Muscles of Anterolateral Abdominal Wall Flashcards Preview

Thorax & Abdomen > Muscles of Anterolateral Abdominal Wall > Flashcards

Flashcards in Muscles of Anterolateral Abdominal Wall Deck (14)
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0
Q

External Oblique

- Insertion

A

Linea alba, pubic tubercle, anterior half of iliac crest

1
Q

External Oblique

- Origin

A

External surfaces of 5th-12th ribs

2
Q

External Oblique

- Innervation

A

Thoraco-abdominal nerves (anterior rami T7-T11) & Subcostal nerve

3
Q

External Oblique

- Action

A

Action: Compress and support abdominal viscera; flex and rotate trunk

7
Q

Internal Oblique

- Origin

A

Origin

  • Thoracocolumbar fascia
  • anterior 2/3rds of iliac crest
  • CT deep to inguinal ligament
8
Q

Internal Oblique

- Insertion

A
  • Inferior borders of 10th-12th rib
  • Linea alba
  • Pubis via con joint tendon
9
Q

Internal Oblique

- Innervation & Action

A

Thoraco-abdominal nerves (anterior rami T7-T11)
Subcostal & First Lumbar nerve

Compresses and supports abdominal viscera
Flexes and rotates trunk

10
Q

Transversus Abdominus

- Origin

A
  • Internal Sufaces of 7th-12th costal cartilages
  • Thoracolumbar fascia
  • Iliac crest
  • CT deep to inguinal ligament
11
Q

Transversus Abdominis

- Insertion

A
  • Linea alba with aponeurosis of internal oblique
  • Pubic crest
  • Pubis via con joint tendon
12
Q

Transversus Abdominis

Innervation & Action

A
  • Thoraco-abdominal nerves (anterior rami T7-T11)
  • Subcostal & First Lumbar nerve
  • Compresses and supports abdominal viscera
13
Q

Rectus Abdominis

- Origin

A

Pubic symphysis and pubic crest

14
Q

Rectus Abdominis

- Insertion

A
  • Xiphoid process

- 5th-7th costal cartilages

15
Q

Rectus Abdominis

- Innervation

A

Thoraco-abdominal and subcostal nerves

Anterior rami T7-T12 spinal nerves

16
Q

Rectus Abdominis

- Action

A
  • Flexes trunk (lumbar vert) and compresses abdominal viscera
  • Stabilizes and controls tilt of pelvis (antilordosis)