Male Physiology

Question 1

What is the function of the sertoli cells?

Answer 1

Forms blood-testis barrier
Isolate haploid 2dary spermatocytes, spermatids, spermatozoa from the immune system
Physical movement of developing sperm towards lumen
Provision of nutrients to sperm
Removal of waste and excess cytoplasm

Question 2

What is the function of the counter-current health exchange?

Answer 2

Arterial blood is cooled by venous blood to maintain a constant testicular temperature

Question 3

What are the factor affecting spermatogenesis?

Answer 3

Testis temperature
Loss of blood testis barrier
Anabolic steroids
Reduction in gonadotrophin and androgens
Smoking, alcohol, radiation
Chemotherapy, antihypertensives, antidepressants

Question 4

What is the systemic effect of androgens?

Answer 4

Deepening voice
Male body hair
Increased sebaceous gland activity
Protein anabolism

Question 5

What are the typical LH levels in men?

Answer 5

1-8

Question 6

What are the typical FSH levels in men?

Answer 6

1-11

Question 7

What are the normal testosterone levels in men?

Answer 7

9-33nmol/L