[ANAT] URETHRA

Question 1

male urethra length

Answer 1

18-20cm

Question 2

male urethra dual function

Answer 2

transport semen & urine

Question 3

female urethra length

Answer 3

4cm

Question 4

parts of male urethra

Answer 4

pre-prostatic
prostatic
membranous/perineal
penile

Question 5

widest most dilatable part

Answer 5

prostatic

Question 6

narrowest part least dilatable

Answer 6

external urethral orifice»membranous urethra

Question 7

pre-prostatic urethra length

Answer 7

1-1.5 cm

Question 8

prostatic urethra length

Answer 8

3-4cm

Question 9

membranous urethra length

Answer 9

2cm

Question 10

penile urethra length

Answer 10

15cm

Question 11

pre-prostatic urethra extends from

Answer 11

neck of bladder–>base of prostate

Question 12

pre-prostatic urethra is surrounded by

Answer 12

internal urethral sphincter

Question 13

contraction of pre-prostatic sphincter fucntion

Answer 13

prevents retrograde flow of semen into bladder

Question 14

prostatic urethra emerges from

Answer 14

prostate anterosuperior to its apex

Question 15

features of prostatic wall of prostatic urethra (4)

Answer 15

1-urethral crest
2-seminal colliculus
3-prostatic sinus
4-prostatic utricle

Question 16

midline longitudinal ridge in prostatic urethra

Answer 16

urethral crest

Question 17

depression on each side of urethral crest

Answer 17

prostatic sinus

Question 18

elevation at middle of urethral crest

Answer 18

seminal colliculus

Question 19

blind sac b/w ejaculatory ducts

Answer 19

prostatic utricle

Question 20

fused lower ends of paramesonephric ducts

Answer 20

prostatic utricle

Question 21

prostatic sinus receives

Answer 21

prostatic glands ducts

Question 22

seminal colliculus receives

Answer 22

2 ejaculatory ducts

Question 23

membranous part extends from

Answer 23

lower end of prostate—>bulb of penis

Question 24

membranous urethra traverses

Answer 24

deep perineal pouch & membrane

Question 25

membranous urethra is surrounded by

Answer 25

1-external urethral sphincter
2-bulbourethral glands

Question 26

surrounded by non striated smooth muscle fibers

Answer 26

pre-prostatic urethra

Question 27

surrounded by skeletal muscle fibers

Answer 27

membranous urethra

Question 28

penile urethra is embedded in

Answer 28

corpus spongiosum

Question 29

penile urethra extends from

Answer 29

end of membranous urethra—>external urethral orifice (glans penis)

Question 30

penile urethra dilatations

Answer 30

@ its beginning= intrabulbar fossa
its end=navicular fossa

Question 31

arterial supply of male urethra

Answer 31

inferior vesical a
middle rectal a
penile br of internal pudendal a

Question 32

venous drainage of male urethra

Answer 32

proximal–> prostatic venous plexus
remaining pt—>deep dorsal vein

Question 33

deep dorsal vein drains into

Answer 33

prostatic venous plexus

Question 34

Lymphatic drainage of male urethra

Answer 34

prostatic & membranous—> internal iliac LNs
spongy—>deep inguinal & superficial inguinal

Question 35

female urethra diameter

Answer 35

6mm

Question 36

female urethra course

Answer 36

bladder neck (internal urethral orifice)—>deep perineal pouch & membrane—>external urethral orifice anterior to vaginal opening

Question 37

female urethra is embedded in

Answer 37

ant wall of vagina

Question 38

female urethra runs______to symphysis pubis

Answer 38

antero-inferiorly

Question 39

lower ends of female urethra surrounded by____on each side

Answer 39

mucous glands

Question 40

urethral glands are homologous to

Answer 40

prostate

Question 41

female urethra lymphatic drainage

Answer 41

internal iliac LNs