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MSK: Gross Anatomy Exam 1 > (7) Upper Extremity Myology > Flashcards

(7) Upper Extremity Myology Flashcards

(104 cards)

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1
Q

Thoracoappendicular (Anterior Axioappendicular) Muscles

What are the (4)?

A
  1. Pectoralis Major M.
  2. Pectoralis Minor M.
  3. Subclavius M.
  4. Serratus Anterior M.
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2
Q

What muscle is this?

A

Pectoralis Major M.

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3
Q

Thoracoappendicular Muscles

Pectoralis Major M.

Origin?

A

Clavicular Head, Medial 1/2 of clavicle

Sternum

Costal Cartilages 1-6

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4
Q

Thoracoappendicular Muscles

Pectoralis Major M.

Insertion?

A

Lateral edge intertubercular groove of

HUMERUS

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5
Q

Thoracoappendicular Muscles

Pectoralis Major M.

Action?

A

ADduct and Medially rotate the HUMERUS

Protracts/retracts the SCAPULA

Clavicular head flexes the HUMERUS

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6
Q

Thoracoappendicular Muscles

Pectoralis Major M.

Innervation?

A

Lateral and Medial Pectoral N.

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7
Q

What is this?

A

Pectoralis Minor M.

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8
Q

Thoracoappendicular Muscles

Pectoralis Minor M.

Origin?

A

Medial aspects of ribs 3-5

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9
Q

Thoracoappendicular Muscles

Pectoralis Minor M.

Insertion?

A

Coracoid process of Scapula

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10
Q

Thoracoappendicular Muscles

Pectoralis Minor M.

Action?

A

STABILIZES the Scapula

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11
Q

Thoracoappendicular Muscles

Pectoralis Minor M.

Innervation?

A

Medial Pectoral N.

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12
Q

What is this?

A

Subclavius M.

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13
Q

Thoracoappendicular Muscles

Subclavius M.

Origin?

A

Upper border 1st rib and 1st costal cartilage

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14
Q

Thoracoappendicular Muscles

Subclavius M.

Insertion?

A

Inferior aspect of clavicle

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15
Q

Thoracoappendicular Muscles

Subclavius M.

Action?

A

Stabilize the CLAVICLE

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16
Q

Thoracoappendicular Muscles

Subclavius M.

Innervation?

A

Nerve to the Subclavius M. (C5-6)

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17
Q

What is this?

A

Serratus Anterior M.

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18
Q

Thoracoappendicular Muscles

Serratus Anterior M.

Origin?

A

Lateral external surface of ribs 1-8

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19
Q

Thoracoappendicular Muscles

Serratus Anterior M.

Insertion?

A

Anterior surface of Medial border of SCAPULA

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20
Q

Thoracoappendicular Muscles

Serratus Anterior M.

Action?

A

Protracts Scapula

Rotates glenoid cavity superiorly

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21
Q

Thoracoappendicular Muscles

Serratus Anterior M.

Innervation?

A

Long Thoracic N.

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22
Q

CN:

What usually results in “winging of the scapula”?

A

Injury of Serratus Anterior M.

OR

Injury of Long thoracic N.

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23
Q

CN:

What does an injury to the serratus anterior m. or the long thoracic n. usually cause?

A

Winging of the scapula

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24
Q

What are the Posterior Axioappendicular Muscles?

