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Flashcards in Inguinal Region Deck (92)
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What is the inguinal region

region between ASIS and pubic tubercle

1

Why is the inguinal region anatomically and clinically important

Anatomically: important for structures passing between abdomen and lower extremity
Clinically: potential site for hernias

2

Where is the inguinal canal

oblique, inferomedially oriented passage along lower anterolateral abdominal wall
-parallel and just superior to inguinal l.
-connects extraperitoneal space of abdomen to scrotum/labia majora

3

What is contained in the inguinal canal (specific for males and females as well)

Male: spermatic cord
Female: round ligament of uterus
Jim: His undescended balls
Blood vessels, lymphatics, and ilioinguinal n

4

What and where is the deep (internal) inguinal ring

-Internal location of evaginated transversalis fascia
-1cm superior to the middle portion of inguinal ligament
-Lateral to the inferior epigastric a,v and inferior to transversus abdominis m.

5

What and where is the superficial (external) inguinal ring

-Slit-like opening in inferomedial portion of external oblique aponeurosis
-Located superolateral to pubic tubercle to pubic tubercle

6

What are the lateral margins of superficial inguinal ring called

Crura

7

Where does the lateral crus attach

pubic tubercle

8

Where does the medial crus attach

pubic crest

9

Where does the intercrural fibers span

between 2 crura to prevent separation

10

What is between the deep and superficial inguinal rings

muscolophrenic arches

11

How does the body resist the tendency for abdominal contents to herniates

collapse of the canal along with the prenatal occlusion of the peritoneal processus vaginalis and the contraction of the arches

12

What is the anterior wall of the inguinal canal

external oblique aponeurosis

13

What makes the posterior wall of the inguinal canal

Transversalis fascia

14

What reinforces the transversalis fascia of the posterior wall

conjoint tendon medially attaching to pubic crest and pectin crest

15

What forms the roof of the inguinal canal

internal oblique and transversus abdominis mm/aponeurosis

16

What forms the floor of the inguinal canal

inguinal ligament

17

What is the processus vaginalis

peritoneal diverticulum traversing the developing inguinal canal
-carries muscular/fascial layers through the inguinal canal
-will form fascial layers around the spermatic cord and testis

18

What does the processus vaginalis persist as

distal sacular portion persists as parietal/visceral tunica vaginalis

19

How is the processus vaginalis attached to the deep ring in males

gubernaculums

20

What does the guernaculums persist as

scrotal ligament

21

Where do the ovaries develop

endoabdominal fascia of posterior abdominal wall

22

Where does the processus vaginalis traverse in female development

traverse inguinal canal and protrude into labia majora

23

What does the gubernaculum connect in females

ovary and uterus to developing labia majora

24

What does the gubernaculum persist as in females

>ovarian ligament between ovary and uterus
-prevents ovary from descending through the inguinal canal
>round ligament between uterus and labia majora

25

What are the fascial layers of the spermatic cord

External spermatic fascia
Cremasteric fascia
Internal spermatic fascia

26

Where is the external spermatic fascia derived from

external oblique aponeurosis and investing fascia

27

Where is the cremasteric fascia derived from

internal oblique investing fascia

28

Where is the cremaster muscle derived from

from internal oblique m and investing fascia

29

What is the cremaster muscle

-raises/lowers testis in response to temperature
-helps maintain temperature to support spermatogenesis