Upper Arm Flashcards
What is the origin of the biceps brachii?
supraglenoid tubercle
coracoid process.
What is the insertion point of the biceps brachii?
Radial tuberosity of the radius
What is the primary action of the biceps brachii?
Flexes forearm at elbow and supinates forearm
The biceps brachii is involved in both flexion and supination, making it a key muscle for arm movements.
What is the origin of the short head of the biceps brachii?
Coracoid process of the scapula
True or False: The biceps brachii only flexes the elbow joint.
False
In addition to flexing the elbow, the biceps brachii also supinates the forearm.
What are the two main origins of the biceps brachii?
Coracoid process
Right above the glennoid cavity
Where does the brachialis sit compared to the biceps brachii?
Deeper or underneath
What is the origin of the brachialis?
Anterior humerus
What is the insertion of the brachialis?
Coronoid process
What is the action of the brachialis?
Flexion of the forearm
What is the origin of the coracobrachialis?
Coracoid process
What is the insertion of the coracobrachialis?
Medial humerus
What is the action of the coracobrachialis?
Abduct’s arm
Flexes arm
How do the biceps brachii, the brachialis and the coracobrachialis sit on the arm
Biceps brachii sits over the brachialis while the coracobrachialis sits immediately to both the biceps brachii and the brachialis
Where does the triceps brachii sit
Posterior on the arm
What is the origin of the triceps brachii
Right underneath the Glenniod cavity
Posterior humorous
What is the insertion of the triceps brachii?
Olecranon process
What is the action of the triceps brachii
Extends forearm
