1000ft view Male Reproduction

Question 1

What is bulbospongiosus

Answer 1

around lateral aspect of the bulb of the penis and proximal body
-pudendal nerve innervation, supports pelvic floor, helps to expel all semen, pushes blood from bulb into body of penis

Question 2

what is ischiocavernosus

Answer 2

helps to maintain erection, compresses venous flow

Question 3

what are the three sections of the root

Answer 3

crus - laterally
bulb of corpus spongiosum - centrally
corpus spongiosum

Question 4

how is the body of the penis attached

Answer 4

via suspensory ligament

Question 5

what surrounds the corpous spongiosum and corpus cavernosum

Answer 5

Bucks fascia

Question 6

where are the dorsal arteries located

Answer 6

between corpora cavernosa, contains deep and superficial

Question 7

what arteries help with erection and where are they located

Answer 7

deep arteries within corpora cavernosa

Question 8

what is the innervation of the penis

Answer 8

branches off the pudendal nerve

Question 9

what branch off of the pudendal nerve provides somatic innervation to the spongy urethra

Answer 9

dorsal nerve branch

Question 10

What is the Raphe

Answer 10

line between the scrotum

Question 11

what are the muscles of the scrotum

Answer 11

cremaster muscles
dartos muscles
scrotal septum

Question 12

what is the vasculature of the scrotum

Answer 12

anterior scrotal arteries off the internal pudendal arteries

Question 13

what is the innervation of the scrotum

Answer 13

anterior scrotal nerve off the ilio-inguinal nerve and genital branch of the genitofemoral nerve

Question 14

what is included in the spermatocord

Answer 14

testicular blood vessels, connective tissue and vas deferens

Question 15

when do the tests descend

Answer 15

3 months before birth through the inguinal canal

Question 16

how are the tests suspended

Answer 16

spermatic cord

Question 17

what covers the testes

Answer 17

tunica vaginalis

Question 18

what is the inner covering of the testes

Answer 18

tunica albuginea

Question 19

what is the needed temp for the the testes

Answer 19

2-7 degrees Celcius below body temp for spermatogenesis

Question 20

where is sperm made within the testes

Answer 20

seminiferous tubules

Question 21

What are Leydig cells

Answer 21

stimulate sertoli cells
create testosterone when stimulated by LH
(more supportive cells) more external

Question 22

what are sertoli cells

Answer 22

stimulated by FSH which will make the androgen bonding protein
create spermatogonium (diploid cell) - more internal

Question 23

what is pampiniform plexus

Answer 23

venous vascular attachment

Question 24

what helps with the continued maturation of sperm

Answer 24

epididymis

Question 25

how long does it take for sperm to move along the epididymis

Answer 25

12 days

Question 26

in males what does the inguinal canal contain

Answer 26

spermatic cord gonadal vessels lymphatics

Question 27

what portion of the spermatozoa contains DNA

Answer 27

head of the spermatozoa

Question 28

what makes up the mid-piece of the spermatozoa

Answer 28

large amount of mitochondria

Question 29

what does acrosome assist with

Answer 29

break through the egg

Question 30

what is included in seminal fluid

Answer 30

fructose for sperm metabolism prostaglandins to help with the inhospitable vaginal environment alkalizes the fluid to protect from vagina

Question 31

how big should the prostate be

Answer 31

size of a walnut

Question 32

what regulate the function of the prostate

Answer 32

androgens

Question 33

what is the purpose of the prostate

Answer 33

alkalinizes semen further, gives milky appearance add fibrinolysis to increase sperm motility

Question 34

what is the PSA

Answer 34

prostate-specific antigen - prostate cancer specific marker

Question 35

what are the bulbourethral glands

Answer 35

secrete mucous near base of penis

Question 36

what is the pH of semen

Answer 36

7.5

Question 37

what it the amount during a normal ejaculation

Answer 37

2-6mL

Question 38

what controls erection

Answer 38

parasympathetic NS

Question 39

what is the innervation of the corpus cavernosa

Answer 39

pelvic nerve (S2-S4)

Question 40

what is detumescence

Answer 40

flaccid penis

Question 41

what allows for flaccid penis

Answer 41

increase sympathetic input

Question 42

what controls ejactulation

Answer 42

sympathetic NS innervation from T4-L2

Question 43

what causes constriction so there is no exchange between urine or semen

Answer 43

Norepinephrine

Question 44

what occurs after ejaculation

Answer 44

loss of parasympathetic reduced NO decreased compression on the veins flaccid penile tissue (remission)

Question 45

how long are the sex organs the same embryologically

Answer 45

first 5 weeks

Question 46

Where is the SRY gene located

Answer 46

on the Y chromosome

Question 47

what causes the Mullerian ducts to regress

Answer 47

activation of SRY gene - stops development of female sex organs

Question 48

what develops with activation of SRY gene

Answer 48

Wolffian duct