Lecture 2

Question 1

Layers of abdominal wall

Answer 1

Skin
Superficial fascia - campers (fatty, nerves, blood vescels ect - scampers - deep membraneous
Muscles - external/interal obliques, transverese abdominis
Transversalis fascia
Extraperiotoneal fascai
parietal peritoneum

Question 2

Rectus abdominis
Function
nerve supply

Answer 2

flexes trunk
forces expiration
anterior rami of throacic spinal nerves

Question 3

External Oblique
Function
nerve supply
fiber direction

Answer 3

Both contract - flex trunk
-each individual - turn body to opposite side, bend trunk to same side
nerve - anterior rami of thoracic spinal nerves
-inferior medial

Question 4

Internal oblique
Function
nerve supply
fiber direction

Answer 4

Flex trunk
-moves body to same side, and flexes to same side
nerve - anterior rami of thoracic spinal nerves
-superior medial

Question 5

Transversus abdominins
Function
nerve supply
fiber direction

Answer 5

supports abdominal wall

• transverse fiber direction
• anterior rami of thoracic spinal nerves

Question 6

what are aponeurosus

Answer 6

layers of broad flat tendons

Question 7

where does the rectus sheath stop posteriorly ?

Answer 7

3/4 down at accurate line, aponerosis of tendons of 3 muslces

Question 8

Arterial supply to external/interal oblique and transversalis abdominis
-where do they run from

Answer 8

Superior epigastric and Inferior epigastric
-these arteries run underneath recuts abdominis (on top of transversalis fascia and within rectus sheath) and anastamose together

Question 9

viens of external/interal oblique and transversalis abdominis

Answer 9

thoracoepigastric and superficial epigastric

Question 10

Dermatomes - Where do the nerves run? where is neurovascular plane?

Answer 10

neurovascular plane - between transversus abdominis and internal oblique before piercing wall to reach skin

Question 11

Senstaiton of parietal and visceral periotoneum

Answer 11

Parietal - pain, touch, temp, pressure (somatic and autonomic pain)
Visceral - Sensitive to stretch - ANS (only autonomic pain)

Question 12

Paracolic gutters

Answer 12

lateral to ascending and descending colons

• create a pathway for peritoneal fluid to migrate out of abdomen
• right hand side larger, however can get pain that is not acually close to area e.g feels like acute appendicitis