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Flashcards in Reproductive Physiology Deck (42):
0

Defined by sex chromosome

Genetic sex

1

Defined by presence of ovaries/testes

Gonadal sex

2

Defined by characteristics of internal genital tract & external genitalia

Phenotypic sex

3

Secreted by Sertoli cells to cause atrophy of Mullerian ducts

Antimullerian hormone

4

Secreted by Leydig cells for growth of Wolffian ducts

Testosterone

5

Which substance is suspected to initiate puberty?

Melatonin

6

What conditions may inhibit onset of puberty?

Stress, malnutrition

7

What is the first event in male puberty?

Testicular enlargement

8

What is the first event in female puberty?

Breast enlargement

9

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

Adrenal androgens

10

Seminiferous tubules

Sperm production

11

Epididymis

Sperm maturation, motility

12

Vas deferens

Sperm storage

13

Seminal vesicle

Sperm nutrition (fructose, prostaglandins)

14

Prostate gland

Semen alkalinity (spermine)

15

Bulbourethral glands

Mucus

16

Testes temperature

1-2 degree celcius cooler

17

Responsible for testes temperature

Countercurrent exchange of the testicular vessels

18

Duration of spermatogenesis

64 days

19

Sperm production per day

128 million

20

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

Capacitation

21

What is the enzyme that convert androstenidione to testosterone?

17-B Hydroxysteroid dehydrogenase

22

What is the enzyme that convert testosterone to androstenidione?

5a Reductase

23

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

Finasteride

24

Cell which determines sex of baby

Sperm cell

25

Part of the sperm cell that contains hyaluronidase, proteolytic enzymes

Acrosome

26

Acrosome comes from which organelle?

Golgi apparatus

27

Definition of low sperm count

<20 million sperms/mL

28

Sequela of cryptorchidism

Infertility, testicular CA

29

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

Castration after puberty

30

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

Pineal gland

31

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

Inhibin

32

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

Activin

33

Average age of menarche

13 yo

34

Average age menopause

45 yo

35

Number of lifetime mature follicles

400 follicles

36

Peak of sexual desire

Just before ovulation

37

Helps in fertility

Female orgasms

38

Fertilized ovum implanting on uterus

Blastocyst

39

Sperm has ____ to fertilize the egg

1-5 days

40

Egg has _______ to be fertilized

24 hrs

41

Site of fertilization

Ampulla of the oviduct