Male Reproductive Anatomy

Question 1

what is anatomical position in male anatomy

Answer 1

an erect penis tipped up to umbilicus, so underside of penis is ventral, and top side is dorsal

Question 2

what is the penile raphe

Answer 2

line along ventral side of penis

Question 3

what is the scrotal raphe

Answer 3

line along ventral side of scrotum

Question 4

what is the perineal raphe

Answer 4

line between scrotum and anus

Question 5

what structures are in the superficial space

Answer 5

1. ischiocavernosus
2. bulbospongiosus
3. superficial transverse perineal muscle
4. bulb of penis
5. crus of penis

Question 6

innervation of the superficial space

Answer 6

pudendal nerve (S2-S4)

Question 7

what anchors/roots of external genitalia?

Answer 7

perineal membrane

Question 8

what makes up the shaft/body of the penis?

Answer 8

the crura and bulb of the penis

Question 9

what is the crura of the penis

Answer 9

2 lines of corpora cavernosa

Question 10

what is the bulb of the penis

Answer 10

1. corpus spongiosum
2. glans penis
3. spongy urethra

Question 11

portions of male urethra

Answer 11

1. pre-prostatic
2. prostatic
3. membranous
4. spongy/penile

Question 12

what does the pre-prostatic region of the urethra contain

Answer 12

internal urethral sphincter

Question 13

function of internal urethral sphincter in the urethra

Answer 13

prevents retrograde flow of semen into bladder during ejaculation

Question 14

location of membranous urethra

Answer 14

deep space of UG diaphragm

Question 15

what does the membranous urethra contain

Answer 15

external urethral sphincter

Question 16

characteristic of the membranous urethra

Answer 16

narrowest part, goes through deep space and has external urethral sphincter

Question 17

what does the spongy urethra pass through?

Answer 17

superficial space and down the corpus spongiosum

Question 18

what is the pubovesical ligament

Answer 18

ligament that contains smooth muscle fibers, is continuous with the detrusor muscle and holds open vesical neck around the urethra

Question 19

what is the puboprostatic ligament

Answer 19

is a condensation of the superior fascia of the pelvic diaphragm with smooth muscle and connective tissue

Question 20

function and location of puboprostatic ligament

Answer 20

lateral to pubovesical ligament, functions for urethral support and urinary continence

Question 21

4 lobes of prostate gland

Answer 21

1. anterior
2. medial
3. lateral
4. posterior

Question 22

what lobe of prostate gland is palpable upon rectal exam

Answer 22

posterior lobe

Question 23

what lobe of prostate is the first affected with prostate cancer

Answer 23

posterior lobe

Question 24

what is the male homologue of the uterus and vagina?

Answer 24

prostatic utricle (pouch)

Question 25

what is the postatic utricle a remnant of?

Answer 25

paramesonephric duct

Question 26

what is the seminal colliculus

Answer 26

median elevation in the prostatic urethra

Question 27

what is the prostatic sinus

Answer 27

channels on either side of the seminal colliculus, prostate ejects prostatic fluid via prostatic ducts and ejaculatory ducts

Question 28

trace flow of semen through duct system

Answer 28

1. made in seminiferous tubules
2. travel through the straight tubules
3. through the rete testis of mediastinum testis
4. through efferent ductules
5. head of epididymis
6. body of epididymis
7. tail of epididymis
8. ductus deferens (vas deferens)
9. ejaculatory ducts
10. urethra
11. penis

Question 29

which are the accessory glands of the ejaculatory system

Answer 29

1. prostate gland
2. bulbourethral glands (cowpers)
3. seminal vesicles

Question 30

what does the prostate gland secrete

Answer 30

acidic prostatic fluid

Question 31

what does the bulbourethral gland secrete

Answer 31

alkaline mucus to lubricate the urethra and increase ejaculatory velocity

Question 32

where are the cowper’s glands?

Answer 32

deep space at UG diaphgragm

Question 33

what do the seminal vesicles secrete

Answer 33

fructose rich seminal fluid

Question 34

what is the main component of semen

Answer 34

seminal fluid makes up 60% of semen

Question 35

which are the accessory glands of the ejaculatory system

Answer 35

1. prostate gland
2. bulbourethral glands (cowpers)
3. seminal vesicles

Question 36

what does the prostate gland secrete

Answer 36

acidic prostatic fluid

Question 37

what does the bulbourethral gland secrete

Answer 37

alkaline mucus to lubricate the urethra and increase ejaculatory velocity

Question 38

where are the cowper’s glands?

Answer 38

deep space at UG diaphgragm

Question 39

what do the seminal vesicles secrete

Answer 39

fructose rich seminal fluid

Question 40

what is the main component of semen

Answer 40

seminal fluid makes up 60% of semen