Rectus Abdominis

Description

Overview of rectus abdominis muscle and nerve supply

Name

• Rectus Abdominis
• Abs
• Six Pack

General

• Pair of segmented skeletal muscles of the ventral abdomen
• Gives the abdominal wall its characteristic "six pack" appearance

Origin

• Pubic Symphysis
• Pubic Crest

Insertion

• Xiphoid Process
• Ribs 5-7 (costal cartilage)

Actions

• Trunk flexion
• Expiration

Vascular Supply

• Inferior and Superior Epigastric Arteries
• Posterior Intercostal Arteries
• Subcostal Arteries
• Deep Circumflex Arteries

Innervation

• Intercostal Nerves (T7-T11)
• Subcostal Nerve (T12)

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Clinical Significance

• Rectus Abdominis Strain

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See Also

• Physical Exam Abdomen
• Abdomen and Pelvis Anatomy Main
• Abdominal Pain Main

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