28-Male Reproductive

Question 0

Sac, long tube

Answer 0

Scrotum

Vas/Ductus Deferens

Question 1

Sac, 2 sacs divided by - 2, long tube, urethra goes through, arteries/ducts/muscle holding testis

Answer 1

Scrotum
Vas/Ductus Deferens
Corpus Spongiosum
Scrotal Septum internal, raphe external
Spermatic cord

Question 2

Muscles around testes - 2

Answer 2

Dartos - around scrotum, wrinkles

Cremaster - reflex, spermatic cord and penis

Question 3

Tissues surrounding testes - 2

Answer 3

Tunica vaginalis

Tunica Albuginea - white, divides testis into lobules

Question 4

Sperm making called, and where, 3 cell types

Answer 4

Spermatogenesis
Seminiferous tubule
Sertoli - support spermatogenesis
Spermatogenic - become sperm cells
Leydig / interstitial - secrete testosterone

Question 5

Spermatogenesis - 4 stages

Answer 5

Spermatogonia (2n) -> Primary spermatocytes (2n) -> Secondary spermatocytes (n) -> spermatids (n) mature into sperm

Question 6

Sperm parts - 5

Answer 6

Acrosome cap - penetrate oocyte
Head/nucleus - carry genetic material, chromosomes
Middle piece - contains mitochondria
Principle piece of tail - longest part
Secondary tail - whip like, propels

Question 7

Hormones - 5

Answer 7

Testosterone - produced by Leydig
DHT - converted testosterone made in prostate
Luteinizing Hormone (LH) - stimulates Leydig to produce testosterone
Follicle Stimulating Hormone (FSH) - acts with testosterone to promote spermatogenesis
Inhibin - from Sertoli, inhibits FSH to slow spermatogenesis

Question 8

Sperm maturation where, how moves through

Answer 8

Epididymus
Sperm pushed through by fluid, pressure by Sertoli cells
Stereocilia

Question 9

Ductus Deferens - through what, terminal end called

Answer 9

Spermatic cord

Ampula

Question 10

Ejaculatory duct - made of 2, ends where

Answer 10

Vas Deferens and Seminal Vesicle

Ends in prostatic urethra

Question 11

Sections of male urethra - 3

Answer 11

Prostatic urethra
Membranous urethra
Spongy urethra

Question 12

Accessory glands - 3, number of each, fluid produced, percentage of semen volume

Answer 12

Seminal vesicles - 2, alkaline fluid, fructose, clotting proteins, 60%
Prostate - 1, citric acid, proteolytic enzymes, 25%
Bulbourethral - 2, alkaline fluid, 15%

Question 13

Semen - mix, pH, coagulation

Answer 13

Mix of seminal fluid and sperm
Alkaline - 7.2-7.7, protect sperm from acid urine, vagina
Coagulates within 5 minutes - clotting proteins, 10 more minutes re-liquifies - proteolytic enzymes

Question 14

Penis - 5 parts

Answer 14

Corpus Spongiosum
Corpus Cavernosa (L and R)
Glans penis
Prepuce - foreskin

Question 15

Erection - 1, Ejaculation - 3

Answer 15

Erection - arteriolar pressure on penile veins
Ejaculation - sympathetic reflex from lumbar spinal
- Before - peristaltic action of smooth muscle pushes semen into spongy urethra
- During - smooth muscle at base of bladder closes