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Flashcards in sperm Deck (33)
1

which two hormones cause the development of the male internal genital tract?

testosterone and mullerian inhibiting factors

2

in males, the repro tract forms from which ducts?

wolffian, mullerian degenerate

3

in females? which degenerate?

mullerian, wolffian degenerate

4

mullerian inhibiting factor, male or female?

male

5

name of the visceral layer that covers the testes?

tunica vaginalis

6

name of the plexus involved in venous drainage of the testis?

pampiniform plexus

7

name of the muscle that lifts and descends the testes and is controlled by nervous reflexes?

dartos muscl

8

undescended testes term?

cryptorchodism (undescended testes in adulthood)

9

if it is unilateral, are they fertile?

usually

10

what is the sperm count like in undescended testes?

down

11

procedure that should be performed before 14 to minimise risk of cancer?

orchidoplexy

12

if undescended as an adult, consider orchidectomy, why?

risk of cancer increased 6x

13

what does the acrosome contain?

enzymes for penetrating the ovum

14

why many mitochondria in centriole

to power the tail

15

what do the sertolli cells secrete to carry cells to the epididymis?

seminiferous tubule fluid

16

androgen binding globulin?

released by sertolli cells to bind to testosterone and keep it high in the lumen. this is important for sperm production

17

what kind of molecules are LH and FSH?

glycoproteins

18

what does LH act on?

leydig cells to produce testosterone

19

fsh act on?

stroll cells, increased spermatogenesis

20

secretion of LH and FSH stimulated by?

GnRH (under negative feedback from testosterone)

21

inhibin and activn secreted by?

sertolli cells

22

inhibin and active feed back on?

FSH

23

sperm have chemoattraction to oocyte. where do they bind to on the egg?

zona pellucida

24

enzymes to break through come from?

acrosome

25

site for sperm maturation?

epididymis

26

bulbourethral glands function?

secrete mucous to act as a lubrincant

27

what is the function of the seminal vesicles?

produce semen into the ejaculatory debt, supply fructose, secrete prostaglandins (stimulate motility), secrete fibrinogen (clotting factor)

28

what do the clotting factors produced by the prostate gland do?

clot semen in the female

29

what kind of fluid does the prostate gland produce? what is its purpose?

alkali fluid to neutralise acidic environment in the vagina

30

what two corpus does blood engorge into in the penis?

corpus cavernosum

31

get contraction f the accessory glands and vas deferent so semen is expelled to urethra

point and shoot. contraction of smooth muscles of urethra and erectile tissues

32

where is semen produced?

seminal vesicles

33

what does it contain?

fructose, prostaglandins and fibrinogen