Day One Flashcards
1
Q
Testes function
A
80% spermatogenesis
20% testosterone production
2
Q
When do testicles descend?
A
7-9 months fetal life
3
Q
Dartos muscle
A
Wrinkles the balls
4
Q
Cremaster muscle
A
Lifts the balls
5
Q
Where are sperm stored before ejaculation?
A
Ampulla of the vas deferens
6
Q
What inhibits LH and GnRH production?
A
Testosterone
7
Q
What causes testis to drop into inguinal canal?
A
ANH
8
Q
What causes testes to drop out of inguinal canal?
A
Testosterone
9
Q
sertoli cells prevent?
A
autoimmune destruction of sperm
10
Q
where are sperm formed?
A
seminiferous tubules
11
Q
where do sperm mature?
A
epididymis
12
Q
what regulates conversion of spermatogonia to spermatocytes?
A
FSH
Sertoli cells
13
Q
what regulates final maturation of sperm?
A
LH and testosterone
14
Q
seminal vesicle
A
secretes nutrients for sperm
15
Q
average sperm per ejaculation
A
400 million
