Axial Muscles - Trunk Muscles

Question 1

Diaphragm

Answer 1

O: Xiphoid Process, Ribs, Lumbar Vertebra

I: Central Tendon

A: Inspiration

Question 2

Internal Intercostals

Answer 2

O: Rib Below

I: Rib Above

A: Depress Ribs (during exhale)

Question 3

External Intercostals

Answer 3

O: Rib Above

I: Rib Below

A: Elevate Ribs (during inhale)

Question 4

Internal Oblique

Answer 4

O: Inguinal Ligament, Iliac Crest, Thoracolumbar Fascia

I: 10th, 11th, 12th Ribs; Abdominals aponeurosis

A: Trunk Flexion, Lateral Flexion, Rotation

Question 5

External Oblique

Answer 5

O: Lower 8 Ribs Laterally

I: Iliac Crest, Linea Alba

A: Trunk Flexion, Lateral Flexion, Rotation

Question 6

Rectus Abdominis

Answer 6

O: Pubis

I: Xiphoid Process, Costal Cartilage of Ribs 5-7

A: Trunk Flexion, Compression of Abdomen

Question 7

Transverse Abdominis

Answer 7

O: Inguinal Ligament, Iliac Crest, Thoracolumbar Fascia, Last 6 Ribs

I: Abdominal Aponeuroses, Linea Alba

A: Compression of Abdomen