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03. MSK Test 1 > 10. Upper Extremity Myology > Flashcards

10. Upper Extremity Myology Flashcards

1
Q

For the Pectoralis Major M.

What are the attachments?

A

Sheath of Rectus Abdominis, Clavical, Sternum

goes to

Lateral Edge of the Intertubercular Groove of Humerus

(covers the long head of Biceps Brachii M)

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2
Q

For the Pectoralis Major M.

What are the major actions?

A

Adduct and Medially Rotate Humerus

Protract and Depress Scapula

Flex Humerus

Return Humerus from flexed to neutral

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3
Q

For the Pectoralis Major M.

What is the innervation and artery?

A

Nerve: Lateral and Medial Pectoral Nerve

Artery: Pectoral Branch of the Thoracoacromial Trunk

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4
Q

For Pectoralis Minor M.

What are the attachments?

A

Upper Ribs to the Coracoid Process of the Scapula

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5
Q

For Pectoralis Minor M.

What is the action?

A

Stabilizes the Scapula by holding it to the Thoracic Wall.

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6
Q

For Pectoralis Minor M.

What is the innervation and artery?

A

Nerve: Medal Pectoral Nerve

(It gets pity innervated on the way to the Pectoralis Major M.)

Artery: Pectoral Branch of the Throacoacromial Trunk

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7
Q

For the Subclavius M.

What are the attachments?

A

First rib

to

Inferior aspect of the Clavicle

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8
Q

For the Subclavius M.

What is the Action?

A

Depresses the Clavicle

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9
Q

For the Subclavius M.

What is the innervation and artery?

A

Nerve: Nerve to the Subclavius

Artery: Clavicular Branch of the Thoracoacromial Trunk

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10
Q

For the Serratus Anterior M.

What are the attachments?

A

Lateral Aspect of the Ribs

to

Deep surface of the medial border of the Scapula.

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11
Q

For the Serratus Anterior M.

What are the actions?

A

Protraction of the Scapula

(Boxer’s Serratus Anterior Muscles are buff for this reason)

Superior Rotation of the Glenoid Cavity

(Pulls the medial border down towards the ribs - lateral end goes up)

Stabalizes the Scapula by pulling it to the Thoracic Wall

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12
Q

For the Serratus Anterior M.

What is the innervation and artery?

A

Nerve: Long Thoracic Nerve

Artery: Lateral Thoracic Artery

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13
Q

What might damage to the Serratus Anterior or Long Thoracic Nerve cause?

What motion does this prevent?

A

“Winging” of the Scapula

The Scapula is no longer Stabalized against the Thoracic Wall

Abduction of the Upper Extremity beyond the Horizontal Position

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14
Q

For the Deltoid M.

What are the Attachments?

A

Clavicle, Acromion of the Scapula, and Deltoid Tubercle (on the spine) of the Scapula

to

Deltoid Tuberosity of the Humerus

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15
Q

For the Deltoid M.

What are the actions?

A

Anterior part: Flex and Internal Rotation of the Humerus

Middle Part / Whole Muscle: Abduction of the Humerus

Posterior Part: Extension of the Shoulder and External Rotation of the Humerus

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16
Q

For the Deltoid M.

What is the innervation and artery?

A

Nerve: Axillary Nerve

Artery: Posterior Circumflex Humeral Artery

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17
Q

For the Subscapularis M.

What are the attachments?

A

Medial Aspect of its Subscapular Fossa

to

Lesser Tubercle of the Humerus

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18
Q

For the Subscapularis M.

What are its actions?

A

Medial Rotation of the Humerus

Adduction of the Humerus

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19
Q

For the Subscapularis M.

What is the innervation and artery?

A

Nerve: Upper and Lower Subscapular Nerve

Artery: Subscapular Artery

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20
Q

For the Supraspinatus M.

What are the attachments?

A

Supraspinous Fossa of the Scapula

to

Greater Humeral Tubercle (running over the superior-most part of the Humerus)

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21
Q

For the Supraspinatus M.

What is the action?

A

Abduction of the Humerus

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22
Q

For the Supraspinatus M.

What is the innervation and artery?

A

Nerve: Suprascapular Nerve

Artery: Suprascapular Artery

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23
Q

For the Infraspinatus M.

