Male Anatomy

Question 1

Define the inguinal canal

Answer 1

Oblique passageway through the muscles of the anterior abdominal wall

Question 2

Where does the inguinal canal lie

Answer 2

Superior to the medial half of the inguinal canal

Question 3

What does each half of the scrotum contain

Answer 3

Testis
Epididymis
Lower part of the spermatic cord

Question 4

What is beneath the skin on the scrotum

Answer 4

Thin layer of superficial fascia
Thin, involuntary muscle (dartos)

Question 5

What is the thin, involuntary muscle underneath the scrotal skin called

Answer 5

Dartos

Question 6

What forms the septum which divides the scrotum into right and left halves

Answer 6

Superficial fascia

Question 7

What are the testes covered by

Answer 7

Three layers of spermatic fascia

Partially surrounded by tunica vaginalis

Question 8

What is the tunica vaginalis

Answer 8

Sac derived from the peritoneum

Question 9

What is the epididymis

Answer 9

Coiled tube lying along the posterior border of each testis

Question 10

What is the shape of the epididymis

Answer 10

Expanded head superiorly

Body and pointed tail lying at the lower pole of the testis

Question 11

Where are spermatozoa formed

Answer 11

Testis

Question 12

Where are spermatozoa stored

Answer 12

Epididymis

Question 13

What is the role of the vas deferens

Answer 13

Carries sperm from the epididymis

Question 14

Where does the vas deferens travel

Answer 14

Travels with the testicular vessels in the spermatic cord

Question 15

What are testicular arteries branches of

Answer 15

Abdominal aorta

Question 16

Where does venous blood from the testis and epididymis enter

Answer 16

Pampiniform venous plexus

Question 17

What does the pampiniform venous plexus form

Answer 17

Testicular vein

Question 18

Where does the right testicular vein enter

Answer 18

Inferior vena cava

Question 19

Where does the left testicular vein join

Answer 19

Left renal vein

Question 20

What is the penis primarily made up of and where

Answer 20

Three cylinders of erectile tissue

Two ‘corpora cavernosa’ dorsally (along the ‘top’ of the penis)

One ‘corpus spongiosum’ ventrally (along the ‘bottom’ of the penis)

Question 21

What encloses the corpora cavernosa and corpus spongiosum

Answer 21

Within the deep fascia of the penis - Buck’s fascia

Question 22

What is the end of the penis called and what is it an expansion of

Answer 22

End = glans penis

Expansion = Corpus spongiosum

Question 23

What does the penile urethra carry

Answer 23

Urine and semen

Question 24

What does the penile urethra lie within

Answer 24

Corpus spongiosum

Question 25

What does the urethra open via

Answer 25

External urethral meatus

Question 26

What is the arterial supply of the penis

Answer 26

Penile arteries

Question 27

What are the penile arteries a branch of

Answer 27

Internal pudendal arteries (which are branches of the internal iliac arteries)

Question 28

What is the nerve supply to the penis

Answer 28

S2-S4 nerves General sensation and sympathetic innervation carried by dorsal nerve of penis (branch of pudendal nerve) Parasympathetic nerves arise from the peri-prostatic nerve plexus

Question 29

What are parasympathetic fibres in the penis responsible for

Answer 29

Causing erection by dilating the arteries of the corpora

Question 30

What is the corpora cavernosa primarily responsible for

Answer 30

Increase in size and rigidity of the penis during erection Become engorged with blood

Question 31

What is the main role of the corpus spongiosum

Answer 31

During an erection stopping the urethra from being compressed

Question 32

Define erectile dysfunction

Answer 32

Inability to achieve or maintain an erection during sexual activity

Question 33

What are the possible reasons for erectile dysfunction

Answer 33

Nerve pathways and reflexes Controlled blood flow in and out of corpora of the penis Psychological arousal