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A - Musculoskeletal > 1.3.1 Arm > Flashcards

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
What is the origin of the lateral and medial head of the tricep brachii?
Posterior of the humerus
26
What is the insertion point of the tricep brachii?
Inserts onto the olecranon process of the ulna
27
What is the function of the tricep brachii?
Extends the arm
28
What major artery starts from the inferior border of the teres major?
29
What is the first branch of the brachial artery?
Deep artery of the arm
30
The deep artery of the arm accompanies?
The radial nerve
31
What are some clinical correlations associated with the brachial artery?
32
What are the important superficial veins of the arm?
Cephalic, Basilic, and Median cubital
33
What cephalic vein lies in the _________ and passes through the _______ eventually emptying in the \_\_\_\_\_\_?
Deltopectoral groove; deltopectoral triangle; axillary vein
34
The basilic vein lies on the _____ side of the arm and merges with veins accompanying the _____ to form the \_\_\_\_\_?
Medial; Brachial artery; axillary vein
35
What median cubital vein is?
An anastamotic connection of the cephalic and basilic vein
36
The musculocutaneous nerve is from what cord?
Lateral cord of the brachial plexus
37
The musculocutaneous nerve pierces what muscle?
Coracobrachialis
38
The musculocutaneous nerve innervates all of the?
Anterior flexors
39
40
What are the characteristics of a musculocutaneous nerve injury?
41
The Radial Nerve originates from the?
Posterior cord of the brachial plexus
42
The radial nerve passes around the _____ in the ______ with the \_\_\_\_\_?
Humerus; radial groove; deep artery
43
The deep branch of the radial nerve innervates?
Supplies forearm muscles and the elbow joint
44
The superficial branch of the radial nerve supplies?
Cutaneous Supplies the skin of the dorsum of the hand and digits
45
What are the characteristics of a radial nerve injury?
46
Wrist drop sign is indicitive of?
Radial Nerve injury
47
The median nerve comes from?
The union of medial and lateral cord
48
The median nerve innervates?
The elbow joint and has no branches in the arm
49
The ulnar nerve comes from?
The medial cord of the BP
50
The ulnar nerve pierces what in the middle of the arm?
The medial intermuscular septum
51
At the distal end the ulnar nerve passes posterior to the ______ and medial to ________ to enter the forearm?
Posterior to the medial epicondyle; medial to olecranon
52
Does the ulnar nerve have branches in the arm?
NO
53
What is pronator syndrome?
54
What is a sign for pronator syndrome?
The Pope's Sign
55
What is Cubital Tunnel Syndrome?
56
What is ulnar nerve injury?
57
What are the contents of the cubital fossa?
Terminal portion of the brachial artery Radial and ulnar arteries Biceps Brachii tendon Median nerve Radial nerve branches
58
What are some common venipuncture locations?

A - Musculoskeletal (53 decks)

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