W20 Reproduction

Question 1

Where in the testis does spermatogenesis occur?

Answer 1

Seminiferous tubules

Question 2

What is spermatogenesis? When does it occur?

Answer 2

Proliferation of a spermatogonium (stem cell) to spermatozoon (stem cell)
Occurs during puberty!

Question 3

Outline how spermatogenesis occurs

Answer 3

From one Spermatogonium: mitosis into Primary spermatocytes
Meiosis 1 into Secondary,
Meiosis 2 into 4x spermatids

Question 4

What is spermiogenesis?

Answer 4

When spermatids proliferate into spermatozoon

Question 5

What is the epidydmis?

Answer 5

Reservoir for sperm

Sperm undergoes further maturation

Question 6

What is the role of sertoli cells?

Answer 6

Produces enzymes + GH for spermatogenesis

Question 7

What is the function of Leydig cells?

Answer 7

Secrete testosterone in response to LH/FSH

when puberty starts

Question 8

Outline the steps of oocyte maturation

Answer 8

Oogonia -> Primary oocyte -> Primordial follice –> Puberty –> Primary foillicle (w/ primary oocyte) –> Secondary follicle –> Graafian follice (secondary oocyte)

Question 9

What is the roles of the hormone in maturation of ooginia?

Answer 9

FSH stimulates proliferation of follicular cells

Question 10

Summarise the menstrual cycle as 3 stages

Answer 10

Follicular phase, Day 1-14:
Ant. Pit. release FSH, follicles mature, estrogen is produced

Ovulation phase (Day 14)
Rise in estrogen causes pituitary to release LH = the LH surge, OVULATION occurs

Luteal phase:
Graafian follicle becomes corpus luteum, starts producing progesterone