Axial Muscles - Trunk Muscles Flashcards

Name Origin, Insertion, and Action

1
Q

Diaphragm

A

O: Xiphoid Process, Ribs, Lumbar Vertebra

I: Central Tendon

A: Inspiration

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2
Q

Internal Intercostals

A

O: Rib Below

I: Rib Above

A: Depress Ribs (during exhale)

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3
Q

External Intercostals

A

O: Rib Above

I: Rib Below

A: Elevate Ribs (during inhale)

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4
Q

Internal Oblique

A

O: Inguinal Ligament, Iliac Crest, Thoracolumbar Fascia

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

A: Trunk Flexion, Lateral Flexion, Rotation

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5
Q

External Oblique

A

O: Lower 8 Ribs Laterally

I: Iliac Crest, Linea Alba

A: Trunk Flexion, Lateral Flexion, Rotation

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6
Q

Rectus Abdominis

A

O: Pubis

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

A: Trunk Flexion, Compression of Abdomen

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7
Q

Transverse Abdominis

A

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

I: Abdominal Aponeuroses, Linea Alba

A: Compression of Abdomen

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