These videos were produced to help students of human anatomy at Modesto Junior College study their anatomical models. The video in this thread covers the muscles of the upper arm.
The previous thread covered the flexor and extensor muscles of the forearm.
Upper Arm Muscles Video
Table of Muscles of Upper Arm
|Coracobrachialis||corocoid process of the scapula||middle of medial border of humeral shaft||flexion of glenohumeral joint (shoulder joint),
horizontal adduction of glenohumeral joint,
adduction of glenohumeral joint
|Brachialis||distal half of anterior of humerus||coronoid process of ulna||strong flexion of elbow|
|Biceps Brachii||Long head: supraglenoid tubercle
above superior lip of glenoid fossa,
Short head: coracoid process
of scapula and upper lip of glenoid
|tuberosity of radius and
|flexion of elbow,
supination of forearm,
weak flexion of shoulder joint
|Triceps Brachii||Long head: infraglenoid tubercle below
inferior lip of glenoid fossa of scapula,
Lateral head: upper half of posterior surface
Medial head: distal two-thirds of posterior
surface of humerus
|olecranon process of ulna||All heads: extension of elbow,
Long head: extension of shoulder joint,
Medial head: adduction of shoulder joint
Abduction = lateral movement away from the midline of the trunk
Adduction = movement medially toward the midline of the trunk
-ceps = combining* form of Latin caput meaning "head". Biceps literally means "two heads" or "a muscle having two heads". Triceps means three heads.
*A combining form of a word is the form of an independent word that is used in combination with other words, prefixes, affixes or other combining forms to form compounds or derivatives. Aren't you glad they didn't call it the bicaput muscle?