Sperm

Question 1

What is responsible for male secretions? (3)

Answer 1

10% bulbourethral
30% prostate
60% seminal vesicles

Question 2

What is semen made of?

Answer 2

Fluid and sperm

Question 3

What is normal sperm count?
How much sperm expelled during orgasm?

Answer 3

50-120 million/ml
2-5ml

Question 4

Functions of secretions? (3)

Answer 4

Buffers – protect against acidic environment
Chemicals to increase motility – fructose
Prostaglandins – stimulate female peristaltic contractions

Question 5

Function mucous from bulbourethral gland?

Answer 5

Lubrication

Question 6

State route sperm? (8)

Answer 6

1) Seminiferous tubules
2) Epididymis
3) Vas deferens
4) Ejaculatory duct
Nothing
5) Urethra
6) Penile urethra

SEVEn UP

Question 7

What cells form blood testis barrier?

Answer 7

Sertoli cells

Question 8

What are 2 components of blood testis barrier?

Answer 8

Basal
Central

Question 9

Function of blood testis barrier?

Answer 9

1) Prevent movement of chemicals
2) Ensure proper conditions for dev and diff

Question 10

Outline process spermatogenesis?

Answer 10

Question 11

What type of junctions are present in seminiferous tubule?

Answer 11

Tight

Question 11

What type of junctions are present in seminiferous tubule?

Answer 11

Tight

Question 12

What is process from spermatid to spermatozoa called?

Answer 12

Spermiogenesis

Question 13

Where are sperm stored?

Answer 13

Epididymis

Question 14

How is sperm adapted? (3)

Answer 14

1) Head contains enzymes- penetrate wall ovum
2) Body mitochondria
3) Tail provides locomotion