Male A&P

Question 1

Mesonephric (Wolffian) duct:​

Answer 1

Male-Under exposure of testosterone develops into the male genitalia

Question 2

Paramesonephric (Mullerian) duct

Answer 2

Male-regress due to mullerian inhibiting factor

Question 3

Urogenital Development

Answer 3

Urogenital ridge​: External genitalia​, Prostate​

Testosterone converts to Dihydrotestosterone (DHT)​, which drives the Prostate gland/urethra​

Urogenital tubercle​: Penis ​& Scrotum

Question 4

testes

Answer 4

Oval organ, main function is producing and storing sperm. Produces testosterone and other male hormones (androgens). Contain coiled tubes-seminiferous tubules.

Question 5

scrotum

Answer 5

Loose pouch-like sac that holds the testes. Ensures temp is sl. cooler than body temp

Question 6

seminal vescicles (vessels for fluid)

Answer 6

Secretes fluid into the sperm ducts->semen

Question 7

epididymis

(diddy my testicles)

Answer 7

coiled tube that connects to testicles - Sperm maturation/conc/storage

Question 8

prostate gland does what?

Answer 8

Secretes fluid that activates sperm. A mixture of this and fluid is called semen

Question 9

vas deferens

Answer 9

Carries sperm from testes to urethra

Question 10

urethra

Answer 10

Carries sperm from sperm ducts to outside of the body

Question 11

penis

Answer 11

The organ that deposits semen into the vagina

Question 12

Testicular descent - when does it occur?

Answer 12

Initiates-7th month of gestation​

In scrotum at birth

Question 13

Failure to descend

Answer 13

Cryptorchidism​ (crypt orchid-ism)

Unilateral​

Bilateral

Question 14

Location/Function

Answer 14

Outside of the body​

Temperature sensitive​

Site of sperm production​

Testosterone production

Question 15

Spermatogenesis - where does it take place?

(semi-genesis)

Answer 15

site of spermatogensis is the Seminiferous tubules​

​

Question 16

Sperm development

Answer 16

Spermatogenesis​

Mitosis->Meiosis I->Meiosis II​

~74 days ​

Spermiogenesis​

Spermatid->mature sperm​
then a head Head ​

the head is covered with an Acrosome, which an enzyme to allow for oocyte penetration​

Nucleus and genetic material​

Midpiece​ - where the mitochondria is = bEnergy​

Tail​

Movement of the sperm​

100 million+ reach maturity daily

Question 17

Sperm maturation occurs where?

Answer 17

epidydymis - site of sperm maturation, concentration, storage. it’s another barrier as well.

Question 18

Accessory Glands​

(Peanut butterS)

Answer 18

Seminal vesicle​

Prostate​

Bulbourethral

Question 19

Testosterone​

Answer 19

Important throughout male lifecycle​

Reproductive effects​

Secondary Sex characteristics​

Non-reproduction

Question 20

hormone cycle

Answer 20

hypothalymus secretes GnRH from anterior - then secretes FSH and LH - then FSH causes testes to develop sperm - and actives ledyig cells. testosterone regulates the whole system - it causes a negative feedback system telling gnRH to stop producing sperm. Inhibin also helps regulate.

Question 21

testerone causes what feedback system?

Answer 21

negative

Question 22

when you take testosterone

Answer 22

your fertility goes down

Question 23

penis

Answer 23

3 columns​

2->Corpora cavernosa​

dorsal-central artery/elastic & connective tissue​

Dilated arteries–>erection​

1-> Copus spongiosum​

Midventral-surrounds urethra​

Ejaculation​

Expulsion of

Question 24

Fertilization - how many sperm?

Answer 24

200-600 million sperm deposited in vagina at ejaculation​

Question 25

how long to make sperm?

Answer 25

74 days

Question 26

where is sperm produced and stored?

Answer 26

testes

Question 27

where does spermatogenisis occur? (spermatogenisis is S)

Answer 27

seminiferous tubules

Question 28

what sperm structure provides enzymes for penetrating the oocyte (egg)

Answer 28

acrysome

Question 29

which hormone from the pituatary facilitates spermatogenesis

Answer 29

FSH

Question 30

where does spermatogenesis takes place (sperm is created).

Answer 30

Within the seminiferous tubules

Question 31

leydeg cells

Answer 31

inside the seminiferous tubules - produce testosterone

Question 32

sertoli cells - where are they?

Answer 32

inside the seminiferous tubules - produce androgen binding protein

Question 33

if leydig and seretoli bind

Answer 33

they produce sperm

Question 34

epididymis

Answer 34

to store and mature sperm (on top of the testicle (it has a head, body, and tail)

Question 35

vas deferens connects to

Answer 35

epydidymis

Question 36

orchipexy

Answer 36

surgery to descend testicles - usually done by 4th month, as late as a year and a half

Question 37

cells involved in spermatogensis - Inside seminiferous tubules:​

Answer 37

Germ cells (spermatogonium)​ Sertoli cells​

Question 38

cells involved in spermatogensis -Outside tubules:​

Answer 38

Leydig cells-Testosterone is produced here

Question 39

vas deferens - and can indicate which disease carrier?

Answer 39

transport of sperm, distal (near prostate), stores sperm absent of the vas deferens can indicate (CBA`VD) - cystic fibrosis carrier

Question 40

vasectomy

Answer 40

cutting the vas deferens

Question 41

capacitation (don't capitate the sperm)

Answer 41

Capacitation ​- allows for sperm to penetrate egg ~200 million arrive in fallopian tube (site of fertilization)​

Question 42

zona reaction (zoning)

Answer 42

Sperm penetration-Zona reaction - this is when the egg hardens and other sperm can't get in after fertilization