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Anatomy and Physiology of Uterus and Fallopian Tubes (UTERUS (is a hollow,…
Anatomy and Physiology of Uterus and Fallopian Tubes
UTERUS
is a hollow, thick-walled, pear-shaped organ-a duct, actually located in the pelvic cavity between the bladder and the rectum.
The fallopian tubes lead into the upper part of the uterus, one on either side
while the lower part of the uterus leads to the vagina
Ligaments hold the upper part of the uterus in suspension; the lower part is embedded in fibrous tissue.
FUNCTIONS
when an ovum (egg) is fertilized, it embeds itself into the uterine wall and is normally retained there as it develops
Development of an embryo and then a fetus causes the uterine wall to expand in size-enormously, actually.
After labor, the uterus shrinks down to almost its normal size
although its cavity is larger and the muscular layers are more defined (because it just pushed out a baby, like a boss).
CERVIX
cervix is actually the lowest part of the uterus, a constricted, somewhat conically shaped segment that leads to the vagina.
It is the passageway for menstrual flow, entering sperm, and childbirth.
It also secretes a clear alkaline mucus that changes character depending on where someone is in their menstrual cycle.
FALLOPIAN TUBES
fallopian tube, or oviduct, is about 10 cm long and consists of three coats: serous, muscular, and mucous.
Each fallopian tube consists of three portions: the isthmus (a constricted section connected to the uterus
The fallopian tubes are about four inches long and about as wide as a piece of spaghetti.
This fringed area, called the infundibulum, lies close to the ovary, but is not attached.
FUNCTIONS
carries an egg from the ovary to the uterus
is to transport sperm toward the egg, which is released by the ovary, and to then allow passage of the fertilized egg back to the uterus for implantation.