Y2 Physiology

Question 1

Which two muscles contribute to penile erectile tissue?

Answer 1

Corpora cavernosum x2

Corpora spongeosum

Question 2

In which structure are spermatozoa formed?

Answer 2

Seminiferous tubules

Question 3

Which arteries supply the penil?

Answer 3

Dorsal and Deep

Question 4

Which vein contributes most to penile blood drainage?

Answer 4

Dorsal vein

Question 5

What secretes hCG?

Answer 5

Trophoblast cells

Question 6

What is the role of hCG?

Answer 6

Maintenance of the corpus luteum

Question 7

What is the role of the corpus luteum?

Answer 7

Maintenance of the endometrium (through progesterone)

Question 8

When in pregnancy do hCG levels decline?

Answer 8

~4 months when the placenta overtakes endocrine function

Question 9

Which cells produce testosterone in males?

Answer 9

Leydig cells

Question 10

Which hormone stimulates testosterone production in males?

Answer 10

LH

Question 11

Which hormone surges during ovulation?

Answer 11

LH

Question 12

What are the two layers of the endometrium?

Answer 12

Stratum functionalis (sheds)

Straum basalis

Question 13

The production of which two hormones is stimulated by GnRH?

Answer 13

LH

FSH

Question 14

From what artery are penile arteries tributaries of?

Answer 14

= internal pudendal artery (terminal branch)

+ scrotal artery

Question 15

Which nerve is responsible for penile ejaculation?

Answer 15

Pudendal nerve

(sympathetic)

Question 16

What is the function of FSH in men?

Answer 16

Stimulates testicular growth

Enhances the production of androgen-binding protein by Sertoli cells

Question 17

Sertoli Cells

Answer 17

Cells located between the testicular seminiferous tubules necessary for sustaining the maturing sperm cell.