1.3.1 Arm Flashcards

1
Q

Muscles in the anterior compartment of the arm are innervated by?

A

Musculocutaneous nerve

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2
Q

Muscles in the posterior compartment of the arm are innervated by?

A

Radial Nerve

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3
Q

The two muscle compartments of the arm are separated by?

A

Dense connective Tissue: Lateral intermuscular septum and medial intermuscular septum

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4
Q

What is the origin of the short head of the bicep brachii?

A

Coracoid process

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5
Q

What is the origin of the long head of the bicep brachii?

A

Supraglenoid tubercle

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6
Q

The Long Head of the bicep brachii runs inside the ____ and is fixed into place by the ____?

A

Intertubercular groove

Transverse humeral ligament

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7
Q

Distal end of the bicep brachii forms a tendon that will attach?

A

Tuberosity of the radius

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8
Q

What other structure forms from the distal end of the bicep brachii? What does this merge with?

A

Bicipital aponeurosis merges with the antebrachial (deep) fascia

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9
Q

What is the function of the bicipital aponeurosis?

A

To protect the brachial artery and the median nerve. It also aids in lessening pressure on bicep tendon during pronation and supination

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10
Q

Bicipital Myotatic Reflex is testing?

A

Deep tendon reflex

Mainly testing C5-C6

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11
Q

Does the bicep attach to the humerus?

A

NO

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12
Q

What is the function of the bicep brachii?

A

Flexes the shoulder (arm) and elbow (forearm)

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13
Q

What are the characteristics of bicep tendonitis?

A

Tends to affect the long head of the bicep brachii that lies in the intertubercular groove

Caused by repetitive microtrauma - throwing or using a raquet

Symptoms are tenderness and crackling

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14
Q

What are characteristics of dislocation of the tendon of the long head of bicep brachii?

A
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15
Q

What are the characteristics of rupturing the tendon of the long head of bicep?

A
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16
Q

What are the characteristics of fracture- dislocation of the proximal humeral epiphysis?

A
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17
Q

What is the origin of the brachialis muscle?

A

Distal half of humerus

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18
Q

Where does the brachialis muscle insert?

A

It inserts onto the coronoid process and tuberosity of the ulna

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19
Q

What is the function of the coracobrachialis muscle?

A

It flexes and adducts the shoulder

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20
Q

What is the function of the brachialis muscle?

A

Flexes the elbow

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21
Q

What is the origin of the coracobrachialis?

A

The coracoid process

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22
Q

Where does the coracobrachialis insert?

A

Middle 1/3rd of the humerus

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23
Q

What nerve pierces through the coracobrachialis?

A

The musculocutaneous nerve passes through the coracobrachialis

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24
Q

What is the origin of the long head of the tricep brachii?

A

Infraglenoid tubercle

25
Q

What is the origin of the lateral and medial head of the tricep brachii?

A

Posterior of the humerus

26
Q

What is the insertion point of the tricep brachii?

A

Inserts onto the olecranon process of the ulna

27
Q

What is the function of the tricep brachii?

A

Extends the arm

28
Q

What major artery starts from the inferior border of the teres major?

A
29
Q

What is the first branch of the brachial artery?

A

Deep artery of the arm

30
Q

The deep artery of the arm accompanies?

A

The radial nerve

31
Q

What are some clinical correlations associated with the brachial artery?

A
32
Q

What are the important superficial veins of the arm?

A

Cephalic, Basilic, and Median cubital

33
Q

What cephalic vein lies in the _________ and passes through the _______ eventually emptying in the ______?

A

Deltopectoral groove; deltopectoral triangle; axillary vein

34
Q

The basilic vein lies on the _____ side of the arm and merges with veins accompanying the _____ to form the _____?

A

Medial; Brachial artery; axillary vein

35
Q

What median cubital vein is?

A

An anastamotic connection of the cephalic and basilic vein

36
Q

The musculocutaneous nerve is from what cord?

A

Lateral cord of the brachial plexus

37
Q

The musculocutaneous nerve pierces what muscle?

A

Coracobrachialis

38
Q

The musculocutaneous nerve innervates all of the?

A

Anterior flexors

39
Q
A
40
Q

What are the characteristics of a musculocutaneous nerve injury?

A
41
Q

The Radial Nerve originates from the?

A

Posterior cord of the brachial plexus

42
Q

The radial nerve passes around the _____ in the ______ with the _____?

A

Humerus; radial groove; deep artery

43
Q

The deep branch of the radial nerve innervates?

A

Supplies forearm muscles and the elbow joint

44
Q

The superficial branch of the radial nerve supplies?

A

Cutaneous

Supplies the skin of the dorsum of the hand and digits

45
Q

What are the characteristics of a radial nerve injury?

A
46
Q

Wrist drop sign is indicitive of?

A

Radial Nerve injury

47
Q

The median nerve comes from?

A

The union of medial and lateral cord

48
Q

The median nerve innervates?

A

The elbow joint and has no branches in the arm

49
Q

The ulnar nerve comes from?

A

The medial cord of the BP

50
Q

The ulnar nerve pierces what in the middle of the arm?

A

The medial intermuscular septum

51
Q

At the distal end the ulnar nerve passes posterior to the ______ and medial to ________ to enter the forearm?

A

Posterior to the medial epicondyle; medial to olecranon

52
Q

Does the ulnar nerve have branches in the arm?

A

NO

53
Q

What is pronator syndrome?

A
54
Q

What is a sign for pronator syndrome?

A

The Pope’s Sign

55
Q

What is Cubital Tunnel Syndrome?

A
56
Q

What is ulnar nerve injury?

A
57
Q

What are the contents of the cubital fossa?

A

Terminal portion of the brachial artery

Radial and ulnar arteries

Biceps Brachii tendon

Median nerve

Radial nerve branches

58
Q

What are some common venipuncture locations?

A