Scrotum

Question 1

what is the scrotum?

Answer 1

a fibromuscular cutaneous sac

Question 2

where is the scrotum located?

Answer 2

between the penis and anus

Question 3

how is the scrotum like?

Answer 3

dual-chambered

Question 4

what does the scrotum form?

Answer 4

an expansion of the perineum

Question 5

Embryologically, where is the scrotum derived from?

Answer 5

the genital swellings

Question 6

during developement (embryologically), what happens to the genital swellings?

Answer 6

the genital swellings fuse in the midline

Question 7

what is the fusion of the genital swellings marked by in adults?

Answer 7

by the scrotal raphe

Question 8

what is the scrotum biologically homologous to in females?

Answer 8

labia majora

Question 9

what does the scrotum consist of?

Answer 9

3 major paired structures:
testis
epididymis
spermatic cord

Question 10

what is the function of the testis?

Answer 10

site of sperm production

Question 11

where is the epididymis?

Answer 11

situated at the head of each testicle

Question 12

function of epididymis?

Answer 12

a storage reservoir for sperm

Question 13

what is the spermatic cord?

Answer 13

a collection of muscle fibres, vessels, nerves and ducts that run to and from the testes

Question 14

what else is also located within the scrotum?

Answer 14

muscle fibres

dartos muscle

Question 15

what is the dartos muscle? location?

Answer 15

a sheet of smooth muscle, situated immediately underneath the skin

Question 16

function of the dartos muscle?

Answer 16

It acts to help regulate the temperature of the scrotum, by wrinkling the skin – this decreases surface area, reducing heat loss

Question 17

where does the scrotum receives it neurovascular supply from?

Answer 17

the nearby vessels and nerves

Question 18

how is the neurovascular supply of the scrotum different from the testis?

Answer 18

the testes carry their vessels, nerves and lymph drainage from the abdomen during their development

Question 19

where does the scrotum receives its arterial supply from?

Answer 19

the anterior and posterior scrotal arteries

Question 20

where does the anterior scrotal artery arise from?

Answer 20

the external pudendal artery

Question 21

where does the posterior scrotal artery arise from?

Answer 21

derived from the internal pudendal artery

Question 22

what do the scrotal veins follow?

Answer 22

follow the major arteries

Question 23

where do the scrotal veins drain into?

Answer 23

into the external pudendal veins

Question 24

cutaneous innervation to the scrotum is supplied via?

Answer 24

supplied via several nerves:
Genital branch of genitofemoral nerve
Anterior scrotal nerves
Posterior scrotal nerves
Perineal branches of posterior femoral cutaneous nerve

Question 25

where is the genital branch of genitofemoral nerve derived from?

Answer 25

derived from the femoral plexus

Question 26

what does the genital branch of genitofemoral nerve supply?

Answer 26

anterolateral aspect of the scrotum

Question 27

where is the anterior scrotal nerves derived from?

Answer 27

derived from the ilioinguinal nerve

Question 28

what do the anterior scrotal nerves supply?

Answer 28

anterior aspect of the scrotum

Question 29

what is the posterior scrotal nerve derived from?

Answer 29

derived from the perineal nerve

Question 30

what does the posterior scrotal nerve supply?

Answer 30

the posterior aspect of the scrotum

Question 31

where are the Perineal branches of posterior femoral cutaneous nerve derived from?

Answer 31

derived from the sacral plexus

Question 32

what does the Perineal branches of posterior femoral cutaneous nerve supply?

Answer 32

the inferior aspect of the scrotum

Question 33

lymphatic drainage of scrotum?

Answer 33

lymph fluid drains to the nearby superficial inguinal nodes