FEMALE REPRODUCTIVE SYSTEM (LEC) Flashcards
produces new individuals and makes use of sex cells/gametes
Sexual reproduction
formed by testes and ovaries
Gametes (sperm & egg)
produces one cell (a zygote)with one set of
chromosomes from each parent
Fertilization
Creates genetic variation
Sexual reproduction
produce gametes & secrete sex hormones
Gonads
study of female reproductive system
Gynecology
study of urinary & male reproductive system
Urology
produce eggs (oöcytes) & hormones
Ovaries
transport the eggs
Uterine tubes
where fetal
development occurs
Uterus
birth canal
Vagina
constitute the vulva
External genitalia
produce milk
Mammary glands
Pair of organs, size of
unshelled almonds in
upper pelvic region
The Ovary
Capsule of dense Connective tissue
The Ovary
just deep to
capsule; contains follicles
with egg cells (oöcytes)
Cortex
middle region
composed of connective
tissue, blood vessels &
lymphatics
Medulla
peritoneal membrane
covering the ovary
Germinal epithelium
Contain oöcytes (egg cells) in various stages of development
Ovarian Follicles
Ovarian Follicles secrete _____ that function for
* Growth and repair of uterine lining
* Regulation of monthly female cycle
* Female sexual characteristics (women smooth muscle, curvy body, high pitched voice)
* Maintenance of bone and muscle
estrogens
In Ovarian Follicles ______ releases an oöcyte
each month during ovulation
Mature (Graafian) follicle
In Ovarian Follicles _______ develop
within follicles
Oöcytes (egg cells)
In Ovarian Follicles ______ is a Single layer of squamous cells
around the oöcyte
Primordial follicle
In Ovarian Follicles ______ have Layers of cuboidal granulosa
cells around the oöcyte
* Granulosa cells secrete
estrogens
Primary follicle
In Ovarian Follicles ______ is where Antral cavity forms
Secondary follicle
In Ovarian Follicles ______ is where Follicle mature ready to ovulate
oöcyte
Graafian follicle
Follicle ruptures
releasing oöcyte
Ovulation
After ovulation, empty follicle
becomes a _______
Corpus Luteum
Corpus Luteum secretes _______ which completes the
preparation of uterine lining
Progesterone
Corpus Luteum secretes _______ which work with progesterone
Estrogens
Corpus Luteum secretes _______ which relaxes uterine muscles
and pubic symphysis
Relaxin
Corpus Luteum secretes _______ which decreases secretion of
FSH and LH
Inhibin
a white scar tissue left after the corpus luteum dies.
Corpus albicans
In Oögenesis Germ cells from yolk sac migrate to ovary and become potential egg cells called _______
oögonia
In _______ millions of oögonia produced by mitosis
but most of them degenerate (atresia)
fetus
Some develop into immature egg cells called
________ during fetal development
primary oöcytes
200,000 to __________ of primary oöcytes are present at birth then 40,000 remain at puberty but only ____ mature during a
woman’s reproductive life
2 million and 400
Each month about __ primary oöcytes become
secondary oöcytes but usually only one survives to
be ovulated from Graffian follicle
20
Egg forming cells (oöcytes) go through
two divisions
Oögenesis
In Oögenesis it Starts with a 2n=46 1º/primary oöcyte that divides, resulting in two n=23 cells,
but one is a large 2º/secondary oöcyte and one is a small 1st polar body that may itself divide
_______ only occurs if
2º/secondary oöcyte is fertilized. Results in one large n=23 ovum (egg) and one small n=23 2nd polar body
Second division
Oögenesis results in one large
________ (zygote) and possibly
three small polar bodies
fertilized egg
Narrow, 4 inch tube
that extends from the
ovary to uterus
Uterine or Fallopian Tubes
In Uterine or Fallopian Tubes _______ is open,
funnel-shaped portion
near the ovary
Infundibulum
In Uterine or Fallopian Tubes ____ are moving
finger-like processes
Fimbriae
In Uterine or Fallopian Tubes _____ is central
region of tube
Ampulla
In Uterine or Fallopian Tubes ______ is the narrowest portion that joins the uterus
Isthmus
events occurring in the uterine tube
______ sweep oöcyte into tube
Fimbriae
events occurring in the uterine tube
_____ and peristalsis move oöcyte along
Cilia
events occurring in the uterine tube
_____ reaches oöcyte in ampulla
Sperm
occurs within 24 hours after ovulation
Fertilization
reaches uterus about 7 days after ovulation
Zygote
Site of menstruation
& development of fetus
Uterus
the uterus is _____ inches long by 2 inches. Wide and 1 inches thick
3
Subdivided into fundus,
body & cervix
Uterus
In the Uterus
Simple columnar epithelium
