicular follicle. The walls of the follicle erupt and the oocyte is ejected. The luteal phase is the time in which the corpus luteum is active. Once the oocyte is ejected, the ruptured follicle collapses. The collapsed follicle is known as the corpus lutuem and it secretes estrogens and progesterones. If no fertilization occurs, the corpus luteum degenerates and becomes the corpus albicans. If pregnancy does happen, the corpus luteum produces hormones that sustains the uterus until the placenta develops.

54
Q

Endometrium

A

■ Contributes about 10% of uterine mass
■ Glandular and vascular tissues support physiological demands of growing fetus

55
Q

Uterine glands

A

■ Open onto endometrial cavity
-Simple columnar epithelium
■ Extend deep into lamina propria
-Areolar connective tissue

56
Q

How do identical twins differ from fraternal twins?

A

Identical- develop from separation of a very young embryo (result of fertilization of single oocyte by single sperm) into 2 parts

Faternal- develop when different oocytes are fertilized by different sperm

57
Q

Estrogen

A

Causes uterine glands, blood vessels, and epithelium to change with phases of monthly uterine cycle

58
Q

Myometrium

A

■ The thickest portion of the uterine wall
■ Constitutes almost 90% of the mass of the uterus
Smooth Muscle in the Myometrium
■ Is arranged into longitudinal, circular (middle), and oblique layers
■ Provides force to move fetus out of uterus into vagina
■ ​Contractions stimulated by oxytocin

59
Q

How long does establishment of cyclic pattern of hormone secretion, indicated by menarche take?

A

4 yrs

60
Q

Leptin

A

-permissive role during puberty onset
-stimulates hypothalamus when adipose tissue is sufficient for energy requirements for reproduction

61
Q

2 division of endometrium

A

■ Functional zone (stratum Functionalis):
-layer closest to uterine cavity
■ Basilar zone (stratum Basalis):
-adjacent to myometrium

62
Q

Hormonal events of ovarian cycle:

A

1) GnRH stimulates anterior pituitary to release FSH and LH, which stimulate follicle maturation and estrogen production
2) when blood estrogens reach certain level, (+) feedback exerted on hypothalamic-pituitary-gonadal axis cause sudden release if LH that stimulates primary oocyte to continue meiosis of LG that stimulates the primary oocyte to continue meiosis and triggers ovulation. LH causes conversion of ruptured follicle to a corpus luteum and stimulates its secretory activity
3)rising levels of progesterone and estrogens inhibit hypothalamic-pituitary-gonadal (HPG) axis, corpus luteum deteriorates, ovarian hormones drop to their lowest levels, and cycle begins anew

63
Q

Functional zone

A

■ Contains most of uterine glands
■ Contributes most of endometrial thickness
■ Undergoes dramatic changes in thickness and structure during menstrual cycle

64
Q

Functional zone

A

■ Contains most of uterine glands
■ Contributes most of endometrial thickness
■ Undergoes dramatic changes in thickness and structure during menstrual cycle

65
Q

Basilar zone

A

■ Attaches endometrium to myometrium
■ Contains terminal branches of tubular endometrial glands

66
Q

Maturation of primordial follicle from its recruitment until it is ready to be ovulated takes how many days?

A

290

67
Q

Maturation of primordial follicle from its recruitment until it is ready to be ovulated takes how many days?

A

290

68
Q

Blood supply of endometrium

A

■ Arcuate arteries:
-encircle endometrium
■ Radial arteries:
-supply straight arteries (to basilar zone)
-supply spiral arteries (to functional zone)
■ spiral arteries are kept open by progesterone and estrogen
Cyclical Changes in Endometrium
■ Basilar zone remains relatively constant
■ Functional zone undergoes cyclical changes:
-in response to sex hormone levels
-produce characteristic features of uterine cycle

69
Q

Blood supply of endometrium

A

■ Arcuate arteries:
-encircle endometrium
■ Radial arteries:
-supply straight arteries (to basilar zone)
-supply spiral arteries (to functional zone)
■ spiral arteries are kept open by progesterone and estrogen
Cyclical Changes in Endometrium
■ Basilar zone remains relatively constant
■ Functional zone undergoes cyclical changes:
-in response to sex hormone levels
-produce characteristic features of uterine cycle

70
Q

Uterine cycle phases

A

-menstrual phase (days 0-4): functional layer sloughs off in menses
-proliferative phase (days 5-14): rising estrogen levels stimulate its regeneration.
-Under influence of both estrogens and progesterone during secretory phase (days 15-28): uterine glands secrete nutrients, and endometrial vascularity increases further
-

71
Q

Uterine cycle phases

A

Repeated Changes in endometrium
-menstrual phase (days 0-4): functional layer sloughs off in menses
-proliferative phase (days 5-14): rising estrogen levels stimulate its regeneration.
-Under influence of both estrogens and progesterone during secretory phase (days 15-28): uterine glands secrete nutrients, and endometrial vascularity increases further

