human reproductive anatomy

Question 1

(d) penis

Answer 1

contains erectile tissue that ca fill with blood and cause an erection during sexual arousal

Question 2

(f) penis

Answer 2

to deliver sperms o the vagina

Question 3

(f) testes

Answer 3

make testosterone and produce sperm

Question 4

(f) scrotum

Answer 4

keeps sperm forming cells about 2 *c cooler which allows them to function normally

Question 5

(d) testicle

Answer 5

scrotum + testis

Question 6

how does scrotum work?

Answer 6

has special muscles in the wall of the scrotum, allowing it to contract and relax, moving the testicles close to the body for warmth and protection or farther away from the body

Question 7

external male reproductive structures include?

Answer 7

penis, testicles

Question 8

internal male reproductive structures include?

Answer 8

sperm duct (vas deferens), prostate gland, urethra

Question 9

(f) sperm duct

Answer 9

delivers immature sperms from the epididymis to urethra (where they become mature at the end of it) during ejaculation

Question 10

spermatogenesis

Answer 10

process of producing male gametes (sperms)

Question 11

(f) prostate gland

Answer 11

produces fluid hat nourishes the sperm and provides protection from the natural acidity of the vagina

Question 12

(d) prostate gland

Answer 12

a walnut size structure that is located below the urinary bladder in front of the rectum

Question 13

(f) urethra

Answer 13

conveys at different times both the sperm and urine out of the body through penis

Question 14

(d/f) ovaries

Answer 14

site of gamete production, located on either side of the uterus

Question 15

where are follicles found?

Answer 15

ovaries

Question 16

oogenesis

Answer 16

process of producing female gametes (eggs)

Question 17

fallopian tubes

Answer 17

site of fertilisation. released egg (from the ruptured follicle) enters the fallopian tube and gets swept towards the uterus by cilia. if released egg not fertilised, lining is shed during menstruation

Question 18

uterus

Answer 18

actual site of pregnancy. the uterus has a thick muscular wall lined with a blood-rich layer of tissue (endometrium). an embryo implants in the endometrium and grows there.

Question 19

cervix

Answer 19

the narrow neck at the bottom of the uterus is the cervix. the cervix opens up into the vagina, allowing the flow of menstrual blood into the vagina and directs the sperms into the uterus. when woman is not ovulating, the cervix is covered in thick mucus that serves as protective barrier

Question 20

sperm vs egg size

Answer 20

sperm: very small (abt 60 um in length) as small size aids motility and sperm only needs to deliver genetic material to the ovum
egg: large (120 um in diameter) as egg contains all the organelles necessary for the development of the embryo

Question 21

sperm vs egg numbers

Answer 21

sperm: 200-500 million per ejaculation as many sperms will not survive long enough to meet the ovum, hence a large quantity of sperm will increase the chance of fertilisation
egg: one egg is released each ovulation as egg is safely located inside the female reproductive system and body can optimally support the growth of one embryo at a time

Question 22

sperm vs egg movement

Answer 22

sperm: has a flagellum that enables the cell to swim as sperm needs to propel towards the egg
egg: relies on the cilia of fallopian tubes to sweep it towards the uterus / the egg only needs to wit for fertilisation to occur as it is gently swept towards the uterus