LEC 33: OVARIES, UTERUS, VAGINA
Cards (7)
- OvariesGonads situated on either side of the uterus within the pelvic cavity
- Ovaries
- Almond-shaped, 3-5cm
- Held in place by several ligaments
- Served by ovarian arteries branching from the aorta and reach the ovary through suspensory ligaments and the mesovarium
- Uterine tubes (Fallopian tubes/Oviducts)
- Narrow tube with fimbriae at the end
- Fimbriae creates a current to move ovulated oocyte from peritoneal cavity to uterine tube
- Uterus
- Hollow, thick-walled muscular organ situated in the pelvic cavity
- 3 layers: Serous perimetrium, Myometrium, Endometrium (Endometrium has stratum functionalis and stratum basalis)
- Vagina
- Passageway extending from cervix to the external genitalia
- 3 layers: Fibroelastic adventitia, Smooth muscle muscularis, Inner mucosa w/ rugae
- Mucosa produces glycogen-rich fluid
- Creates an acidic environment to protect against infection
- Vulva
- Mons pubis: Rounded adipose-rich area over the pubic symphysis
- Labia majora: Two elongated folds of skin extending from the mons pubis, homologous to the scrotum in males
- Labia minora: Two thin folds of skin enclosed by labia majora, encloses the vestibule
- Clitoris: Innervated erogenous zone of erectile tissue, includes glans, prepuse (hood), two corpora cavernosa
- Vestibular glands: Skene's glands (lesser vestibular glands or female prostate), Bartholin's glands (greater vestibular glands) (produces lubricating mucous)
- Vestibule: Space enclosed by the labia minora, contains vaginal and urethral openings
- Mammary glands
- Modified by apocrine sweat glands
- Present in both male and females, fully develop in females during pregnancy
- Lobules within lobes contains alveoli that produces milk during lactation
- Alveolar ducts empty into lactiferous ducts and then lactiferous sinuses when collecting milk
- Development is stimulated by estrogen
- Final maturation occurs by the fourth month of pregnancy
- Breast cancer originates from epithelial cells of the ducts