sperm

Question 1

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

Answer 1

testosterone and mullerian inhibiting factors

Question 2

in males, the repro tract forms from which ducts?

Answer 2

wolffian, mullerian degenerate

Question 3

in females? which degenerate?

Answer 3

mullerian, wolffian degenerate

Question 4

mullerian inhibiting factor, male or female?

Answer 4

male

Question 5

name of the visceral layer that covers the testes?

Answer 5

tunica vaginalis

Question 6

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

Answer 6

pampiniform plexus

Question 7

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

Answer 7

dartos muscl

Question 8

undescended testes term?

Answer 8

cryptorchodism (undescended testes in adulthood)

Question 9

if it is unilateral, are they fertile?

Answer 9

usually

Question 10

what is the sperm count like in undescended testes?

Answer 10

down

Question 11

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

Answer 11

orchidoplexy

Question 12

if undescended as an adult, consider orchidectomy, why?

Answer 12

risk of cancer increased 6x

Question 13

what does the acrosome contain?

Answer 13

enzymes for penetrating the ovum

Question 14

why many mitochondria in centriole

Answer 14

to power the tail

Question 15

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

Answer 15

seminiferous tubule fluid

Question 16

androgen binding globulin?

Answer 16

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

Question 17

what kind of molecules are LH and FSH?

Answer 17

glycoproteins

Question 18

what does LH act on?

Answer 18

leydig cells to produce testosterone

Question 19

fsh act on?

Answer 19

stroll cells, increased spermatogenesis

Question 20

secretion of LH and FSH stimulated by?

Answer 20

GnRH (under negative feedback from testosterone)

Question 21

inhibin and activn secreted by?

Answer 21

sertolli cells

Question 22

inhibin and active feed back on?

Answer 22

FSH

Question 23

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

Answer 23

zona pellucida

Question 24

enzymes to break through come from?

Answer 24

acrosome

Question 25

site for sperm maturation?

Answer 25

epididymis

Question 26

bulbourethral glands function?

Answer 26

secrete mucous to act as a lubrincant

Question 27

what is the function of the seminal vesicles?

Answer 27

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

Question 28

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

Answer 28

clot semen in the female

Question 29

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

Answer 29

alkali fluid to neutralise acidic environment in the vagina

Question 30

what two corpus does blood engorge into in the penis?

Answer 30

corpus cavernosum

Question 31

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

Answer 31

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

Question 32

where is semen produced?

Answer 32

seminal vesicles

Question 33

what does it contain?

Answer 33

fructose, prostaglandins and fibrinogen