Muscles of the Arm

Identify the SHOULDER action for the BICEPS BRACHII muscle.

• flexion at the shoulder (glenohumeral joint)

• extension at the shoulder (glenohumeral joint)

• abduction at the shoulder (glenohumeral joint)

• adduction at the shoulder (glenohumeral joint)

• this muscle does not cross the shoulder and therefore has no action at the shoulder

Identify the SHOULDER action for the BRACHIALIS muscle.

• flexion at the shoulder (glenohumeral joint)

• extension at the shoulder (glenohumeral joint)

• abduction at the shoulder (glenohumeral joint)

• adduction at the shoulder (glenohumeral joint)

• this muscle does not cross the shoulder and therefore has no action at the shoulder

Identify the 2 SHOULDER action for the CORACOBRACHIALIS muscle.

• flexion at the shoulder (glenohumeral joint)

• extension at the shoulder (glenohumeral joint)

• abduction at the shoulder (glenohumeral joint)

• adduction at the shoulder (glenohumeral joint)

• this muscle does not cross the shoulder and therefor has no action at the shoulder

Identify the ELBOW action for the CORACOBRACHIALIS muscle.

• flexion at the elbow (humeroulnar joint)

• extension at the elbow (humeroulnar joint)

• this muscle does not cross the elbow and therefore has no action at the elbow

Identify the SHOULDER action for the TRICEPS BRACHII muscle.

• flexion at the shoulder (glenohumeral joint)

• extension at the shoulder (glenohumeral joint)

• this muscle does not cross the shoulder and therefore has no action at the shoulder

A?

B?

A?

B?

A?