Abdominal Action
This abdominal muscle flexes the vertebral column during a curl-up.
What is the rectus abdominis?
This superficial shoulder muscle abducts the arm.
What is the deltoid?
This rotator cuff muscle abducts the arm.
What is the supraspinatus?
This posterior arm muscle extends the elbow.
What is the triceps brachii?
This muscle pronates the forearm.
What is the pronator teres?
This abdominal muscle is listed specifically for abdominal compression, without trunk rotation.
What is the transversus abdominis?
This broad superficial back muscle extends, adducts, and medially rotates the arm.
What is the latissimus dorsi?
This rotator cuff muscle medially rotates the arm and stabilizes the humerus.
What is the subscapularis?
This anterior arm muscle has “biceps” in its name and flexes the elbow.
What is the biceps brachii?
This wrist flexor also abducts the wrist toward the radial side.
What is the flexor carpi radialis?
These two abdominal muscles both contribute to trunk rotation and abdominal compression.
What are the external and internal abdominal obliques?
This deep posterior shoulder muscle adducts and medially rotates the arm but is not part of the rotator cuff.
What is the teres major?
These two rotator cuff muscles laterally rotate the arm.
What are the infraspinatus and teres minor?
This anterior arm muscle, distinct from biceps brachii, flexes the elbow. Its name does not include “radialis.”
What is the brachialis?
This wrist flexor also adducts the wrist toward the ulnar side.
What is the flexor carpi ulnaris?
Name all three abdominal-wall muscles on the list whose actions include abdominal compression.
What are the external abdominal oblique, internal abdominal oblique, and transversus abdominis?
These superficial chest and back muscles both adduct and medially rotate the arm, but the chest muscle flexes it while the back muscle extends it.
What are the pectoralis major and latissimus dorsi, respectively?
Of teres major and teres minor, this one belongs to the rotator cuff and produces lateral rotation.
What is the teres minor?
This forearm muscle flexes the elbow and has a name referring to both the arm and radius.
What is the brachioradialis?
This anterior forearm muscle is listed as flexing the wrist without an accompanying abduction or adduction action.
What is the palmaris longus?
A movement combines vertebral-column flexion with trunk rotation. Identify the primary listed flexor and both listed rotators.
What are the rectus abdominis, and the external and internal abdominal obliques?
Identify all three muscles on your list whose actions include both arm adduction and medial rotation.
What are the pectoralis major, latissimus dorsi, and teres major?
Name all four rotator cuff muscles.
What are the supraspinatus, infraspinatus, teres minor, and subscapularis?
Name all three elbow flexors listed on your sheet, followed by their listed elbow-extending antagonist.
What are the biceps brachii, brachialis, and brachioradialis; and the triceps brachii?
Identify the wrist flexor that abducts, the wrist flexor that adducts, and the listed wrist flexor with neither side-to-side action.
What are the flexor carpi radialis, flexor carpi ulnaris, and palmaris longus, respectively?