KA 2: Hormonal Control of Reproduction

Question 1

Pituitary gland

Answer 1

Releases FSH, LH or ICSH in response to releaser hormone

Question 2

Hypothalamus

Answer 2

Releases Releaser hormone, which acts on the pituitary gland

Question 3

Triggers of puberty onset

Answer 3

Release of FSH, LH or ICSH from the pituitary gland

Question 4

Males: role of FSH

Answer 4

Promotes sperm production of testosterone

Question 5

Males: role of testosterone

Answer 5

Stimulates sperm production and activates the prostate gland and seminal vesicles

Question 6

Control of testosterone levels

Answer 6

Negative feedback control by FSH and ICSH

Question 7

Duration of the average menstrual cycle

Answer 7

28 days

Question 8

Consequence of LH secretion peaks

Answer 8

Triggers ovulation

Question 9

Control of follicular development is achieved by…

Answer 9

Negative feedback of the ovarian hormones on the pituitary gland and the secretion of FSH and LH

Question 10

Females: role of FSH

Answer 10

Stimulates the development of a follicle and production of oestrogen by the follicle

Question 11

Females: follicular phase

Answer 11

Development of follicle in the first half of the menstrual cycle

Question 12

Females: role of oestrogen

Answer 12

Proliferation of the endometrium preparing it for implantation. Affects consistency of cervical mucus

Question 13

Consequence of peak levels of oestrogen

Answer 13

Surge in LH secretion

Question 14

Literal phase

Answer 14

Follicle develops into a corpus luteum; progesterone secreted

Question 15

Role of progesterone

Answer 15

Promotes further development and vascularisation of the endometrium, preparing it for implantation if fertilisation occurs

Question 16

Consequence of lack of LH

Answer 16

Degeneration of the corpus luteum with a subsequent drop in progesterone levels leading to menstruation

Question 17

Hormone secreted by the corpus luteum

Answer 17

Progesterone

Question 18

If fertilisation occurs, the corpus luteum

Answer 18

Does not degenerate and continues to produce progesterone

Question 19

Males: role of ICSH

Answer 19

Stimulates the production of testosterone

Question 20

Day one of the cycle

Answer 20

First day of menstruation