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Arm Flashcards

(99 cards)

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1
Q

The arm is divided into anterior and posterior compartments by:

A

Intermuscular septa

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2
Q

Intermuscular septa are attached to:

A

Medial and lateral supracondylar ridges of the humerus

They are continuous with the deep fascia

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3
Q

3 key muscles of anterior compartment of arm

A

Coracobrachialis
Biceps brachii
Brachialis

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4
Q

Musculocutaneous nerve positon relative to anterior arm muscles

A

Pierces coracobrachialis

Lies on brachialis underneath biceps brachii

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5
Q

3 pectoral girdle to arm muscles

A

Deltoid
Teres major
Coracobrachialis

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6
Q

4 rotator cuff muscles

A

Supraspinatus
Infraspinatus
Subscapularis
Teres minor

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7
Q

2 pectoral girdle to forearm muscles

A

Biceps brachii

Triceps brachii - long head

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8
Q

2 arm to forearm muscles

A

Brachialis

Triceps brachii - lateral and medial heads

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9
Q

3 parts of deltoid

A

Anterior fibres - unipennate
Middle fibres - multipennate
Posterior fibres - unipennate

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10
Q

Deltoid origin

A

Anatomical horseshoe

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11
Q

Deltoid insertion

A

Deltoid tuberosity

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12
Q

Anterior fibres of deltoid functions

A

Flexes shoulder
Internally rotates arm
Abducts and adducts arm (with posterior fibres)

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13
Q

Middle fibres of deltoid function

A

Abducts arm

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14
Q

Posterior fibres of deltoid functions

A

Extends shoulder
Externally rotates arm
Abducts and adducts arm (with anterior fibres)

