The male reproductive system - external reproductive structures - ch 15

Question 1

How many reproductive EXTERNAL structures are there?

Answer 1

4 (four)

Question 2

Name 4 EXTERNAL structures of the male reproductive system?

Answer 2

1. Penis
2. Testicles
3. Scrotum
4. Epididymis

Question 3

How many parts to a penis?

Answer 3

3 (three)

Question 4

Name 3 parts to a penis?

Answer 4

1. the root
2. the shaft
3. glans penis

Question 5

What is the root of the penis connected to?

Answer 5

the abdominal wall

Question 6

Describe the foreskin of a penis?, and what it covers

Answer 6

It is a loose layer of skin covering the glans penis

Question 7

The penis has a tube that transports semen and urine, what is the name of the tube?

Answer 7

urethra

Question 8

Does the penis have many sensitive nerve endings?

Answer 8

yes

Question 9

Describe the body of the penis?

Answer 9

shaped like a cylinder, with 3 internal chambers made up of spongy erectile tissue

Question 10

What is the role of this spongy erectile tissue?

Answer 10

The spongy erectile tissue contains thousands of large spaces that fill with blood when a male is sexually aroused. As the penis fills with blood it becomes rigid and erect, which allows penetration to occur during sexual intercourse.

Question 11

Why is the skin on a penis loose and elastic?

Answer 11

to allow it to change size during an erection

Question 12

Describe what the Testicles are shaped?

Answer 12

two oval-shaped organs

Question 13

Where do you find the testicles?

Answer 13

behind the penis in an external sac called the scrotum

Question 14

Name the process where sperm is produced in the testes?

Answer 14

spermatogenesis

Question 15

Name the male hormone produced by the testes

Answer 15

testosterone

Question 16

What is testosterone responsible for?

Answer 16

the development of the typical male characteristics

Question 17

The anterior pituitary gland in the brain releases gonadotrophins which affect the testes, name the two types of gonadotrophins?

Answer 17

1. luteinising hormone (LH)

2. follicle-stimulating hormone (FSH)

Question 18

Describe the roles of the luteinising hormone (LH) and the role of the follicle-stimulating hormone (FSH)?

Answer 18

1. Luteinising hormone causes the release of testosterone from the testes
2. follicle-stimulating hormone maintains spermatogenesis

Question 19

Describe what the scrotum consists of?

Answer 19

a sac of skin and muscle divided by a septum in which the two testes are contained.

Question 20

What is the role of the scrotum?

Answer 20

The testes hang outside the body and by the action of loosening and tightening the scrotal muscle which moves the testes closer to or away from the abdomen the testes are kept at a slightly cooler temperature to the rest of the body, thus maintaining the viability of the sperm.

Question 21

Describe the epididymis?

Answer 21

There are two epididymides (singular: epididymis) in the male, formed of a series of small coiled tubes located at the back of the testes.

Question 22

What is the role of the epididymides?

Answer 22

to collect and store sperm prior to the seminal fluid being ejaculated via the ductus deferens