Female reproductive system Flashcards
Transport 2 oocyte to uterus
Uterine Tubes
produce oocytes and hormones
Overies
Site of implantation of fertilized ovum, development of fetus and labour
Uterus
receives penis, passageway for birth
Vagina
synthesize, secrete and eject milk to nourish new born
Mammary Glands
Overies
paired glands resemble unshelled almonds in size and shape
Homologus to the testes
Ovaries function
- produce gametes secondary oocytes that develop into mature ova (eggs), a process called “oogenesis”
- Produce hormones include progesterone and estrogens (female sex hormones) inhibin and relaxin
Each ovary consists of
germinal epithelium Tunica albugenia - dense irregular connected tissue Ovarian cortex - dense irregular CT consists of stromal cells consists of ovarian follicles Ovarian medulla - Ovarian follicles Mature (Graafian) follicle Corpus luteum (yellow body) Corpus albicans
Tunica albugenia
dense irregular Connected tissue
Ovarian cortex
dense irregular connected tissue consists of stromal cells consists of ovarian follicles
Ovarian medulla
deep to cortex/contains blood vessels, lymphatics, nerves
Ovarian follicles
consist of oocytes with surrounding cells (1 layer) called follicular cell, later called “granulosa cells” (several days)
Mature (graafian) follicle
Large fluid filled follicle ready to rupture and release 2 oocyte - called ovulation
Corpus luteum (yellow body)
contains remnants of mature follicle, produces progesterone, estrogen relaxin and inhibin until it becomes scar tissue called corpus albicans
Corpus albiacans
fibrous scar tissue
Germinal epithelium
covers the surface of the ovary. It is followed by the tunica albuginea, ovarian cortex contains ovarian follicles
suspends uterus to ovaries from side wall of pelvis by the mesovarius
broad ligament
anchors ovaries to uterus
ovarian ligament
attaches ovaries to pelvic wall
suspensory ligament
entrance/exit for blood vessels and nerves
hilum
Attaches ovaries to inguinal canal
Round ligament
4 parts of Uterine tubes
- Infundibulum - funnel shaped portion close to ovary
- Ampulla - lateral 2/3
- Isthmus - more medial, short narrow thick walled that joins uterus
- Fimbriae - finger-like projections
Uterine Tube function
- Fimbriae sweep oocyte into tube
- Cilia and peristalsis move it along
- sperm reaches oocyte in ampulla
- fertilization occurs within 24 hours after ovulation
- zygote reaches uterus about 7 days after ovulation
Histology of Uterine tube
Mucosa = ciliated columnar epithelium with secretory cells provide nutrients Muscularis = circular and longitudinal smooth muscle - peristalsis helps move ovum down to the uterus Serosa= outer serous membrane
Uterus function
an organ the size and shape of an inverted pear tha functions in the transport of spermatozoa, menstruation, implantation of a fertilized ovum, development of a fetus during pregnancy, and labor
3 inches long by 2 in wide and 1 in thick
Anatomical subdivisions of uterus
fundus
body
cervix
Contains uterine cavity accessed by cervical canal (internal and external os)
what are cervical Mucus made of
A mixture of water, glycoproteins, lipids, enzymes, and inorganic salts produced by secretory cells of the cervix
Helps with Capacitation: causes sperm cell tail to beat more vigorously
What happens Cervical mucus is more think or thin
When thin, is more receptive to sperm
When thick, forms a cervical plug that physically impedes sperm penetration
Mucus supplements the energy needs of sperm
normal projection of uterus over the bladder
Anteflexion
Posterior tilting of the uterus
Retroflexion
Downward displacement of the uterus
Uterine Prolapse
It has many causes and may be characterized as first degree (mild), second degree (marked), and third degree (complete). treat depens on the degree of prolapse
Surgical removal of the uterus
Hysterectomy most common gynecological procedure
Indication for Hysterectomy
Endometriosis (the growth of endometrial tissue outside the uterus the tissue enters the pelvic cavity via the open uterine tubes and may be found in any of several sites on ovaries, etc) Ovarian cysts Excessive bleeding Cancer of cervix, uterus or ovaries Complete hysterectomy removes cervix
Degree of Hysterectomy
- Partial: body of uterus removed, cervix left in place
- Complete: body and cervix removed
- Radical: body, cervix, uterine tubes, possibly ovaries, superior vagina, pelvic lymph nodes, supporting structures (ligaments)
Blood supply to Uterus
Uterine arteries branch as arcuate arteries and radial arteries that supply the myometrium
Straight and spiral branches penetrate to the endometrium
What spiral arteries supply
Stratum functionalis
Their constriction due to hormonal changes starts menstrual cycle
Vagina function
As a passage way for sperm and menstrual flow, the receptable of the penis during sexual intercourse and the lower portion of the birth canal
4 inch long tubular, fibromuscular organ lined with muscous membrane that ending at cervix
Situated between urinary bladder and rectum
Vagina histology
The mucosa of vagina is continuous with that of the uterus and lies in a series of transverse folds called rugae
Mucosa dendritic cells are Antigen presenting cells that participate in the transmission of viruses (such as HIV) to a female during intercourse with an infected male.
