Anatomy Arm-Muscle And Nerves

Front 1

Three components of the anterior compartment of the arm

Back 1

Brachialis, biceps brachii, and coracobrachialis

Front 2

All anterior compartment muscles of the arm are innervated by what muscle

Back 2

Musculocutaneous n.

Front 3

Origin, insertion, innervation, action of biceps brachii

Back 3

Origin: Long head=supraglenoid tubercle Short head=coracoid process
Insertion: Radial tuberosity
Innervation: Musculocutaneous n
Action: Flexor of forearm at elbow

Front 4

Origin, insertion, innervation, action of coracobrachialis

Back 4

Origin: Coracoid process
Insertion: Humerus
Innervation: musculocutaneous n
Action: flex and add of arm and shoulder

Front 5

Origin, insertion, innervation, action of brachialis

Back 5

Origin: Humerus (lower half)
Insertion: Coranoid process
Innervation: Musculocutaneous n.
Action: Flexor of forearm at elbow

Front 6

Function of radial nerve

Back 6

extension of forearm at elbow, and extension of wrist

Front 7

Origin, insertion, innervation, action of triceps brachii

Back 7

Origin: Long head=infraglenoid, lateral head=upper humerus
medial head=lower humerus
Insertion: olecranon
Innervation: radial nerve
Action: extensor of forearm at elbow

Front 8

3 impt connections of the elbow joint

Back 8

1- head of the radius and capitellum
2-Trochlea and olecranon
3-Head of the radius and ulnar=proximal radioulnar joint

Front 9

What two ligaments provide stability against lateral movement of the radius/ulna

Back 9

Ulnar and radial ligaments

Front 10

Most of the upper limbs are supplied by what artery

Back 10

Subclavian arteries

Front 11

The subclavian artery becomes the ___ a.

Back 11

Axillary

Front 12

1st, 2nd,3rd segment of the axillary nerve and their branches

Back 12

1st= superior thoracic artery
2nd= thoracoacormial a. and lateral thoracic artery
3rd= anterior/posterior circumflex artery and subscapular artery

Front 13

4 regions supplied by the thoracoacromial a.

Back 13

subclavian, acromion, pec minor and deltoid

Front 14

1st segment of axillary-between what 2 features

Back 14

lateral border of 1st rib and medial border of pec minor

Front 15

2nd segment of axillary is posterior to what

Back 15

pec minor

Front 16

3rd segment of axillary a. between what 2 features

Back 16

lateral border of pec minor and inferior part of teres major

Front 17

What two nerves come together to supply the humerus?

Back 17

Anterior and posterior circumflex humeral arteries

Front 18

What two nerves come together to supply the posterior scapular components

Back 18

Suprascapular a and circumflex scapular a.

Front 19

At what margin does the axillary turn into the brachial a

Back 19

Lower margin of the teres major muscle

Front 20

What does the profunda brachii of the arm supply?

Back 20

Posterior compartment (i.e. triceps)

Front 21

2 pairs of nerve-artery pais

Back 21

Radial n + profunda brachii
axillary n. + posterior circumflex humeral artery

Front 22

What hole does the brachial pass through

Back 22

cubital foss

Front 23

Musculocutaneous nerve supplies the

Back 23

anterior compartment of the arm

Front 24

axillary nerve innervates the

Back 24

deltoid

Front 25

radial nerve innervates the

Back 25

trapezius (extensor of forearm) and cutaneous innervation of the hand

Front 26

median nerve innervates

Back 26

forearm and hand (both motor and sensory)

Front 27

Ulnar nerve supplies

Back 27

1/2 forearm, 1/2 muscles in hand, 1/2 cuttaneous innvertaion of hand.