What are the attachments?

A

Medial border of its Infraspinous Fossa

Greater Tubercle of the Humerus

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24
Q

For the Infraspinatus M.

What is its action?

A

External Rotation of the Humerus

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25
For the Infraspinatus M. What is the innervation and artery?
Nerve: Suprascapular Nerve Artery: Suprascapular Artery and Circumflex Scapular Artery *(The Circumflex Scapular Artery comes _around_ the lateral border of the scapula and heads superiorly and medially)*
26
For the Teres Major M. What are the attachments?
Posterior aspect of the Inferior Angle of the Scapula to Intertubercular groove (**Front** of the Humerus)
27
For the Teres Major M. What are the actions?
Internal rotation of the Humerus (Pulls the front of the Humerus medially) Adduction of the Humerus
28
For the Teres Major M. What is the innervation and artery?
Nerve: Lower Subscapular Nerve Artery: Subscapular Artery and Circumflex Scapular Artery
29
What are the four rotator cuff muscles?
Supraspinatus M. Infraspinatus M. Teres Minor M. Subscapularis M.
30
For the Triangular Space What Muscles make up the border? What can be found within?
Borders: Teres Major, Teres Minor, Long Head of Triceps Brachii M. Contains: Circumflex Scapular Artery and Vein
31
For the Quadrangular Space What Muscles make up the four borders? What can be found within?
Borders: Long and Lateral Head of the Triceps Brachii M., Teres Major M. Teres Minor M. Contains: Axillary Artery, Posterior Circumflex Humeral Artery, Posterior Circumflex Humeral Vein *(Contents are headed to the Deltoid Muscle, so if you remember the Deltoid M.'s nerve and artery, there you go)*
32
For the Triangular Interval What Muscles make up its three borders? What does it contain?
Borders: Long and Lateral Head of the Triceps Brachii, Teres Major M. Contains: Deep Brachial Artery and Vein, Radial Nerve
33
What part of the Biceps Brachii M. covers the Pronator Teres M.?
The Bicipital Aponeurosis
34
For the Biceps Brachii M. What are the attachments?
Long Head to the Supraglenoid Tubercle Short Head to the Coracoid Process Both insert on the Radial Tuberosity *The Biceps Brachii skips the Humerus entirely*
35
For the Biceps Brachii M. What are the Actions?
Flexes Shoulder and Elbow Supinates *Remember that these Muscles Flex / Extend the Joints they cross*
36
For Biceps Brachii M. What is the innervation?
Musculocutaneous Nerve
37
For the Coracobrachialis Muscle What are the attachments?
Coracoid Process Medial Aspect of the Humeral Body
38
For the Coracobrachialis Muscle What are the actions?
Flexion and adduction of the Shoulder
39
For the Coracobrachialis Muscle What is the innervation?
Musculocutaneous
40
For the Brachialis Muscle What are the attachments?
Distal half of the Humerus Ulnar Tuberosity / Coranoid Process
41
For the Brachialis Muscle What is the action?
Flexion of the Elbow ## Footnote *The Bicep cannot flex a pronated Elbow. The Brachialis does that.*
42
For the Brachialis Muscle What is the innervation?
Musculocutaneous
43
For the Triceps Brachii M. Where are the attachments?
Long Head to the Infraglenoid Tubercle Lateral and Medial Head come from the Humerus (and do not cross the shoulder joint) All insert into the Olecranon of the Ulna
44
For the Triceps Brachii M. What is the action?
Extending the Forearm
45
For Triceps Brachii Muscle What is the innervation?
Radial Nerve
46
For the Anconius Muscle What are the attachments?
Lateral Humeral Epicondyle Olecranon *(Even though it attaches to the Lateral Humeral Epicondyle like an extensor and exists entirely in the forearm, it's considered a posterior compartment Brachial Muscle for this class. This may be because some people consider it to be a continuation of Triceps Brachii M.)*
47
For the Anconius Muscle What is the action?
Extends the Elbow
