Spinal Cord Quiz: Cross-Sectional Anatomy
External Intercostal Muscles
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The external intercostal muscles are the most superficial muscles of the rib cage and aid in respiration by elevating the ribs during inhalation.
External Intercostal Muscles:
Attachments of External Intercostal: Origin & Insertion
Origin: (proximal attachments)
Inferior border of ribs above.
Insertion: (distal attachments)
Superior border of ribs below.
Actions of External Intercostal:
Elevation of the ribcage during inhalation.
Learn more about the respiratory system with these quizzes and labeled diagrams.
Innervation of External Intercostal:
Intercostal nerves.