L31

Question 1

where does the fertilized egg develop ?

Answer 1

in the uterus of the female

Question 2

what does the gonads produce ?

Answer 2

produce the sex hormones

Question 3

true or false

at birth human are sexually mature

Answer 3

false at birth human are sexually immature until puberty [سن البلوغ]

Question 4

what is the function of testes , which is a primary sex organ ?

Answer 4

produce sperms and sex hormones

Question 5

what is the function of Epididymis ?

Answer 5

Sites of maturation (ability to swim) and some storage of sperm.

Question 6

what is the function of urethra ?

Answer 6

conduct sperm and urine

Question 7

what is the function of vas deferens ?

Answer 7

conduct and store sperm

Question 8

what is the function of penis?

Answer 8

organ of copulation

Question 9

what is the function of suspended in scortum?

Answer 9

(important to regulate testicular temperature ]

Question 10

the testes Develop inside abdominal cavity but descend into scrotal sac during last 2 months of fetal development. and if it underscendent tests that cause sterlity

Answer 10

9;

Question 11

Seminiferous tubules consist of 2 type of cells ?

Answer 11

germinal cells to form sperm

sertoli cells that are required for the process of spermatogenesis bcz they provide nourish and have FSH receptor

Question 12

testes contain ?

Answer 12

seminiferous tubules [ germinal cells / sertoli cells ]

interstitial tissue

Question 13

intersitial tissue consist of ?

Answer 13

leydig cells ,which are located in the spaces between tubules have have LH [ luteinizing hormone] receptors ,which are testosterone

Question 14

steps of spermataogenesis?

Answer 14

spermatogonium 2n 
mitosis primary primary spermatocyte  2n 
meiosis 1 
secondary spermatocyte 1n 
meiosis 2 
early spermatocyte than late spermatid

Question 15

spermatogenesis start at ?

Answer 15

start at 13 yrs / 74 days to complete

Question 16

what is spermiogenesis ? يبدا من بعد الانقسام الميوزي

Answer 16

it is the last step of spermatogenesis يعتبر[ العملبة كلها ],which transform spermatids [ erly sperm ] to sperms [ late sperm ]

Question 17

mature sperm contain

Answer 17

Head: contains a nucleus covered by an acrosome (a specialized lysosome that stores enzymes to penetrate egg).
1. Middle piece: contains mitochondria wrapped around microtubules of the flagellum (mitochondria provide energy for movement).
2. Tail: contains microtubules as components of flagellum; its movements propels
sperm.

Question 18

what is the function of hyothalamus in sex hormone secretion ?

Answer 18

they give us GnRH which go to the anterior polturity ?

Question 19

what is the function of anterior pituitry ?

Answer 19

they give us FSH, in sertoli cells which give us Estrogen / androgen binding protain
and LH, in leydig cells which give us T and estrogen

Question 20

what happen if male has high level of T ?

Answer 20

HIGH level of T lead to inhibition of hybithalmus and anterior pilautry to decrese the n level of T if it exceded it’s limit

Question 21

high level of anabolic steriod injection شي صناعي يزيد العضلات lead to ?

Answer 21

IT CAUSE IFERTILITY

it affect the function of androgen binding protain and that lead to low level of T

Question 22

WHEN DO the sperm become more resistance to change in pH and temprature ?

Answer 22

in the epididymis ,bcz they become mature and gain motility [ the ability to move and swam ]

Question 23

what is semen ?

Answer 23

is a thick whitish fluid that contains sperm (5%) and glandular secretions.
16

Question 24

what is the function of seminal vesicles ?

Answer 24

60% of the semen; thick viscous fluid containing nutrients (fructose) for use by sperm. Contains prostaglandins that stimulate smooth muscle contraction
along male and female reproductive system.

Question 25

what is the function of prostata gland ?

Answer 25

30% of the semen; secretes alkaline secretion that increase motility of sperm. Prostatic hypertrophy and prostate cancer

Question 26

what is the function of bulborethral glands ?

Answer 26

Produce clear viscous secretion known as pre-ejaculate that clear the urethra from urine residues.