The Reproductive System

Question 1

Function of gonads

Answer 1

produce gametes and hormones

Question 2

Testes produce

Answer 2

sperm and androgens

Question 3

Ovaries produce

Answer 3

immature ovum/ oocytes

Question 4

Structures of male system

Answer 4

spermatic cords, penis, scrotum, testes, epididymus, ductus deferens, urethra

Question 5

Glands of male system

Answer 5

Prostate, seminal, bulbourethral

Question 6

What is spermatogenesis

Answer 6

production of sperm in testes

Question 7

how long does spermatogenesis take?

Answer 7

64 days

Question 8

3 steps of s.gen

Answer 8

1. mitosis
2. meiosis 1
3. spermogenesis

Question 9

Where does mitosis take place?

Answer 9

outer layer tubules

Question 10

S.gen Step 1

Answer 10

spermatogonia in seminiferous tubules undergo cell div. some differentiate into primary spermatocytes

Question 11

what are spermatogonia

Answer 11

stem cells

Question 12

s.gen step 2

Answer 12

primary spermatocytes undergo meiotic div producing secondary spermatocytes, then second div into 4 spermatids

Question 13

Spermatid

Answer 13

undifferentiated male gamete

Question 14

s.gen step 3 takes place

Answer 14

lumen

Question 15

s.gen step 3

Answer 15

spermatids differentiate into physically mature spermatozoa

Question 16

spermatids remain connected by what structure and why

Answer 16

cytoplasm bridges, cytokinesis not completed in m1 or m2. broken in last stage of maturation.

Question 17

spermiation

Answer 17

sperm loses attachment to nurse cell and enters lumen of seminiferous tubule

Question 18

Nurse cell functions

Answer 18

maintain blood-testis barrier
Regulate transport in and out of tubules
Support meiosis and mitosis
support spermiogenesis
secrete inhibin
secrete androgen-binding protein

Question 19

epididymus sperm is mature but

Answer 19

immobile

Question 20

first capacitation of sperm

Answer 20

mix with seminal secretions, flagella moving

Question 21

second capacitation of sperm

Answer 21

within conditions of female reproductive tract

Question 22

epididymus secretion function

Answer 22

prevents premature capacitation

Question 23

sperm anatomy

Answer 23

head- cont chromosomes
neck- cont mitochondria
Tail- flagellum

Question 24

what characterises sperm as a mobile carrier for chromosomes

Answer 24

lack of organelles besides nucleus and mito

Question 25

sperm absorb nutrients from surrounding fluid

Answer 25

lack glycogen