9.3: Muscles of the Lower Arm and Hand

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Anatomists refer to the lower arm as the forearm or antebrachium. The musculature of the forearm is complicated. Figure \(\PageIndex{1}\) shows the muscles of the forearm.

This multipart figure shows the different muscles that move the forearm. The major muscle groups are labeled. — Figure \(\PageIndex{1}\): Muscles of the forearm. (CC-BY-4.0, OpenStax, Human Anatomy)

Figure \(\PageIndex{2}\) shows the muscles of the hands.

This multipart figure shows the intrinsic muscles of the hand with the major muscle groups labeled. — Figure \(\PageIndex{2}\): The muscles of the hands. (CC-BY-4.0, OpenStax, Human Anatomy)

LAB 9 EXERCISES \(\PageIndex{1}\)

1. Using the full-scale arm model, locate and identify the muscles of the forearm selected by your instructor.

2. Write down the muscles of the forearm selected by your instructor and, for each, give the location of that muscle and what effect contracting that muscle has.

Muscle	Location & description	Action(s)

LICENSES AND ATTRIBUTIONS

CC LICENSED CONTENT, ORIGINAL

A&P Labs. Authored by: Ross Whitwam. Provided by: Mississippi University for Women. Located at: http://www.muw.edu. License: CC BY-SA: Attribution-ShareAlike

CC LICENSED CONTENT, SPECIFIC ATTRIBUTION

Figure \(\PageIndex{1}\). Muscles of the forearm.. Authored by: OpenStax College. Located at: https://cnx.org/resources/6669b272a6...he_Forearm.jpg. Lic ense: CC BY-SA: Attribution-ShareAlike

Figure \(\PageIndex{2}\). The muscles of the hands.. Authored by: OpenStax College. Located at: https://cnx.org/resources/49b609261e...f_the_Hand.jpg. Licen se: Public Domain: No Known Copyright