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-Anatomy > Upper limb - Arm > Flashcards

Upper limb - Arm Flashcards

1
Q

Where does the short head of the biceps brachii tendon insert?

A

Radial tuberosity of the radius

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2
Q

What joints do the biceps brachii act on?

A

Shoulder
Elbow
Radio-ulnar joints

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3
Q

Where does the short head of the biceps brachii arise?

A

Coracoid process

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4
Q

Where does the long head of the biceps brachii arise?

A

Supraglenoid tubercle of the scapula

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5
Q

What muscle arises with the short head of the biceps brachii?

A

Coracobrachialis

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6
Q

What is the action of the biceps brachii on the elbow joint?

A

Flexion

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7
Q

What is the action of the biceps brachii on the shoulder joint?

A

Flexion

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8
Q

What is the action of the biceps brachii on the radio-ulnar joint?

A

Powerful supinator

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9
Q

What attaches to the greater tubercle of the humerus?

A

3 of the rotator cuff muscles
Supraspinatous
Infraspinatous
Teres minor

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10
Q

What runs along the intertubercular sulcus?

A

Tendon of the biceps brachii

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11
Q

What lies in the radial groove of the humerus?

A

Radial nerve

Profunda brachii artery

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12
Q

What attaches to the posterior aspect of the humeral shaft?

A

Medial head of triceps

Lateral head of triceps

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13
Q

What attaches the anterior aspect of the humeral shaft?

A

Coracobrachialis
Deltoid
Brachialis
Brachioradialis

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14
Q

What nerve innervates the biceps brachii?

A

Musculocutaneous nerve

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15
Q

What nerve segments are responsiple for the innervation of biceps brachii?

A

C5+6

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16
Q

What cord of the brachial plexus does the musculocutaneous nerve arise from?

A

Lateral

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17
Q

What is the insertion o the coracobrachialis?

A

Medial margin of the humerus in the midline

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18
Q

What is the innervation of the coracobrachialis?

A

musculocutaneous nerve

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19
Q

What are the actions of the coracobrachialis on the shoulder joint?

A

Flexion and adduction

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20
Q

Where does the brachialis arise?

A

Distal half of the humerus

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21
Q

Where does the brachialis insert?

A

Coronoid process of the ulnar

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22
Q

What are the acions of the brachialis?

A

Flexion of the ulnar

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23
Q

What is the innervation of the brachialis?

A

Musculocutaneous nerve

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24
Q

What is the nerve value of the musculocutaneous nerve?

A

C5-C7

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25
Which nerve innervates the lateral compartment of the arm?
Musculocutaneous nerve
26
What three muscles are supplied by the musculocutaneous nerve?
Biceps brachii Coracobrachialis Brachialis
27
Where does the musculocutaneous nerve provide sensation for?
Lateral part of the arm
28
What two cords does the median nerve arise from?
Lateral and medial cords of the brachial plexus
29
What muscles does the median nerve supply?
Pronator teres Flexor carpi radialis Palmaris longus Flexor digitorum superficialis Thenar muscles Lateral 2 lumbricals
30
What muscles make up the anterior (flexor) compartment of the arm?
Biceps brachii Coracobrachialis Brachialis
31
What is the arterial supply for the anterior compartment of the arm?
Muscular bracnhes of the brachial artery
32
How does the musculocutaneous nerve enter the arm?
By perforating the coracobrachialis berfore descending between the biceps and brachialis
33
What does the musculocutaneous nerve become?
Lateral cutaneous nerve of the forearm
34
What muscles form the posterior (extensor) compartment of the arm?
Triceps brachii | Anconeus
35
What is the arterial supply to the biceps brachii?
Profunda brachii artery
36
What are the three triceps heads?
Long Lateral Medial
37
Where does the medial head of the triceps brachii originate?
Inferior to the radial groove on the humerus
38
Where does the Lateral Head of the Triceps Brachii originate?
Superior to the radial groove on the humerus
39
Where does the Long Head of the Triceps Brachii originate?
Infraglenoid tubercle
40
Where does the converged triceps tendon attach?
Olecranon of ulna
41
What is the action of the triceps brachii?
Extension of elbow
42
What is the innervation of the triceps brachii?
Radial nerve
43
What is the innervation of the anconeus?
Radial nerve
44
What is the characterisitc sign of a radial nerve injury?
Wrist drop
45
What are the three common sites where the three arm nerves can be damaged due to fractures?
Radial nerve - radial groove Ulnar nerve - medial epicondyle Axillary nerve - surgical neck
46
What artery is found in the cubital fossa?
Brachial artery
47
What forms the base of the cubital fossa?
An imaginary line between the two epicondyles
48
What forms the medial border of the cubital fossa?
Pronator teres
49
What forms the lateral border of the cubital fossa?
brachioradialis
50
What are the contents of the cubital fossa?
Radial nerve (deep branch) (under brachioradialis) Median nerve Biceps tendon Brachial artery
51
What are the segemntal root values for the radial nerve?
C6-C8
52
What type of joint is the elbow?
Synovial hinge
53
What are the three main ligaments of the elbow joint?
Ulnar collateral Radial collateral Annular ligament
54
What are the attachments of the medial (ulnar) collateral ligaments?
Medial epicondyle | Coronoid or olecranon processes of ulnar
55
What are the three clinically important bursae found in the elbow?
Intratendinous Subtendinous Subcutaneous
56
Where is the intratendinous bursa of the elbow found?
Within the triceps brachii tendon
57
Where is the subtendinous bursa of the elbow found?
between the olecranon and the triceps brachii tendon
58
Where is the subcutaneous bursa of the elbow found?
Between the olecranon and overlying connective tissue
59
What are the attachments of the lateral (radial) collateral ligament?
Lateral condyle | Annular ligament
60
What ligament holds te head of the radius?
Annular liagment
61
What muscles cause extension at the elbow joint?
Triceps brachii Anoconeus (muscles of the posterior arm compartment)
62
What muscles cause flexion at the elbow joint?
Biceps brachii Brachioradialis Brachilias (Muscles of anterior compartment of arm + brachioradialis)
63
What is the nerve supply to the elbow
Anterior: Radial nerve Median nerve Musculocutaneous nerve Posterior Ulnar nerve

-Anatomy (34 decks)

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