This section is from the book "The Horse - Its Treatment In Health And Disease", by J. Wortley Axe. Also available from Amazon: The Horse. Its Treatment In Health And Disease.
A fiat muscle situated on the floor of the chest from one extremity to the other.
Origin. - From the superior surface of the sternum.
Insertion. - By a series of slips into the cartilages of the ribs, from the 2nd to the 8th.
Action. - To assist in expiration.
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