72
Q

Falling levels of ovarian hormones during the last few days if ovarian cycle causes…

A

Spiral arteries to become spastic and cut off blood supply of functional layer. Uterine cycle begins again w/ menstruation

73
Q

Menses

A

■ Is the degeneration of functional zone:
-occurs in patches
■ Is caused by constriction of spiral arteries:
-reducing blood flow, oxygen, and nutrients
■ Lack of Estrogen and Progesterone causes the release of prostaglandins which cause the spiral artery constriction
■ Weakened arterial walls rupture:
-releasing blood into connective tissues of functional zone
■ Degenerating tissues break away, enter uterine lumen
■ Entire functional zone is lost:
-through cervical os and menstruation
■ Only functional zone is affected:
-deeper, basilar zone is supplied by straight arteries

74
Q

Proliferative phase (preovulatory)

A

■ Epithelial cells of uterine glands:
-multiply and spread across endometrium
-restore integrity of uterine epithelium
■ Further growth and vascularization:
-completely restores functional zone
-Occurs at same time as:
■ enlargement of primary and secondary follicles in ovary
-Is stimulated and sustained by:
■ estrogens secreted by developing ovarian follicles
■ Entire functional zone is highly vascularized
■ Small arteries:
-spiral toward endometrium
-from larger arteries in myometrium
Endometrial Glands
■ Manufacture mucus rich in glycogen:
1essential for survival of fertilized egg

75
Q

Cervical mucus

A

■ from cervical mucosa
■ ​Thinner and more alkaline around ovulation
■ ​Thicker and harder for sperm to navigate
■ ​Supplemental energy source for sperm
■ ​May be involved in capacitation of sperm

76
Q

Estrogen

A

-promotes oogenesis
-stimulates growth of reproductive organs and growth spurt and promote appearance of secondary sex characteristics

77
Q

secretory phase (postovulatory)

A

■ Endometrial glands enlarge
■ Arteries of uterine wall:
-elongate
-spiral through functional zone
-Begins at ovulation
-Persists as long as corpus luteum remains intact
(Why?)
■ Peaks about 12 days after ovulation
■ Generally lasts 14 days

78
Q

Progesterone

A

Cooperates with estrogens in breast maturation and regulation of uterine cycle

79
Q

Estrogen major source

A

Ovary: developing follicles and corpus luteum

80
Q

Estrogen Stimulus for release

A

FSH and LH

81
Q

Estrogen effects in reproductive organs

A

Stimulate growth and maturation of reproductive organs and breast at puberty and maintain their adult size and function. Promote the proliferative phase of uterine cycle. Stimulate production of watery cervical mucus and activity if fimbriae and uterine tube cilia

Promote oogenesis and ovulation

During pregnancy, stimulate growth of uterus and enlargement of external genitalia and mammary glands

82
Q

Estrogen promotion of secondary sex characteristics and somatic effects

A

Promote long bone growth followed by epiphyseal closure and feminization if skeleton (pelvis)

Inhibit bone reabsorption

Promote female pattern of fat deposit

83
Q

Estrogen metabolic effects

A

Generally anabolic. Stimulate Na+ reabsorption by renal tubules, which inhibits diuresis

Enhance HDK (and reduce LDL) blood levels (cardiovascular sparing effect)

84
Q

Estrogen neural effects

A

Along w/ DHEA (an androgen produced by adrenal cortex) are partially responsible for female libido

85
Q

Progesterone major source

A

Ovary: mainly the corpus luteum

86
Q

Progesterone stimulus for release

A

LH

87
Q

Progesterone effects on reproductive organs

A

Cooperates we/ estrogen a in stimulating growth of breasts

Promotes secretory phase if uterine cycle

Stimulates production of viscous cervical mucous

Progesterone surge after ovulation enhances beating of cilia in uterine tube, promoting netting of sperm and oocyte

During pregnancy, quiets the myometrium and acts w/ estrogens to cause mammary glands to achieve their mature milk-producing state

88
Q

Progesterone metabolic effects

A

Promotes diuresis (antiestrogenic effect)

Increases body temp

89
Q

Progesterone metabolic effects

A

Promotes diuresis (antiestrogenic effect)

Increases body temp

90
Q

Testosterone major source

A

Testes: Interstitial endocrine cells

91
Q

Testosterone major source

A

Testes: Interstitial endocrine cells

92
Q

Testosterone stimulus for release

A

LH

93
Q

Estrogen feedback effects exerted

A

Both (-) and (+) feedback on gonadotropin release by the anterior pituitary and GnRH release by hypothalamus

94
Q

Testosterone effects on reproductive organs

A

Stimulates formation of male reproductive ducts, glands, and external genitalia. Promotes descent of testes. Stimulates growth and maturation if internal and external genitalia at puberty; maintains their adult size and function

Required for normal spermatogenesis; ABP keeps its concentration high near spermatogenic cells

