Anterior Arm

Question 1

Cubital Fossa

Answer 1

Floor: Brachialis muscle
Roof: ___ aponeurosis

Question 2

Coracobrachialis

Answer 2

Origin: Coracoid process
Insertion: Distal medial humerus
Innervated: Muscular Cutaneous Nerve C5,C6,C7
Function: Shoulder flexion, Shoulder adduction

Does not cross the elbow!

Question 3

Brachialis

Answer 3

Origin: Distal anterior humerus
Insertion: Coranoid process (also inserts on ulna tuberosity)
Innvervated: Muscular Cutaneous Nerve C5,C6,C7
Function: Elbow Function

Question 4

Biceps Brachi

Answer 4

Origin of short head: Coracoid process
Origin of long head: supraglenoid tubercle
Insertion: Biceps Apeneurosis and Radial Tuberosity
Bicep does not connect to the humerus!
Innervated: Muscular Cutaneous Nerve C5,C6,C7
Function: Forearm supination - once the arm is supinated it is a very potent elbow flexor- only the long head helps with shoulder flexion because it crosses the glenerohumeral joint

Long head is held into place by the transverse humeral ligament

Question 5

Artery in the arm from Axillary Artery

Answer 5

Axillary Artery- Brachial Artery - Profunda Brachial Artery (biggest branch also called deep brachial artery) this goes to the back of the Humerus while the Brachial Artery stays in front

Question 6

Triceps Brachi

Answer 6

Origin of long head: infraglenoid tubercle
Origin of lateral head: posterior humerus, superior to radial groove
Origin of medial head: posterior humerus, inferior to the radial groove
Insertion: Olecranon process
Innervated: Radial Nerve C6,C7,C8
Function: Elbow extension and the long head can help with shoulder extension

Question 7

Anconeous

Answer 7

Has no real anatomical function
Origin: lateral epicondyle of the humerus
Insertion: Posterior Ulna
Innervated: Radial Nerve C6,C7,C8

Question 8

Long head of the triceps travels over the _____ and under the ____

Answer 8

terres major, terres minor