Arm & Cubit

Question 0

describe the brachial fascia.

Answer 0

continues from Pec. Major and deltoid
Surrounds entire and continue to forearm & hand
limits the size of the compartment (compartment syndrome)

Question 1

What are the names of the fascia separations in the arm?

Answer 1

Brachial fascia
Medial inter muscular fascia
Lateral inter muscular fascia

Question 2

describe the MEDIAL inter muscular fascia

Answer 2

separates anterior and posterior compartments medially
splits medially to create the neurovascular compartments
has muscle attachments

Question 3

describe the lateral inter muscular compartment

Answer 3

splits the anterior and posterior compartment laterally

Question 4

describe the Neurovascular compartment.

Answer 4

holds brachial arteries and veins (venae comatans)

Median and ulnar nerve starts (pierces fascia to go posteriorly to elbow)

Question 5

What are the muscles of the anterior(flexors) of the arm?

Answer 5

Brachialis
Biceps brachii
Coracobrachialis

Question 6

What is the origin, insertion and action of Coracobrachialis?

Answer 6

Origin - Corocoid process
Insertion - Upper 1/3 of humerus
Action - Flexing and adducting arm at shoulder joint

Question 7

What is the origin,insertion and action of the Brachialis muscle?

Answer 7

Origin lower anterior shaft of the humerus
insertion- coronoid process of ulna
Action- major flexor of shaft at elbow

Question 8

What is the origin, insertion of the biceps brachii short head?

Answer 8

origin- corocoid process of scapula

insertion - radial tuberosity of radius/ antebrachial fascia

Question 9

What is the origin and insertion of the Biceps brachii long head?

Answer 9

Origin - supraglenoid tubercle

insertion- radial tuberosity/antebrachial fascia

Question 10

What is the action of both Bicep brachii?

Answer 10

Fuses into a common belly 
Stabilize shoulder joint 
assist in flexing elbow 
supunation of arm
assist in flexing shoulder

Question 11

What muscles are used for flexing the shoulder 0-50/60 degrees?

Answer 11

Anterior deltoid
Coracobrachialis
Pec. major (clavicular head)

Question 12

What muscles assist in moving the shoulder muscle from 60-120 degrees?

Answer 12

Trap.(superior and middle)

Serratus anterior

Question 13

What muscles ar used to complete the shoulder rotation 120 -180 degrees?

Answer 13

Supraspinatus (add. arm flexion)

Trap. inferior (add. shoulder rotation)

Question 14

What are the muscles of the posterior( extensors) of the arm?

Answer 14

Triceps brachii (lateral, long, medial)
anconeus

Question 15

What are the major nerves of the upper extremity?

Answer 15

Ulnar
Musclocutaneous
median Radial
axillary