48
For the Anconius Muscle What is the innervation?
Radial Nerve
49
For the Pronator Teres M. What are the attachements?
Humeral Head to the Medial Epicondyle of the Humerus Ulnar Head to the Coranoid Process of the Ulna Both insert into the lateral aspect of the Radius
50
For the Pronator Teres M. What is the action?
Pronation of the Elbow
51
For the Pronator Teres M. What is the innervation?
Median Nerve
52
For the Flexor Carpi Radialis M. What are the attachments?
Medial Humeral Epicondyle Metacarpal of the Second Digit
53
For the Flexor Carpi Radialis M. What are the actions?
Flex the Elbow and Wrist Abduct the Wrist
54
For the Flexor Carpi Radialis M. What is the innervation?
Median Nerve
55
For the Palmaris Longus Muscle What are the attachments?
Medial Humeral Epicondyle Palmar Aponeurosis
56
For the Palmaris Longus Muscle What is the action (if present)?
Flexes the Elbow and Wrist
57
For the Palmaris Longus Muscle What is the innervation?
Median Nerve
58
For the Flexor Carpi Ulnaris Muscle What are the attachements?
Medial Humeral Epicondyle Pisiform Bone, Hook of the Hamate, 5th Metacarpal *(Inserts everywhere in the medial Wrist)*
59
For the Flexor Carpi Ulnaris Muscle What are the actions?
Flexion of the Elbow and Wrist Adduction of the Wrist
60
For the Flexor Carpi Ulnaris Muscle What is the innervation?
Ulnar Nerve
61
For the Flexor Digitorum Superficialis Muscle What are the attachements?
Medial Humeral Epicondyle, Coronoid Process of the Ulna, superior portion of the Radius Inserts in the **intermediate** Phalanges of digits 2-5 in a forked tendon.
62
For the Flexor Digitorum Superficialis Muscle What are the actions?
Flexion of the joints it crosses: Proximal Interphalangeal, Metacarpophalangeal, Carpometacarpal, Wrist, Elbow
63
For the Flexor Digitorum Superficialis Muscle What is the innervation?
Median Nerve
64
For the Flexor Digitorum Profundus Muscle What are the attachments?
Proximal Ulna and Interosseous Membrane **Distal** Phalanges of Digits 2-5
65
For the Flexor Digitorum Profundus Muscle What are the actions?
Flex all of the Muscles of the Hand and Wrist ## Footnote *Does not flex the Elbow*
66
For the Flexor Digitorum Profundus Muscle What is the innervation?
Medial Portion: Ulnar Nerve Lateral portion: Median Nerve *Its medial portion is directly underneath the ulnar nerve, so it kind of gets accidentally innervated.*
67
For the Flexor Pollicis Longus Muscle What are the attachments?
Radius and Interosseous Membrane Distal Phalanx of the Thumb
68
For the Flexor Pollicis Longus Muscle What is the action?
Flexes the Thumb
69
For the Flexor Pollicus Longus Muscle What is the innervation?
Anterior Interosseous Nerve | (branch of the Median Nerve)
70
For the Pronator Quadratus Muscle What are the attachments?
Distal Ulna to Distal Radius
71
For the Pronator Quadratus Muscle What is the action?
Pronation Holds the Ulna and Radius together
72
For the Pronator Quadratus Muscle What is the innervation?
Anterior Interosseous Nerve
73
What two Antebrachial Extensors are innervated by the Radial Nerve when it is named as such? (before it changes names)
Brachioradialis M. Extensor Carpi Radialis Longus M.
74
What two Antebrachial Extensors are innervated by the "Deep" Radial Nerve?
Extensor Carpi Radialis Brevis M. Supinator M.
75
What three Antibrachial Extensors are innervated by the Posterior Interosseous Nerve?
Extensor Digitorum M. Extensor Digiti Minimi M. Extensor Carpi Ulnaris M.
76
For the Brachioradialis Muscle What are the attachments?
Lateral Supracondylar Ridge Radius
77
For the Brachioradialis Muscle What is the action?
Flexes the Elbow when the Arm is "Mid-Pronated" (When the thumb is facing up)
78
For the Brachioradialis Muscle What is the innervation?
Radial Nerve
79
For the Extensor Carpi Radialis Longus M. What are the attachments?
Lateral Humeral Supracondylar Ridge Metacarpal of the 2nd Digit
