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701 Anatomy > elbow joint and arm > Flashcards

elbow joint and arm Flashcards

1
Q

muscles that move the elbow joint (compartment only)

A

anterior compartment
posterior compartment
racial fascia

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2
Q

anterior compartment of the arm consist of

A
  • flexors of elbow and shoulder
  • musculocutaneous nerve innervation
  • arterial supply from branches of artery
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3
Q

posterior compartment of the arm consist of

A
  • extensors
  • radial nerve innervation
  • arterial supply from branches of brachial and deep brachial arteries
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4
Q

brachial fascia consist of

A

inter muscular septa

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5
Q

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

A

true

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6
Q

We are better pullers than ______

A

pushers

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7
Q

anterior compartment contributes to ____ of the forearm

A

supination

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8
Q

biceps brachii content

A
  • 3 joint muscle
  • glenohumeral, elbow, radi-ulnar joints
  • shoulder flexion, elbow flexion, supination
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9
Q

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

A

supinator

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10
Q

long head of bicep brachii inserts on

A

radial tuberosity

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11
Q

short head origin

A

coracoid process on scapula

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12
Q

brachial content

A
  • strongest flexor
  • main flexor of the forearm (flexes in all positions)
  • insertion on ulna
  • some innervation from radial nerve
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13
Q

does brachial contribute to pronation and supination

A

no

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14
Q

origin and insertion of brachial

A

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

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15
Q
  • Brachial - primary ___ of elbow.
  • Not influenced by forearm position (___,___).
  • Steadies movement during elbow _____ (eccentric contraction)
A
  • flexor
  • pronated and supinated
  • extension
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16
Q

origin and insertion of brachioradialis (posterior forearm)

A

O: distal humerus
I: styloid process of radius

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17
Q

brachioradialis innervation

A

radial nerve

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18
Q

brachioradialis action

A

elbow flexion
semipro nation of the forearm

19
Q

content of brachioradialis

A

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

20
Q

when is brachioradialis most activated

A

neutral position

21
Q

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

A
  • musculocutaneous
  • weak flexion
22
Q

what innervates coracobrachialis

A

musculocutaneous nerve

23
Q

coracobrachialis content

A
  • does not act on elbow joint
  • flexion and adduction of arm
  • stabilizes glenohumeral joint (shoulder flexion)
24
Q

origin and insertion of coracobrachialis

A

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

25
Q

nerve entrapment site for musculocutaneous nerve

A

coracobrachialis - pierced by it

26
Q

brachial artery - continuation of axillary artery

A
  • starts medial to humerus
  • accompanies the median nerve
  • small branches supply muscles of the arm
27
Q

deep brachial artery accompanies with ____ nerve

A

radial

28
Q

Triceps brachii insertion, action, innervation

A

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

29
Q

most active triceps brachii

A

medial head

30
Q

strongest triceps brachii

A

lateral head

31
Q

weakest triceps brachii

A

long head

32
Q

Lateral and medial head of triceps brachii originates on

A

posterior humerus

33
Q

long head triceps brachii originate

A

infraglenoid tubercle of scapula

34
Q

anconeus contributes to _____ extension

A

elbow

35
Q

ulnar collateral ligament tear is also known as

A

Tommy John

36
Q

UCL can stretch, tear or fray from ______ ______

A

repetitive throwing

37
Q

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

A
  • hamstring tendon
  • patellar ligament,
  • plantaris
  • palmaris longus tendon
38
Q

dislocation of elbow joint happens when

A
  • distal end of humerus through weak anterior portion of joint capsule
  • ulnar collateral often torn
    -olecranon moves relative to humerus
39
Q

what makes it the terrible trait

A
  • posterior dislocation
  • radial head fracture j
  • fracture of coronoid process
40
Q

results of swinging kids

A

force causes radial head to subluxate from angular ligament

41
Q

nurse maids elbow or sublimation of radial head

A

force causes radial head to subluxate from angular ligament

42
Q

normal carrying angle

A

5-10 male
10-15 female

43
Q

cubital fossa is an entrapment for

A

median nerve

701 Anatomy (18 decks)

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