95
Q

Progesterone feedback effects exerted

A

(-) feedback on gonadotropin release by anterior pituitary and GnRH release by hypothalamus

96
Q

Testosterone promotion of secondary sex characteristics and somatic effects

A

Promotes (after conversion of estrogen) long bone growth followed by epiphyseal closure; promotes increased skeletal and muscle mass during adolescence. Promotes growth of larynx and vocal cords and deepening of voice. Enhances sebum secretion and hair growth, especially on face, axillae, genital region, and chest

97
Q

Testosterone promotion of secondary sex characteristics and somatic effects

A

Promotes (after conversion of estrogen) long bone growth followed by epiphyseal closure; promotes increased skeletal and muscle mass during adolescence. Promotes growth of larynx and vocal cords and deepening of voice. Enhances sebum secretion and hair growth, especially on face, axillae, genital region, and chest

98
Q

Testosterone feedback effects exerted

A

(-) feedback on gonadotropin release by anterior pituitary and GnRH release by hypothalamus

99
Q

Testosterone metabolic effects

A

Anabolic

Stimulates hematopoiesis

Enhance basal metabolic rate

100
Q

Testosterone neural effects

A

Responsible for libido in males

Promotes aggressiveness

101
Q

Which hormone plays role in signaling brain that puberty may begin in girls?

A

Leptin

102
Q

Which hormone promotes ovulation?

A

LH

103
Q

Which gonadal hormones exert (+) feedback in anterior pituitary that results in burst like release of LH?

A

Estrogen

104
Q

Which hormones cause secondary sex characteristics to appear in women?

A

Estrogen

105
Q

Which gonadal hormones promote epiphyseal closure in both males and females, and what is the effect of epiphyseal closure?

A

Estrogens
Long bones stop growing in length when epiphyseal are ossified

106
Q

Which glands help to lubricate vestibule?

A

Vestibular glands

107
Q

STI

A

Spread via sexual contact; gonorrhea, syphilis, chlamydia (bacterial)

Trichomoniasis (parasitic)

Syphilis can infect organs throughout the body

108
Q

Viral infection

A

Herpes and warts caused by HPV virus

Linked to cervical cancer

109
Q

Gonads of both sexes arise from

A

Mesodermal gonadal ridges

110
Q

Produce male accessory ducts and glands

A

Mesonephric ducts

111
Q

Produce female duct system

A

Paramesonephric ducts

112
Q

Why does only egg, rather than 4 eggs, developing during oogenesis?

A

Unequal cytoplasmic division ensures that a fertilized egg has ample nutrients for its journey to the uterus.

113
Q

Formation of a secondary oocyte occurs during _

A

Follicular phase; during 1st meiotic division of oogenesis

114
Q

Surge in _ directly triggers ovulation

A

LH

115
Q

What even coincides w/ transition from proliferative phase to secretory phase?

A

Ovulation ovcurs

116
Q

what ovarian structure forms at the beginning of the secretory phase, encouraging its progress and the degenerates just before menses?

A

Corpus luteum

117
Q

During the secretory phase of uterine cycle, _

A

Endometrium prepares for implantation

118
Q

During the secretory phase of uterine cycle, _

A

Endometrium prepares for implantation

119
Q

what hormone produced in anterior pituitary works in conjuction with gonadal steroids to promote bone growth in males?

A

FSH

120
Q

Round ligament

A

Anchors uterus and ovary

121
Q

_ is shed during each menstrual and is then regenerated by the _

A

Functional layer of endometrium; myometrium

122
Q

what layer of uterus is made of smooth muscle?

A

Myometrium

123
Q

if an untrained person induces an abortion and severely puncture posterior vaginal wall, there is a potential risk if puncture wound extending onward into the wall of the _

A

Rectum

124
Q

what part of breast produces milk?

A

Aveoli

125
Q

Corpus Albicans

A

Fibrous scar tissue that was once corpus luteum that has since died from not getting signal from embryo

-result of fertilization not occurring
-cannot be stimulated by LH
-cannot produce progesterone

126
Q

Endometrium layer

A

-stratum functionalis
-contains spiraled and could arteries
-stratum basalis
-contains straight arteries

127
Q

Menstruation phase

A

Shedding of stratum functionalis and spiraled and coiled arteries

Days 1-5

128
Q

Proliferation phase

A

-estrogen stimulates regeneration of S. functionalis and spiraled and coiled arteries
-days 6-14
-making of uterine glands
-thin cervical mucus production (allows sperm to pass)

129
Q

Secretory phase

A

-progesterone stimulates…
-s. Functionalis becoming thicker
-spiraled and coiled arteries to become longer
-uterine gland to secrete nutrient-rich “broth” (contains glycogen, lipids, and proteins)
-formation of thick cervical mucus to prevent organism from entering (protecting potential embryo)
-days 15-28

A&p2 (6 decks)

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