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Questions and Answers
What is the action of the innermost intercostal muscle?
What is the action of the innermost intercostal muscle?
- Depresses the ribs during expiration
- Contracts during forced expiration
- Elevates the ribs during inspiration
- Stabilizes the bony thorax (correct)
Which muscle depresses the ribs during expiration?
Which muscle depresses the ribs during expiration?
- Innermost intercostal muscle
- External intercostal muscle
- Subcostal muscle
- Transversus thoracic muscle (correct)
Where does the subcostal muscle have its inferior attachment?
Where does the subcostal muscle have its inferior attachment?
- Internal surface of the rib above
- External surface of the rib below (correct)
- External surface of the rib above
- Internal surface of the xiphoid process
Which muscle is active in forced inspiration by elevating the ribs below?
Which muscle is active in forced inspiration by elevating the ribs below?
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What nerve innervates the innermost intercostal muscle?
What nerve innervates the innermost intercostal muscle?
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Which muscle attaches along the inner surface of the costal cartilage of ribs 2-6?
Which muscle attaches along the inner surface of the costal cartilage of ribs 2-6?
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