Uterus

Question 1

uterus

Answer 1

pear-shaped, thick-walled, muscular organ within the pelvic cavity

Question 2

four uterus regions

Answer 2

• fundus: superior dome
• body: major part with thick walls
• isthmus: constricted segment between body and cervix
• cervix: narrow, inferior part projecting into vagina

Question 3

3 layers of uterine wall

Answer 3

• perimetrium: outermost
• myometrium: middle layer, most of wall, muscle
• endometrium: mucosa, deep
• basal layer: closest to myometrium, always intact
• functional layer: changes thickness during the uterine cycle and is shed as menses if fertilization and implantation don’t occur