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.
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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.
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muscle anatomy
The muscle-spindle feedback circuit
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Distribution of dystrophin in muscle cells. (a) In normal muscle cells, all the dystrophin is locate
Dog Muscle Anatomy
Smooth muscle