Male Pelvis

Question 1

four parts of male urethra

Answer 1

1. intramural (passes through wall of bladder)
2. prostatic (reproductive and urinary functions merge)
3. membranous (through deep space)
4. spongy (penile, through superficial space)

Question 2

Most common injuries during catheterization

Answer 2

1. membranous urethra (most common)

2. spongy (penile) urethra

Question 3

Blood supply to rectum

Answer 3

1. Superior rectal a. (primary)

2. Middle rectal a.

Question 4

external hemorrhoids

Answer 4

dilations of external rectal venous plexus

Question 5

internal hemorrhoids

Answer 5

dilations of internal rectal venous plexus (site of porto-caval anastomis, indicative increased portal tension)

Question 6

layers of scrotum

Answer 6

1. scrotal skin
2. superficial (dartos) fascia
3. external spermatic fascia (from EAO aponeurosis)
4. cremaster muscle (skeletal muscle, from IAO muscle, ilioinguinal n. (L1))
5. internal spermatic fascia (from transversalis fascia)
6. tunica vaginalis (parietal and visceral layers)
7. tunica albuginea

Question 7

hydrocele

Answer 7

excess fluid in tunica vaginalis, common in newborns

Question 8

hematocele

Answer 8

bleeding in tunica vaginalis

Question 9

spermatocele

Answer 9

type of epididymal cyst, caused by blockage in epididymus (will contain spermatozoa)

Question 10

structures in spermatic cord

Answer 10

1. vas deferens (largest)
2. pampiniform plexus (testicular v.)
3. testicular a. (within pampiniform plexus)

Question 11

ischiocavernosus (superficial space)

Answer 11

covers crus, maintains erection

inn: perineal br. of pudendal n.

Question 12

bulbospongiosus (superficial space)

Answer 12

covers bulb, maintains erection, contracts during ejaculation
inn. perineal br. of pudendal n.

Question 13

superficial transverse perineal muscle (superficial space)

Answer 13

extends from perineal body to ischial tuberosity

Question 14

external urethral sphincter (deep space)

Answer 14

urinary continence

Question 15

deep transverse perineal muscle

Answer 15

extends from perineal body to ischial tuberosity

Question 16

testes temperature regulation

Answer 16

1. dartos muscle
2. cremaster muscle
3. pampiniform venous plexus

Question 17

testicular varicocele

Answer 17

blockage of venous drainage