80
For the Extensor Carpi Radialis Longus M. What is the action?
Extension and ABduction of the Wrist
81
For the Extensor Carpi Radialis Longus M. What is the innervation?
Radial Nerve
82
For Extensor Carpi Radialis Brevis M. What are the attachments?
Lateral Epicondyle of the Humerus Base of the 3rd Metacarpal
83
For Extensor Carpi Radialis Brevis M. What are the actions?
Extension and ABduction of the Wrist
84
For Extensor Carpi Radialis Brevis M. What is the innervation?
**Deep** Radial Nerve
85
For the Extensor Digitorum M. What are the attachments?
Lateral Humeral Epicondyle Extensor Hood
86
For the Extensor Digitorum M. What is the action?
Extension of the 2nd-5th Phalanges at every joint.
87
For the Extensor Digitorum M. What is the innervation?
Posterior Interossious Nerve | (comes from the Radial Nerve)
88
When does the Deep Radial Nerve become the Posterior Interosseous Nerve?
After it ducks under the Supinator and emerges again.
89
For the Extensor Digiti Minimi M. What are the attachments?
Lateral Epicondyle of the Humerus Extensor Hood of 5th Digit
90
For the Extensor Digiti Minimi M. What is the action?
Extends the 5th Digit
91
For the Extensor Digiti Minimi M. What is the innervation?
Posterior Interosseous Nerve
92
For the Extensor Carpi Ulnaris M. What are the attachements?
Lateral Humeral Epicondyle
93
For the Extensor Carpi Ulnaris M. What is the action?
Extend and ADduct the Wrist
94
For the Extensor Carpi Ulnaris M. What is the innervation?
Posterior Interosseous Nerve (a branch of the Radial Nerve) *This is tough because it has Ulnar in the name, but remember that exception is only true on the Flexor side. ALL of the Extensors of the arm are innervated by the Radial Nerve, or a branch thereof.*
95
For the Supinator Muscle What are the Attachments?
Lateral Humeral Epicondyle, Lateral Collateral Ligament of the Elbow, and Supinator Crest of the Ulna. Proximal Radius
96
For the Supinator Muscle What is the innervation?
Deep Radial Nerve
97
For the Supinator Muscle What is the innervation?
Deep Radial Nerve
98
For the Extensor Indicis M. What are the attachments?
Distal Ulna to the Extensor Hood
99
For the Extensor Indicis M. What is the action?
Extension of the 2nd Digit (Index Finger)
100
For the Extensor Indicis M. What is the innervation?
Posterior Interosseous Nerve
101
For Abductor Pollicis Longus M. What are the attachements?
Ulna, Radius, Interosseous Membrane Base of the 1st Digit's Metacarpal
102
For Abductor Pollicis Longus M. What is the action?
Abduction of the Thumb **and Wrist**
103
For Abductor Pollicis Longus M. What is the innervation?
Posterior Interosseous Nerve (This is an outcropping muscle, but they are innervated like the extensors)
104
For Extensor Pollicis Longus M. What are the attachments? What is interesting about the Tendon for this Muscle?
Ulna and Interosseous Membrane Base of the **Distal Phalanx** of the thumb. *Extensor Pollicis Longus M. goes to the Distal Phalanx, Extensor Pollicis Brevis M. goes to the Proximal Phalanx* The Tendon wraps around the **Dorsal Radial Tubercle** and uses it as a pulley.
105
For Extensor Pollicis Longus M. What is the action?
**Extension** of the Thumb, **Abduction** of the Wrist
106
For Extensor Pollicis Longus M. What is the innervation?
Posterior Interosseous Nerve
107
For Extensor Pollicis Brevis M. What are the attachments?
Radius and Interosseous Membrane Proximal Phalanx of the Thumb
108
For Extensor Pollicis Brevis M. What are the actions?
Extends the Thumb, Abducts the Wrist
109
For Extensor Pollicis Brevis M. What is the innervation?
Posterior Interosseous Nerve
110
What are the borders for the Anatomical Snuff Box?
Lateral: Extensor Pollicis Brevis Tendon (and Abductor Pollicis Longus, sort of) Medial: Extensor Pollicis Longus Tendon *The shorter Muscle has to be closer to the Thumb (lateral side)*
111
