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Question 1

Name A O I and NI for brachialis

Answer 1

Action: elbow flexion
Origin: distal half of anterior surface of humerus
Insertion: tuberosity and coronoid process of ulna

N: Musculocutaneous, small branch from radial C5, 6

Question 2

Name Brachiordalis A, O, insertion and N

Answer 2

Action: elbow flexion, assist to pronate and supinate the forearm when movement are resisted
Origin: proximal 2/3 of the lateral supracondylar ridge of humerus
I: styloid process of radius
N: radial C5,6

Question 3

The__________ is the only muscle that runs the length of the forearm, but does not cross the wrist joint

Answer 3

Brachiordalis

Question 4

The _______ and______helps divide flexor/extensor tendons on the forearm

Answer 4

Brachiordalis and shaft of ulna

Question 5

Name o I A nerve for biceps Brachii

Answer 5

Action: elbow flexion and forearm supination
OL : supraglenoid tubercle of scapula
OShort: Coracoid process of scapula
I: tuberosity of radius and aponerosis of the biceps brachii
N: Musculocutaneous C5, 6

Question 6

Origin insertion and action for triceps brachii and which muscle has a different action

Answer 6

All head extend the elbow and the long head action is to extend and Adduct the shoulder

O long: Infraflenoid tubercle of the scapula
Lateral: posterior surface of proximal half of humerus
Medial: posterior surface of distal half of the humerus
N: Radial C6, 7, 8, T1
All muscles insert on olecranon process

Question 7

Name Pronator teres o I nerve and a

Answer 7

A: forearm pronation
O: common flexor tendon from medial epicondyle of the humerus and coronoid process of the ulna
I: middle lateral surface of the radius
N: Median C6, 7

Question 8

Name actions for all fibers of pectoralis major

Answer 8

Adduct the shoulder
Medially rotate the shoulder
Assist to elevate the thorax during inhalation (arm fixed)

Question 9

Name actions (2) for upper fibres of the pec. Major

Answer 9

Flex the shoulder
Horizontally adduct shoulder

Question 10

Name actions for lower fibers of the pec major

Answer 10

Extend the shoulder

Question 11

Nerve innervation for upper fibers of pec major

Answer 11

Lateral pectoral C5,6,7

Question 12

What is the nerve innervation for lower fibers from pec major

Answer 12

Lateral and medial pectoral c6,7,8 T1

Question 13

How to you access pec major?

Answer 13

Partner supine, Medially rotating his shoulder against your resistance.
Side lying supporting parters arm; shoulder flexed and pulling arm anteriorly toward you

Question 14

Name actions (4) for pec minor

Answer 14

Depresses the scapula
Abducts the scapula
Downward rotates the scapula
(Fixed scapula) Assist to ELEVATE the thorax during forced inhalation

Question 15

When do you use pec minor?

Answer 15

Deep inhalation
Reaching deep into front pocket (depress scapula)

Question 16

Name actions for biceps brachii

Answer 16

Flex the elbow
Supinate the forearm
Flex shoulder

Question 17

Name action (1) origin, insertion and nerve for anconeus

Answer 17

A: Extend the elbow
O: lateral epicondyle of the humerous
I: olecranon process and posterior, proximal surface of the ulna
N: radial c7,8

Question 18

Name action(1), origin, and insertion for Pronator quadratus

Answer 18

A: pronates the forearm
O: medial, anterior surface of distal ulna
I: lateral, anterior surface of distal radius
N: median c7,8 T1

Question 19

Name action (1), origin, insertion and nerve for supinator.

Answer 19

A: supinate forearm
O: lateral epicondyle of the humerus, radial collateral ligament, annular ligament, and supinator crest of the ulna
I: anterior, lateral surface of proximal 1/3 of radial shaft
N: radial c5,6,7

Question 20

Name action (2), origin, insertion and nerve for Coracobrachialis

Answer 20

A: flex the shoulder and adduct the shoulder
O: coracoid process of the scapula
I: medial surface of mid-humeral shaft
N: radial c5,6,7