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Author Question: The ____________________ muscle is found on the inner surface of the rib cage, originating on the ... (Read 60 times)

Coya19@aol.com

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on: Jul 4, 2018
The ___________________ _ muscle is found on the inner surface of the rib cage, originating on the margin of the sternum, with fibers coursing to the inner chondral surface of ribs 2 through 6. Contraction of this muscle resists elevation of the rib cage and decreases the volume of the thoracic cavity.
 Fill in the blank(s) with correct word

Question 2

The ___________________ ______ muscle originates on the spinous processes of C7 and T1 through T3. Fibers from these muscles course down and laterally to insert just beyond the angles of ribs 2 through 5. This group of muscles elevates the rib cage during inspiration.
 Fill in the blank(s) with correct word


makaylafy

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Reply #1 on: Jul 4, 2018
Answer to Question 1

transversus thoracis

Answer to Question 2

serratus posterior superior


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