For the Abductor Pollicis Brevis M. What are the attachments?
Carpals and Flexor Retinaculum Base of the Proximal Phalanx of the 1st Digit
112
For the Abductor Pollicis Brevis M. What is the action?
Abducts the Thumb
113
For the Abductor Pollicis Brevis M. What is the innervation?
Recurrant Branch of the Median Nerve ## Footnote *This is the A in "1/2 LOAF 1/2"*
114
For the Flexor Pollicis Brevis M. What are the attachments?
Carpals and Transverse Carpal Ligament
115
For the Flexor Pollicis Brevis M. What is the action?
Flexes the Metacarpal and the **Proximal Phalanx** of the Thumb
116
For the Flexor Pollicis Brevis M. What is the innervation?
Superficial Head: Recurrent Branch of the Median Nerve Deep Head: Deep Ulnar Nerve *This is the "F 1/2" in "1/2 LOAF 1/2"*
117
For Opponens Pollicis M. What are the attachments?
Carpals and the Flexor Retinaculum Metacarpal of the 1st Digit
118
For Opponens Pollicis M. What is the action?
Opposition of the Thumb
119
For Opponens Pollicis M. What is the innervation?
Recurrent Branch of the Median Nerve ## Footnote *This is the O in 1/2 LOAF 1/2*
120
For Adductor Pollicis M. What are the attachments?
* Oblique Head * Base of the Third Metacarpal to the Base of the Proximal Phalanx * Transverse Head * Body of the Third Metacarpal to the Base of the Proximal Phalanx
121
For Adductor Pollicis M. What is the action?
Adduction of the Pollux
122
For Adductor Pollicis M. What is the innervation?
Deep Ulnar Nerve
123
A superficial injury to the Thenar Eminence can damage what nerve? What does this impede?
Recurrant Branch of the Median Nerve Many of the Thumb Muscles
124
For the Abductor Digiti Minimi M. What are the attachments?
Pisiform Bone Base of the Proximal Phalanx of the 5th Digit
125
For the Abductor Digiti Minimi M. What is the action?
Abduction of the 5th Digit
126
For the Abductor Digiti Minimi M. What is the innervation?
Deep Ulnar Nerve
127
For the Flexor Digiti Minimi M. What are the attachments?
Hook of the Hamate and Flexor Retinaculum Base of the Proximal Phalanx of the 5th Digit
128
For the Flexor Digiti Minimi M. What is the action?
Flexes the 5th Digit
129
For the Flexor Digiti Minimi M. What is the innervation?
Deep Ulnar Nerve
130
For the Opponens Digiti Minimi M. What is the attachment?
Hook of the Hamate and Flexor Retinaculum Middle of the 5th Metacarpal
131
For the Opponens Digiti Minimi M. What is the action?
Opposition of the 5th Digit
132
For the Opponens Digiti Minimi M. What is the innervation
Deep Ulnar Nerve
133
For the Lumbrical Muscles What are their attachments?
Originate at the **Flexor Digitorum Profundus Tendon** Insert at the Extensor Expansion *He made a big deal about these originating at a tendon in class*
134
For the Lumbrical Muscles What is their action?
Pinching with extended Interphalangial Joints, but flexed Metacarpophalangeal Joints
135
For the Lumbrical Muscles What are their innervations?
1st and 2nd: Recurrant Branch of the Median Nerve 3rd and 4th: Deep Ulnar Nerve *This is the 1/2 L, in 1/2 LOAF 1/2*
136
For the Dorsal Interosseous Muscles Where do the attach? How many of these do we have?
Go between a given digit, and the digit closer to the middle finger. *Eg. 1st Digit to 2nd Digit, but 5th Digit to 4th Digit* Four. The **2nd** and **4th** have one. The **3rd** Digit abducts both ways and has two. *The thumb and pinky have their own abductors*
137
For the Dorsal Interosseous Muscles What is their action?
Abduction of the fingers, except 1st and 5th ## Footnote *DAB Dorsals ABduct*
138
For the Dorsal Interosseous Muscles What is the innervation?
Deep Ulnar Nerve
139
For the Palmar Interosseous Muscles What digits have these Muscles?
The First, Fourth, and Fifth Digits. The Thumb has its own Adductors Pollicis, and the Third Digit doesn't adduct, it can only abduct in either direction.

03. MSK Test 1 (18 decks)

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