Male reproductive

Question 1

Describe location and function of scrotum

Answer 1

hangs outside pelvic cavity and at root of penis, helps regulate temperature of testes

Question 2

state the specific function of the cremaster muscles

Answer 2

pulls testes closer to body when cold

Question 3

Define spermatogenesis

Answer 3

formation of sperm by meiosis

Question 4

State 3 functions of sustentacular (Sertoli cells)

Answer 4

1. supports and provides nutrients for 70 days whilst cells undergo meiosis and develop sperm
2. produce testicular fluid for transport of sperm
3. control release of sperm into somniferous tubules

Question 5

Describe the specific function of acrosome

Answer 5

cap like vesicle containing enzymes to penetrate the secondary oocyte for fertilisation

Question 6

Describe the specific function of the mitochondria

Answer 6

provide energy so that the tail can propel sperm through female reproductive system

Question 7

Define the specific function of the tail of the sperm cell

Answer 7

Propels the sperm

Question 8

Name the hormones involved in spermatogenesis beginning from the hypothalamus

Answer 8

GnRH
LH
Testosterone
FSH

Question 9

State 3 functions of testosterone

Answer 9

1. controls growth development, function and maintenance of sex organs
2. stimulates sperm maturation
3. stimulates development of male secondary sex characteristics during puberty

Question 10

State the location of the epididymis

Answer 10

curves around the posterior surface of the testes

Question 11

3 functions of the epididymis

Answer 11

1. site for sperm to mature an gain mobility over 14 days
2. stores sperm
3. propels sperm into ductus (vas) deferens

Question 12

State the function of the ductus (vas) deferens

Answer 12

Transports sperm from epididymis to urethra by peristalsis

can store sperm for several months

Question 13

name the structures located in the spermatic cord

Answer 13

testicular blood vessels 
autonomic nerves
lymphatic vessels
ductus vas deferens 
cremaster muscles

Question 14

Describe the location and state the function of seminal vesicles

Answer 14

pair of pouch like structure that add an alkaline viscous fluid into the sperm

Question 15

Describe the location and state the function of the ejaculatory ducts

Answer 15

leads to ejaculatory duct

eject sperm and seminal vesicle secretions into urethra just before ejaculation

Question 16

Describe the location and function of the prostate gland

Answer 16

encircles the urethra just before the urinary bladder

during ejaculation, smooth muscles contract squeezing glandular secretions into urethra via several ducts

Question 17

Describe the location of and function of the bulbourethral glands

Answer 17

pea sized glands that produce a thick alkaline mucus which drains into to the urethra lubricating during sexual excitement

Question 18

Describe the function of the urethra

Answer 18

carries urine out of the bladder, propelling semen along the length of the penis

Question 19

Why cant a male urinate during ejaculation

Answer 19

muscle sphincter at the base of urinary bladder closes

Question 20

2 age-related changes in older men

Answer 20

55 decreased testosterone levels therefore decreasing muscle strength, fewer viable sperm and a decreased sexual desire