inguinal canal & spermatic cord Flashcards Preview

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Flashcards in inguinal canal & spermatic cord Deck (18):
1

name the layers of the abdominal wall

1. external oblique
2. internal oblique
3. transversus abdominis
4. transversalis fascia
5. parietal peritoneum

2

how is the inguinal ligament formed?

is the rolled edge of the external oblique aponeurosis

3

what ligament connects the inguinal and pectineal ligament together?

lacunar ligament

4

describe inguinal canal in males

oblique passageway carrying structures to/from the testes and abdomen via spermatic cord ( +ilioinguinal nerve)

5

describe inguinal canal in females

carries round ligament of the uterus from the pelvis to the labia majora ( +ilioinguinal nerve)

6

what is the superficial inguinal ring and where would you find it?

- a triangular-shaped defect in the aponeurosis of external oblique

- found superior and lateral to the pubic tubercle

7

what is the deep inguinal ring and where would you find it?

oval defect in transversalis fascia

found half way between ASIS and pubic symphysis (not tubercle), is lateral to inferior epigastric artery

8

what muscular layer does internal oblique give rise to

cremasteric muscle

9

what are the borders of the inguinal canal

anterior wall
- aponeurosis of external oblique
- aponeurosis of internal oblique

Floor
- inguinal ligament
- lacunar ligament

roof
- fibers of internal oblique
- transversus abdominis

posterior wall
- transversalis fascia
- conjoint tendon

10

what forms the conjoint tendon

transversus abdominis + internal oblique

11

define the borders of the hesselbach's triangle and describe its importance clinically

lateral = rectus abdominis
superior = inferior epigastric artery
inferior = inguinal ligament

direct site of hernia's

12

define the layers of the spermatic cord

transversalis fascia (D.I.R) = internal spermatic cord
transversus abdominis = no covering
internal oblique = cremaster muscle
external oblique (S.I.R) = external spermatic fascia

13

what is the blood supply to the scrotum

internal and external pudendal arteries

14

describe the content within the spermatic cord

arteries
- artery of vas deferens
- testicular artery
- cremasteric artery

nerves
- genital branch of genitofemoral nerve
- sympathetic nerve

other structures
- lymphatics
- vas deferens
- tunica vaginalis

venous plexus
- pampiniform plexus

15

define testicular torsion and test to identify this

testicular torsion is when the spermatic cord twists around, cutting off blood supply (causing ischemia)

cremasteric reflect would be absent or decreased in a patient with testicular torsion

16

define inguinal hernias

protrusion of abdominal contents through inguinal canal
2 types: direct & indirect

17

describe the differences between direct and indirect hernias

indirect
- goes through the entirety of inguinal canal e.g. through D.I.R (surrounded by all layers of spermatic cord)
- lateral to inferior epigastric
- normally due to a congenital defect
- often seen in younger people

direct
- herniate through weak area = hesselbach triangle
- medial to inferior epigastric
- males 10x more likely
- more commonly in middle age/elderly

18

describe femoral hernias

- affects women more commonly
- below the inguinal ligament, through femoral canal