– Stroma of connective tissue
and endometrial glands
Endometrium
In the Uterus the Endometrium has _____ that sheds during menstruation
Functional layer
In the Uterus the Endometrium has _____ that Replaces functional layer
each month
Basal layer
In the Uterus the ______ has 3 layers of smooth muscle
Myometrium
In the Uterus the ______ has a Visceral peritoneum
Perimetrium
Changes in the Endometrium
Stage 1: Day 1-5
menstruation
Changes in the Endometrium
Stage 2: Day 5-13
pre-ovulatory stage
Changes in the Endometrium
Stage 3: Day 14
ovulation
Changes in the Endometrium
Stage 4: Day 15-28
post-ovulatory stage
Blood Supply to the Uterus
________ branch as arcuate arteries and radial
arteries that supply the myometrium
Uterine arteries
Blood Supply to the Uterus
____ & ____ branches penetrate to the endometrium
– their constriction due to hormonal changes starts menstrual cycle
– Degeneration and regeneration of spiral arteries causes the
functionalis to shed during menstruation
Straight & spiral branches
Blood Supply to the Uterus
______ supply the stratum functionalis and is responsible for bloody menstruation
spiral arteries
Female organ of copulation
Vagina
Passageway for birth, menstrual flow and intercourse
Vagina
– 4 inch long fibromuscular organ ending at cervix
– Lies between urinary bladder and rectum
– Orifice partially closed with membrane (hymen)
Vagina
pudendum
vagina
Lies external to the vagina and includes the mons
pubis, labia, clitoris, and vestibular structures
External Genitalia: Vulva (Pudendum)
in External Genitalia: Vulva (Pudendum)
the _____ is a round, fatty area overlying the pubic
symphysis
Mons pubis
in External Genitalia: Vulva (Pudendum)
the _____ is a elongated, hair-covered, fatty skin folds homologous to the male scrotum
Labia majora
in External Genitalia: Vulva (Pudendum)
the _____ is a hair-free skin folds lying within the labia majora; homologous to the ventral penis
Labia minora
in External Genitalia: Vulva (Pudendum)
the _____ is a
– Pea-size glands flanking the vagina
– Homologous to the bulbourethral glands
– Keep the vestibule moist and lubricated
Greater vestibular glands
in External Genitalia: Vulva (Pudendum)
the _____ (homologous to the penis) is a
– Erectile tissue hooded by the prepuce
– The exposed portion is called the glans
Clitoris
in External Genitalia: Vulva (Pudendum)
the _____ is a
– Diamond-shaped region between the pubic arch
and coccyx
– Bordered by the ischial tuberosities laterally
Perineum
Modified sweat glands that produce milk (lactation)
Mammary Glands
Amount of adipose tissue determines ______
size of breast
Milk-secreting mammary glands alveoli open by ______ at the nipple
lactiferous ducts
pigmented area around nipple
Areola
suspend breast from deep fascia of pectoral muscles
Suspensory (Cooper’s) ligaments
Milk production and secretion
develop the ducts system in the breasts
Estrogens
Milk production and secretion
develop the milk-secreting glands
which are called alveoli
Progesterone
Milk production and secretion
stimulate milk synthesis in the alveoli
Prolactin
Milk production and secretion
stimulate milk ejection from the alveoli
Oxytocin
Milk ejection (release from glands)
stimulates the hypothalamus to
produce oxytocin
Nursing
Milk ejection (release from glands)
____ secreted from the posterior pituitary
Oxytocin
Milk ejection (release from glands)
_____ causes smooth muscles around alveoli to contract and squeeze milk into lactiferous
ducts, lactiferous sinuses and into the nipple
Oxytocin
Operated by positive feedback
Milk ejection (release from glands)
capsule of connective tissue deep to the germ epithelium
Tunica albuginea
has many layers of granulosa cells, secrete more estrogen
Mature oocytes
- Zona pellucida
- Corona radiata
- Vitelline membrane
- Ooplasm
- Germinal vesicle
- Germinal spots
Ovum structure
when _____ of ovarian follicles happens it enlarges, increase in layers, increase in anthrum
Maturation
Oogonia is more _____ in fetal life than adult because there is no hormonal stimulation
numerous
Spermatids and spermatozoans have haploid number of _______ because the 23 from sperms is added with the 23 from egg cells
chromosomes
Oogenesis is done in _____ unlike spermatogenesis
stages
Only 1 oocyte is produced by women per ____
month
During intercourse, only 1000 sperm passes vagina, only _____ to ____ reach the ovum
300 to 400
layer of myometrium that is being shed during menstruation, the fleshy one
Stratum functionalis