Muscles of the thorax Flashcards by Leah Kellogg | Brainscape

Q

Intercostal (external)

A

Attachments: from rib to rib oriented from superior-lateral to inferior-medial

Actions: elevation of ribs

Innervation: intercostal n.

Blood supply: anterior & posterior intercostal aa.

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Q

Intercostal (internal & innermost)

A

Attachments: from rib to rib oriented superior-medial to inferior-lateral

Actions: depression of ribs

Innervation: intercostal n.

Blood supply: anterior & posterior intercostal aa.

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Q

Transversus thoracis

A

Attachments: from posterior sternum to costal cartilages

Actions: depression of ribs

Innervation: intercostal n.

Blood supply: internal thoracic & anterior intercostal aa.

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