Childbearing Anatomy Flashcards
What hormone influences woman’s monthly cycles?
estrogen
What part of the body protects the pelvic bone during intercourse?
mons pubis
What protects underlying structures and is rich in sebacious glands, lubricates?
labia majora
What is rich in blood and nerves that provide sexual enjoyment? Secretes smegma (odor sexually stimulating for men)?
clitoris
What lubricates vaginal vestibule facilitating intercourse?
paraurethral glands
What produces the clear thick alkaline pH that enhances viability and mobility of sperm?
Bartholin’s glands
What is the wedge shaped area between the vagina and anus called?
perineum
What are the target organs for estrogen?
ovaries, fallopian tubes and uterus
What shape is the uterus?
pear shaped
What is the normal position of the uterus? and what is it held in place by?
antiverted
ligaments
The uterus is divided into two parts. Name these parts.
corpus
isthmus
Which part of the uterus makes up the upper 2/3?
corpus
What is the corpus made mostly of?
smooth muscle (myometrium)
What part of the uterus makes the lower 1/3 and is the site of a c-section?
isthmus
What is the rounded top of the uterus called?
fundus
What are the 3 layers of the uterus called?
perimetrium
myometrium
endometrium
What is the outermost layer layer called and what is it composed of?
perimetrium
composed of peritoneum
What is the middle layer of the uterus called? how many parts is it made of?
myometrium
3 parts
Name 3 functions of the myometrium
- continuous with fallopian tubes, vagina and ligaments
- helps organs to present in unified reaction during ovulation and orgasm
- all layers act as a whole
What is the outer layer of the myometrium responsible for? what direction are the fibers?
has longitudinal muscles and causes cervical effacement, expels fetus during birth
What is the middle layer of the myometrium responsible for? what direction are the fibers?
surrounds large blood vessels and acts as a tourniquet to stop bleeding after birth, figure 8 pattern of fibers
What is the inner layer of the myometrium responsible for? what direction are the fibers?
acts as a sphincter at the at fallopian tubes and internal os of cervix and inhibits expulsion of uterine contents and stretches during dilation in labour, circular pattern of fibers.
Describe the endometrium?
inner layer of uterus and acts under influence of hormones, is a mucous membrane
What is the neck of the uterus? how long is it?
cervix
2.5 cm
What function does the cervix provide? What is the entrance of the cervix made up of?
provides protective entrance to the uterus
internal and external os
What function does the internal os provide?
- mucous secreting glands
- lubricates vagina
- bacteriostatic action
- alkaline environment at ovulation for sperm