elbow joint and arm

Question 1

muscles that move the elbow joint (compartment only)

Answer 1

anterior compartment
posterior compartment
racial fascia

Question 2

anterior compartment of the arm consist of

Answer 2

• flexors of elbow and shoulder
• musculocutaneous nerve innervation
• arterial supply from branches of artery

Question 3

posterior compartment of the arm consist of

Answer 3

• extensors
• radial nerve innervation
• arterial supply from branches of brachial and deep brachial arteries

Question 4

brachial fascia consist of

Answer 4

inter muscular septa

Question 5

true or false: flexors are nearly 2x as strong as extensors

Answer 5

true

Question 6

We are better pullers than ______

Answer 6

pushers

Question 7

anterior compartment contributes to ____ of the forearm

Answer 7

supination

Question 8

biceps brachii content

Answer 8

• 3 joint muscle
• glenohumeral, elbow, radi-ulnar joints
• shoulder flexion, elbow flexion, supination

Question 9

if pronated bicep is a _____. does not flex the elbow

Answer 9

supinator

Question 10

long head of bicep brachii inserts on

Answer 10

radial tuberosity

Question 11

short head origin

Answer 11

coracoid process on scapula

Question 12

brachial content

Answer 12

• strongest flexor
• main flexor of the forearm (flexes in all positions)
• insertion on ulna
• some innervation from radial nerve

Question 13

does brachial contribute to pronation and supination

Answer 13

no

Question 14

origin and insertion of brachial

Answer 14

O: distal 1/2 of humerus
I: coronoid process of ulna

Question 15

• Brachial - primary ___ of elbow.
• Not influenced by forearm position (___,___).
• Steadies movement during elbow _____ (eccentric contraction)

Answer 15

• flexor
• pronated and supinated
• extension

Question 16

origin and insertion of brachioradialis (posterior forearm)

Answer 16

O: distal humerus
I: styloid process of radius

Question 17

brachioradialis innervation

Answer 17

radial nerve

Question 18

brachioradialis action

Answer 18

elbow flexion
semipro nation of the forearm

Question 19

content of brachioradialis

Answer 19

considered part of the extensor compartment of the forearm but does not act on the wrist

Question 20

when is brachioradialis most activated

Answer 20

neutral position

Question 21

if ______ nerve innervation is lost — still retain _____ ______ of forearm

Answer 21

• musculocutaneous
• weak flexion

Question 22

what innervates coracobrachialis

Answer 22

musculocutaneous nerve

Question 23

coracobrachialis content

Answer 23

• does not act on elbow joint
• flexion and adduction of arm
• stabilizes glenohumeral joint (shoulder flexion)

Question 24

origin and insertion of coracobrachialis

Answer 24

O: coracoid process
I:middle humerus (inline with lesser tubercle)

Question 25

nerve entrapment site for musculocutaneous nerve

Answer 25

coracobrachialis - pierced by it

Question 26

brachial artery - continuation of axillary artery

Answer 26

- starts medial to humerus - accompanies the median nerve - small branches supply muscles of the arm

Question 27

deep brachial artery accompanies with ____ nerve

Answer 27

radial

Question 28

Triceps brachii insertion, action, innervation

Answer 28

I: olecranon A: forearm extension, arm extension (long head) Inn: radial nerve

Question 29

most active triceps brachii

Answer 29

medial head

Question 30

strongest triceps brachii

Answer 30

lateral head

Question 31

weakest triceps brachii

Answer 31

long head

Question 32

Lateral and medial head of triceps brachii originates on

Answer 32

posterior humerus

Question 33

long head triceps brachii originate

Answer 33

infraglenoid tubercle of scapula

Question 34

anconeus contributes to _____ extension

Answer 34

elbow

Question 35

ulnar collateral ligament tear is also known as

Answer 35

Tommy John

Question 36

UCL can stretch, tear or fray from ______ ______

Answer 36

repetitive throwing

Question 37

grafts are taken from _____, _____, ____, or ______

Answer 37

- hamstring tendon - patellar ligament, - plantaris - palmaris longus tendon

Question 38

dislocation of elbow joint happens when

Answer 38

- distal end of humerus through weak anterior portion of joint capsule - ulnar collateral often torn -olecranon moves relative to humerus

Question 39

what makes it the terrible trait

Answer 39

- posterior dislocation - radial head fracture j - fracture of coronoid process

Question 40

results of swinging kids

Answer 40

force causes radial head to subluxate from angular ligament

Question 41

nurse maids elbow or sublimation of radial head

Answer 41

force causes radial head to subluxate from angular ligament

Question 42

normal carrying angle

Answer 42

5-10 male 10-15 female

Question 43

cubital fossa is an entrapment for

Answer 43

median nerve