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Flashcards in Scrotum Deck (33)
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1

what is the scrotum?

a fibromuscular cutaneous sac

2

where is the scrotum located?

between the penis and anus

3

how is the scrotum like?

dual-chambered

4

what does the scrotum form?

an expansion of the perineum

5

Embryologically, where is the scrotum derived from?

the genital swellings

6

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

the genital swellings fuse in the midline

7

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

by the scrotal raphe

8

what is the scrotum biologically homologous to in females?

labia majora

9

what does the scrotum consist of?

3 major paired structures:
testis
epididymis
spermatic cord

10

what is the function of the testis?

site of sperm production

11

where is the epididymis?

situated at the head of each testicle

12

function of epididymis?

a storage reservoir for sperm

13

what is the spermatic cord?

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

14

what else is also located within the scrotum?

muscle fibres
(dartos muscle)

15

what is the dartos muscle? location?

a sheet of smooth muscle, situated immediately underneath the skin

16

function of the dartos muscle?

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

17

where does the scrotum receives it neurovascular supply from?

the nearby vessels and nerves

18

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

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

19

where does the scrotum receives its arterial supply from?

the anterior and posterior scrotal arteries

20

where does the anterior scrotal artery arise from?

the external pudendal artery

21

where does the posterior scrotal artery arise from?

derived from the internal pudendal artery

22

what do the scrotal veins follow?

follow the major arteries

23

where do the scrotal veins drain into?

into the external pudendal veins

24

cutaneous innervation to the scrotum is supplied via?

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

25

where is the genital branch of genitofemoral nerve derived from?

derived from the femoral plexus

26

what does the genital branch of genitofemoral nerve supply?

anterolateral aspect of the scrotum

27

where is the anterior scrotal nerves derived from?

derived from the ilioinguinal nerve

28

what do the anterior scrotal nerves supply?

anterior aspect of the scrotum

29

what is the posterior scrotal nerve derived from?

derived from the perineal nerve

30

what does the posterior scrotal nerve supply?

the posterior aspect of the scrotum