Abdomen

Question 1

External Oblique

Answer 1

Origin: External surfaces of ribs 5-12
Insertion: Linea alba, Pubic tubercle, Anterior half of iliac crest
Innervation: Ventral rami of 6 thoracic nerves
Function: Compresses and supports abdominal viscera, flexes, and rotates trunk

Question 2

Iliacus (somewhere else)

Answer 2

Origin: 
Insertion: 
Peripheral Nerve: 
Nerve Root: 
Function:

Question 3

Internal Oblique

Answer 3

Origin: Thoracolumbar fascia, Anterior 2/3 of iliac crest, Lateral half of inguinal ligament
Insertion: Inferior borders of ribs 10-12, Linea alba, Pubis via conjoint tendon
Innervation: Ventral rami of 6 inferior thoracic and first lumbar nerves
Function:

Question 4

Psoas Major (somewhere else)

Answer 4

Origin: 
Insertion: 
Peripheral Nerve: 
Nerve Root: 
Function:

Question 5

Psoas Minor

Answer 5

Origin: Vertebral margins of T12-L1 vertebrae, Corresponding IV discs
Insertion: Pectineal line, Iliopectineal eminence
Innervation: Ventral rami of first lumbar nerve
Function: Flexes pelvis on vertebral column

Question 6

Pyramidialis

Answer 6

Origin: Body of pubis, Anterior rectus abdominis
Insertion: Linea alba
Innervation: Iliohypogastric nerve
Function: Tenses linea alba

Question 7

Quadratus Lumborum (somewhere else)

Answer 7

Origin: 
Insertion: 
Peripheral Nerve: 
Nerve Root: 
Function:

Question 8

Rectus Abdominis (somewhere else)

Answer 8

Origin: 
Insertion: 
Peripheral Nerve: 
Nerve Root: 
Function:

Question 9

Transversus Abdominis

Answer 9

Origin: Internal surfaces of costal cartilages 7-12, Thoracolumbar fascia, Iliac crest, Lateral third of inguinal ligament
Insertion: Linea alba with aponeurosis of internal oblique, Pubic crest, and Pecten pubis via conjoint tendon
Innervation: Vetral rami of six inferior thoracic and first lumbar nerves
Function: Compresses and supports abdominal viscera