Hormones In The Male Reproductive System

Question 1

At puberty how many hormones are produced by the male pituitary gland?

Answer 1

Two

Question 2

What two hormones are produced by the male pituitary gland at puberty?

Answer 2

FSH (follicle stimulating hormone)

LH (Luteinising hormone)

Question 3

When is FSH and LH produced by the male pituitary gland?

Answer 3

At puberty

Question 4

What gland produces FSH and LH at puberty?

Answer 4

The pituitary gland

Question 5

What does FSH stand for?

Answer 5

Follicle stimulating hormone

Question 6

What does LH stand for?

Answer 6

Luteinising hormone

Question 7

What is the function of FSH in males?

Answer 7

It causes the diploid sperm-producing cells in the testes to divide by meiosis and produce haploid sperm

Question 8

What is the function of LH in males?

Answer 8

It stimulates the testes to produce testosterone

Question 9

What hormone causes the diploid sperm-producing cells in the testes to divide by meiosis and produce haploid sperm?

Answer 9

Follicle stimulating hormone (FSH)

Question 10

What hormone stimulates the testes to produce testosterone?

Answer 10

Luteinising hormone (LH)

Question 11

What are male hormones called?

Answer 11

Androgens

Question 12

What are androgens?

Answer 12

Male hormones

Question 13

What is the main androgen?

Answer 13

Testosterone

Question 14

When is testosterone produced by males?

Answer 14

It is produced in small amounts by the testes before puberty but its production increases enormously at puberty

Question 15

When does testosterone production in males increase enormously?

Answer 15

At puberty

Question 16

What produces testosterone in males?

Answer 16

The testes

Question 17

What produces testosterone in females?

Answer 17

The ovaries

Question 18

When is testosterone produced in females?

Answer 18

It is produced throughout life

Question 19

What amounts of testosterone is produced in females and pre-pubescent males?

Answer 19

Small amounts of testosteron

Question 20

What does testosterone cause in males early in life?

Answer 20

It causes the primary male characteristics

Question 21

What are the primary male characteristics?

2

Answer 21

The growth of the penis and other male reproductive parts

The descent of the testes into the scrotum

Question 22

What does testosterone bring about at puberty?

2

Answer 22

It brings about the enlargement of the penis, testes and other reproductive parts

It causes the secondary male characteristics

Question 23

What are secondary sexual characteristics?

Answer 23

Secondary sexual characteristics are those features that distinguish males from females, apart from the sex organs themselves

Question 24

List the secondary male characteristics.

6

Answer 24

Growth of pubic, underarm, facial and body hair

Enlargement of the larynx, causing the voice to break and deepen

Increased muscular and bone development

Widening of the shoulders

Growth spurt (body weight may double)

Increased secretion of sebum in the skin

Question 25

What causes the voice to break and deepen in males?

Answer 25

The enlargement of the larynx

Question 26

What does the enlargement of the larynx cause?

Answer 26

It causes the voice to break and deepen