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15
Q

Deltoid innervation

A

Axillary nerve

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16
Q

Teres major origin

A

Inferior angle and lateral border of scapula

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17
Q

Teres major insertion

A

Medial lip of intertubercular groove

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18
Q

Teres major innervation

A

Lower subscapular nerve

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19
Q

Teres major functions

A

Adducts shoulder
Extends shoulder
Internally rotates arm

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20
Q

Biceps brachii long head origin

A

Supraglenoid tubercle

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21
Q

Biceps brachii short head origin

A

Coracoid process

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22
Q

Biceps brachii insertion

A

Bicipital aponeurosis and radial tuberosity

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23
Q

Biceps brachii innervation

A

Musculocutaneous nerve

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24
Q

Biceps brachii functions

A

Supinator
Flexes elbow
Flexes shoulder

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25
Brachialis origin
Anterior surface of distal humerus including intermuscular septa
26
Brachialis insertion
Ulnar tuberosity
27
Brachialis innervation
Musculocutaneous nerve
28
Brachialis function
Flexes elbow
29
Coracobrachialis origin
Coracoid process
30
Coracobrachialis insertion
Medial side of humerus opposite deltoid tuberosity
31
Coracobrachialis innervation
Musculocutaneous nerve
32
Coracobrachialis functions
Adducts shoulder | Flexes shoulder
33
Triceps brachii long head origin
Infraglenoid tubercle
34
Triceps brachii lateral head origin
Above radial groove
35
Triceps brachii medial head origin
Below radial groove
36
Triceps brachii insertion
Olecranon
37
Triceps brachii innervation
Radial nerve
38
Triceps brachii functions
Extends elbow Adducts shoulder Extends shoulder
39
Triceps brachii blood supply
Branches of the profunda brachii artery
40
The quadrangular space is found:
On the lateral side of the long head of triceps
41
Borders of quadrangular space
Triceps long head medially Humerus laterally Teres minor superiorly Teres major inferiorly
42
Borders of the triangular space
Triceps long head laterally Teres minor superiorly Teres major inferiorly
43
2 things that pass through the quadrangular space
Axillary nerve | Posterior humeral circumflex artery
44
Key thing that passes through the triangular space
A branch of the circumflex scapular artery
45
Borders of the triangular interval
Teres major superiorly Lateral head of triceps laterally Long head of triceps medially
46
Cubital fossa boundaries
Medial: pronator teres Lateral: brachioradialis Floor: Brachialis and supinator Roof: deep fascia of forearm
47
In the cubital fossa, the brachial artery divides into:
Radial and ulnar arteries
48
The anatomical neck of the humerus separates the head from:
The greater and lesser tubercles
49
Key extracapsular ligament of the shoulder
Coracoacromial ligament
50
The coracoacromial ligament forms the:
Coracoacromial arch between the coracoid process and the acromion
51
Coracoacromial ligament purpose
Prevents superior dislocation of the glenohumeral joint
52
3 key capsular ligaments of the shoulder
Coracohumeral Transverse humeral Glenohumeral
53
Coracohumeral ligament
Strong flattened band that suspends the arm and superiorly reinforces the shoulder joint capsule
54
Transverse humeral ligament
Spans between greater and lesser tubercle holding the tendon of the long head of biceps in position as it emerges from the capsule
55
Glenohumeral ligaments
Three weak thichenings on the anterior and interior aspects of the capsule
56
3 key bursae of the shoulder
Subscapular Subacromial Subdeltoid
57
Subscapular bursa location
Under the coracoid process
58
Subscapular bursa purpose
Protects subscapularis from the underlying ridge of the glenoid fossa during contraction
59
Subacromial bursa location
Separates overlying coracoacromial arch from supraspinatus and infraspinatus tendons as they pass to their insertions on the facets of the greater tubercle
60
The subdeltoid bursa is a _______ _________ of the subacromial bursa
Lateral continuation
61
Subscapularis origin
Subscapular fossa
62
Subscapularis insertion
Lesser tubercle
63
Subscapularis innervation
Upper and lower subscapular nerves
64
Subscapularis function
Internally rotates arm
65
Supraspinatus origin
Supraspinous fossa
66
Supraspinatus insertion
Superior facet of greater tubercle
67
Infraspinatus origin
Infraspinous fossa
68
Infraspinatus insertion
Middle facet of greater tubercle
69
Teres minor origin
Lateral border of scapula
70
Teres minor insertion
Inferior facet of greater tubercle
71
Supraspinatus innervation
Suprascapular nerve
72
Infraspinatus innervation
Suprascapular nerve
73
Teres minor innervation
Axillary nerve
74
Supraspinatus function
Abducts arm
75
Infraspinatus function
Externally rotates arm
76
Teres minor function
Externally rotates arm
77
Near the bottom of the humerus are two:
Epicondyles - medial and lateral
78
At the bottom lateral side of the humerus is the:
Capitalum
79
At the bottom medial side of the humerus is the:
Trochlea
80
The capitalum articulates with the:
Head of the radius
81
The trochlea articulates with the:
Trochlear notch of the ulna
82
3 joints of the elbow
Humero-ulnar Humero-radial Radio-ulnar
83
Humero-ulnar joint components
Coronoid fossa of humerus Trochlea Trochlear notch Coronoid process of ulna
84
Humero-radial joint components
Lateral epicondyle Capitalum Superior surface of radius
85
Radio-ulnar joint components
Head of radius | Radial notch on ulna
86
3 key ligaments of the elbow
Triangular ulnar Radial Annular
87
Triangular ulnar ligament connections
Apex at medial epicondyle | Base at upper medial aspect of ulna
88
Radial ligament connections
Lateral epicondyle to annular ligament
89
Annular ligament connections
Edges of radial notch of ulna, surrounds head of radius
90
2 arm abductors
Supraspinatus | Middle fibres of deltoid
91
7 arm adductors
``` Posterior fibres of deltoid Anterior fibres of deltoid Pectoralis major Long head of triceps Coracobrachialis Teres major Latissimus dorsi ```
92
4 arm flexors
Anterior fibres of deltoid Clavicular head of pectoralis major Coracobrachialis Biceps brachii
93
5 arm extensors
``` Posterior fibres of deltoid Teres major Latissimus dorsi Long head of triceps Sternocostal portion of pectoralis major ```
94
5 internal arm rotators
``` Pectoralis major Anterior fibres of deltoid Subscapularis Latissimus dorsi Teres major ```
95
3 external arm rotators
Posterior fibres of deltoid Infraspinatus Teres minor
96
Olecranon
Curvy bone eminence of the ulna forming the pointed portion of the elbow
97
Anconeus origin
Lateral epicondyle
98
Anconeus insertion
Olecranon
99
Anconeus innervation
Radial nerve

Musculoskeletal (9 decks)

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