The mucosa contains large stores of glycogen which decompose into organic acids which set up a hostile acid environment for sperm
What does Mucosa of vagina contain?
large stores of glycogen - decompose to acids to kill sperm
Structures of Vagina
Fornix recess that surrounds the vaginal Attachment to the cervix, where contraceptive diaphragm sits
Mucosa continuous with that of uterus
Mucosal tissue lies in a series folds called rugae
External genitilia of female
Vulva, aka Pundenum
Structure of Vulva
- Mons pubis
- Labia Majora
- Labia minora
- Clitoris
- vestibule
- vaginal orifice
- ext. urethral orifice
- paraurethral gland
- greater vestibular glands
- Bulb of the vestibule
Fatty pad over the pubic symphysis
Mons pubis
Folds of skin encircling vestibule where find urethral and vaginal openings
Labia majora and minora
Small mass of erectile tissue
Clitoris
Masses of erectile tissue just deep to the labia on either side of the vaginal orifice
Bulb of vestibule
Labia majora is homologous to
scrotum
Labia minora homologous to
spongy urethra
Vestibule homologous to
Membranous urethra
Praurethral gland homologous to
Prostate
Greater vestibular glands homologous to
bulbourethral glands
Bulb of the vestibule homologous to
corpus spongiosum and bulb of the penis in males
Diamond shaped area between the thighs in both sexes
Perineum
Perineum two triangles
Urogenital triangle and anal triangle
Contains external genitals and the anus
Boundaries of Perineum
Anti pubis symphysis, posterior coccyx, lateral ischial tuberosity
During child delivery, perineal cut made with surgical scissors
Episiotomy
Modified sudoriferous glands contained within each breast that produce milk
Mammary glands
What kind of glands mamary glands have?
Modified sudoriferous glands
How many lobes do mammary glands have>
15-20 lobes separated by adipose tissue
Each lobe has smaller compartnments called lobules composed of grape like clusters of milk-secreting glands called alveoli
grape like clusters of milk secreting glands
alveoli
the synthesis, secretion and ejection of milk
lactation
Structures of Mammary Glands
Myoepithelial cells Secondary tubules Mammary ducts Lactiferous sinuses areola alveoli Suspensory ligaments
pigmented area around nipple
areola
Milk secreting cells found in clusters within lobules
Alveoli
surround alveoli and promote milk expression
Myoepithelial cells
Connect alveoli to the nipple
Mammary ducts
an expansion of the mammary duct that accumulates milk and the base of the nipple
Lactiferous sinuses
Suspend breast from deep fascia of pectoral muscles (aging & cooper’s droop)
Suspensory ligaments
most common cause of breast lump
Fibrocystic disease
one or more cysts (fluid-filled sacs)
Thickening of alveoli (clusters of milk-secreting cells develop)
Cause of Fibrocystic disease
hormonal imbalance
Excess of estrogen or deficiency of progesterone in the postovullatory phase
Result is lumpy, swollen and tender breast a week before menstruation begins
Surgical procedure to increase breast size and shape
Breast Augmentation
filled with saline or silicone gel
Implant under breast tissue or pec major muscle
A surgical procedure that removes fat, skin and glandular tissue to reduce breast size
Breast reduction
Which age group most common with fibrocystic diseases
30-50