Repro 4 Flashcards
Female reproduction occurs in what fashion
Cyclical
What is external genitalia collectively referred to as
Vulva or pudendum
External genitalia of female
Clitoris
Labium minus
Labium Majus
Urethral opening
Vagina
Hymen
Opening of uterus
Cervix
3 layers of uterus
Perimetrium, myometrium, Endometrium
Perimetrium
Thin outer connective tissue layer
Myometrium
A thick layer of smooth muscle
Endometrium
Inner layer that varies in size through cycle
What happens when sperm swim into uterus
Proceeds down fallopian tubes (20-25cm)
Fallopian tubes
Contain 2 layers of smooth muscle similar to intestines and lined with cilia to move eggs to uterus
Where does fertilization happen
Right outside ovary
What do fallopian tubes end in
Fimbrae- finger like projections
What do fimbrae ensure
Eggs released from ovary enters fallopian tube
Falllopian tube and fimbrae held close by connective tissue
What does ovary produces
Eggs (gametes) and hormones
What covers ovaries
Dense connective tissue layer
What is inner portion of ovaries
Stoma
Medulla(contains blood vessels and nerves) and thick outer cortex (contains developing gametes)
How many oogonia during fetal development
5-7 million
Large amount of mitosis
How many primordial follicles at birth
~500,000 primary oocytes
How many primordial follicles at puberty
~180,000
How often are primordial follicles are recruited
Each cycle (1~ year complete maturation before enter cycle)
Ovaries contain follicles
In different developmental states
As secondary follicle develops what forms to become tertiary
Antrum to become tertiary
How many tertiary “dominant” follicle fully develops
One
Why are so many primordial follicles lost from birth to puberty
Many undergo atresia
- hormone regulated cell death
What is on outside of primordial follicle
Pregranulosa cells