Reproductive Physiology

Question 0

Defined by presence of ovaries/testes

Answer 0

Gonadal sex

Question 1

Defined by sex chromosome

Answer 1

Genetic sex

Question 2

Defined by characteristics of internal genital tract & external genitalia

Answer 2

Phenotypic sex

Question 3

Secreted by Sertoli cells to cause atrophy of Mullerian ducts

Answer 3

Antimullerian hormone

Question 4

Secreted by Leydig cells for growth of Wolffian ducts

Answer 4

Testosterone

Question 5

Which substance is suspected to initiate puberty?

Answer 5

Melatonin

Question 6

What conditions may inhibit onset of puberty?

Answer 6

Stress, malnutrition

Question 7

What is the first event in male puberty?

Answer 7

Testicular enlargement

Question 8

What is the first event in female puberty?

Answer 8

Breast enlargement

Question 9

Which hormone causes adrenarche (pubic hair, axillary hair development) in females?

Answer 9

Adrenal androgens

Question 10

Seminiferous tubules

Answer 10

Sperm production

Question 11

Epididymis

Answer 11

Sperm maturation, motility

Question 12

Vas deferens

Answer 12

Sperm storage

Question 13

Seminal vesicle

Answer 13

Sperm nutrition (fructose, prostaglandins)

Question 14

Prostate gland

Answer 14

Semen alkalinity (spermine)

Question 15

Bulbourethral glands

Answer 15

Mucus

Question 16

Testes temperature

Answer 16

1-2 degree celcius cooler

Question 17

Responsible for testes temperature

Answer 17

Countercurrent exchange of the testicular vessels

Question 18

Duration of spermatogenesis

Answer 18

64 days

Question 19

Sperm production per day

Answer 19

128 million

Question 20

“Activation” of sperm in the female genital tract for 4-6 hrs

Answer 20

Capacitation

Question 21

What is the enzyme that convert androstenidione to testosterone?

Answer 21

17-B Hydroxysteroid dehydrogenase

Question 22

What is the enzyme that convert testosterone to androstenidione?

Answer 22

5a Reductase

Question 23

What is the 5a reductase inhibitor used for male pattern baldness & BPH?

Answer 23

Finasteride

Question 24

Cell which determines sex of baby

Answer 24

Sperm cell

Question 25

Part of the sperm cell that contains hyaluronidase, proteolytic enzymes

Answer 25

Acrosome

Question 26

Acrosome comes from which organelle?

Answer 26

Golgi apparatus

Question 27

Definition of low sperm count

Answer 27

<20 million sperms/mL

Question 28

Sequela of cryptorchidism

Answer 28

Infertility, testicular CA

Question 29

Loss of body hair, musculature, thick bones, decreased libido

Answer 29

Castration after puberty

Question 30

Vestigeal remnant of the 3rd eye; secretes melatonin which is involve in reproduction & sex drive

Answer 30

Pineal gland

Question 31

Produced by ovarian granulosa cell & inhibits FSH secretion from anterior pituitary

Answer 31

Inhibin

Question 32

Produced by ovarian granulosa cell & stimulates FSH secretion from anterior pituitary

Answer 32

Activin

Question 33

Average age of menarche

Answer 33

13 yo

Question 34

Average age menopause

Answer 34

45 yo

Question 35

Number of lifetime mature follicles

Answer 35

400 follicles

Question 36

Peak of sexual desire

Answer 36

Just before ovulation

Question 37

Helps in fertility

Answer 37

Female orgasms

Question 38

Fertilized ovum implanting on uterus

Answer 38

Blastocyst

Question 39

Sperm has ____ to fertilize the egg

Answer 39

1-5 days

Question 40

Egg has _______ to be fertilized

Answer 40

24 hrs

Question 41

Site of fertilization

Answer 41

Ampulla of the oviduct