Male Reproduction

Question 1

what are the involuntary and voluntary sphincters

Answer 1

internal urethral sphincter (closes during ejaculation so it doesn’t get into bladder)

external urethral sphincter – under control of somatic motor system (when we are in control of bladder

Question 2

what are the 2 muscles of importance in the scrotum

Answer 2

Cremaster: thermoregulatory and protection
Dartos: thermoregulatory (supriofical)

Question 3

what are the 2 facias

Answer 3

Tunica Vaginalis: most superficial and covers blood vessels and nerves.
Tunica Albuginea: Deeper, covers the testes.

Question 4

pathway of ejaculate

Answer 4

1. Produced in Somniferous tubule.
2. Passes through Rete testis.
3. Efferent ductulus
4. Stored in Epididymis
5. Prostate glands

Question 5

3 cylinders of erectile tissue

Answer 5

LATERAL: 2 corpora cavernosum - crus attached to pubic arch
MEDIAL: 1 corpora spongiosum - expands to form glans & transmits urine and ejaculate

Question 6

spermatic cord contents

Answer 6

Testicular artery
ductus deferens: long muscular tube runs from the epididymis into the pelvic cavity behind your bladder and connects to your urethra

Pampiniform plexus (testicular veins)

Question 7

bloody supply of penis

Answer 7

dorsal & deep arteries of penis

Question 8

venous drainage of penis

Answer 8

Dorsal vein of penis (sup and deep)

Question 9

2 ligaments of the penis

Answer 9

1. Fundiform Ligament : from pubic synthesis, more superifical
2. Suspensory ligament : from pubic synthesis

Question 10

Perineal muscles of penis

Answer 10

1. ischiocavernosus mm.
2. bulbospongiosus mm.
3. superficial & deep transversus perineal mm

Question 11

function of ischiocavernosus mm.

Answer 11

, helps maintain & stabilize erection.

Question 12

function of the bulbospongiosus mm.

Answer 12

helps empty urethra after urination, compress erectile tissue, contraction during ejaculation helps expel semen.