A
  1. Trapezius M.
  2. Latissimus Dorsi M.
  3. Rhomboid Major M.
  4. Rhomboid Minor M.
  5. Levator Scapulae M.
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25
What are the **Scapulohumeral Muscles?**
1. Deltoid M. 2. Supraspinatus M. 3. Infraspinatus M. 4. Teres minor M. 5. Teres Major M.
26
Label the diagram for the **Scapulohumeral Muscles**
27
What is this?
Deltoid M.
28
Scapulohumeral Muscles Deltoid M. Origin?
Lateral 1/3 of clavicle Scapular Spine Acromion
29
Scapulohumeral Muscles Deltoid M. Insertion?
Deltoid Tuberosity of **Humerus**
30
Scapulohumeral Muscles Deltoid M. Action?
Anterior part= Flex and medially rotate the humerus Middle part= ABduct the humerus Posterior part= Extend and laterally rotate the humerus
31
Scapulohumeral Muscles Deltoid M. Innveration?
Axillary N.
32
What is this?
Subscapularis M.
33
Deltoid M. What's special about it?
Think about the action, two opposing actions CAN HAPPEN BECAUSE... _Deltoid M. is multipennate_
34
What are the **Rotator Cuff Muscles?**
SITS Subscapularis M. Infraspinatus M. Teres Minor M. Supraspinatus M.
35
Scapulohumeral Muscles Subscapularis M. Origin?
Medial aspect of the **Subscapular Fossa**
36
Scapulohumeral Muscles Subscapularis M. Insertion?
Lesser tubercle of the **HUMERUS**
37
Scapulohumeral Muscles Subscapularis M. Action?
Medially rotate and ADduct the Humerus
38
Scapulohumeral Muscles Subscapularis M. Innervation?
Upper and Lower **Subscapular N.**
39
What is this?
Supraspinatus M.
40
Scapulohumeral Muscles Supraspinatus M. Origin?
Supraspinous Fossa of **SCAPULA**
41
Scapulohumeral Muscles Supraspinatus M. Insertion?
Greater tubercle of the **HUMERUS**
42
Scapulohumeral Muscles Supraspinatus M. Action?
W/ deltoid m. ... ABduct the humerus Holds the Humeral head in the glenoid cavity
43
Scapulohumeral Muscles Supraspinatus M. Innervation?
Suprascapular N.
44
What is this?
Supraspinatus M.
45
What is this?
Infraspinatus M.
46
Scapulohumeral Muscles Infraspinatus M. Origin?
Infraspinous fossa of **Scapula**
47
Scapulohumeral Muscles Infraspinatus M. Insertion?
Greater tubercle of **Humerus**
48
Scapulohumeral Muscles Infraspinatus M. Action?
**LATERALLY** rotates the HUMERUS Holds humeral head in glenoid cavity
49
Scapulohumeral Muscles Infraspinatus M. Innervation?
Suprascapular N.
50
What is this?
Teres Minor M.
51
Scapulohumeral Muscles Teres Minor M. Origin?
Middle part of the lateral border of the SCAPULA
52
Scapulohumeral Muscles Teres Minor M. Insertion?
Greater tubercle of the HUMERUS
53
Scapulohumeral Muscles Teres Minor M. Action?
Laterally rotates the HUMERUS Holds the humeral head in the glenoid cavity
54
Scapulohumeral Muscles Teres Minor M. Innervation?
Axillary N.
55
CN: What is the most commonly injured rotator cuff muscle?
Supraspinatous M.
56
What is this?
Teres Major M.
57
Scapulohumeral Muscles Teres Major M. Origin?
Posterior aspect of the INFERIOR angle of the SCAPULA
58
Scapulohumeral Muscles Teres Major M. Insertion?
Medial edge of the **Intertubercular Groove Humerus**
59
Scapulohumeral Muscles Teres Major M. Action?
ADduct and Medially rotate the humerus
60
Scapulohumeral Muscles Teres Major M. Innervation?
Lower Subscapular N.
61
What are the ROTATOR CUFF MUSCLES?
SITS Supraspinatous M., Infraspinatus M., Subscapularis M., Teres Minor M.
62
What is this MRI showing?
(Left): Normal MRI (Right): Rotator Cuff Tear
63
Spaces of the **Posterior Shoulder** Label the following:
64
What is the point of learning the spaces of the **posterior shoulder?**
There are several important structures that are in the contents of THREE spaces
65
Spaces of the Posterior Shoulder Triangular Space What are the borders?
Teres Minor M. Teres Major M. Long Head of the Triceps Brachii M.
66
Spaces of the Posterior Shoulder Triangular Space Contents?
Circumflex Scapular A. and V.
67
Spaces of the Posterior Shoulder Quadrangular Space Borders?
Teres Minor M. Teres Major M. Long and Lateral Heads of the Triceps Brachii M.
68
Spaces of the Posterior Shoulder Quadrangular Space Contents?
Posterior Humeral Circumflex A. and V. Axillary N.
69
Spaces of the Posterior Shoulder Triangular Interval Borders?
Teres Major M. Long and Lateral Heads of the Triceps Brachii M.
70
Spaces of the Posterior Shoulder Triangular Interval Contents
Deep Brachial A. and V. Radial N.
71
What are these?
Brachial Muscles in the Anterior Compartment
72
What are the muscles that make up the **Brachial Muscles** in the **Anterior Compartment?**
Coracobrachialis M. Biceps Brachii M. Brachialis M.
73
Brachial (Arm) Muscles | Anterior Compartment Biceps Brachii M. Origin?
* Long head* : Supraglenoid tubercle of the scapula * Short head* : Coracoid process of the scapula
74
Brachial (Arm) Muscles | Anterior Compartment Biceps Brachii M. Insertion?
Radial Tuberosity and Antebrachial Fascia as the BICIPITAL APONEUROSIS
75
Brachial (Arm) Muscles | Anterior Compartment Biceps Brachii M. Action?
Flex the humerus Flex the supine forearm Supinate forearm
76
Brachial (Arm) Muscles | Anterior Compartment Biceps Brachii M. Innervation?
Musculocutaneous N.
77
CN: Striking the thumb placed over the **Bicipital Tendon** with a reflex hammer should produce...
Bicipital Myotactic Reflex
78
CN: What is the **Bicipital Myotactic Reflex?**
Failure of this tendon to tighten up when striken with thumb placed over **Bicipital Tendon** should produce the **Bicipital Myotactic Reflex** FAILURE = Injury to Musculocutaneous N or C5/C6 Anterior Rami
79
CN: What is **Biceps Tendinitis?**
Caused by: repetitive movement of the **Long head** of the **Biceps T.** through the Intertubercular Groove makes that tendon susceptible to inflammation and even CREPITUS
80
CN: What is **Popeye Deformity?**
When Biceps T. dislocates out of Intertubercular Groove or separates from Supraglenoid Tubercle Creates balling up of muscle in arm
81
Brachial (Arm) Muscles | Anterior Compartment Coracobrachialis M. Origin?
Coracoid process of **Scapula**
82
Brachial (Arm) Muscles | Anterior Compartment Coracobrachialis M. Insertion?
Medial aspect of the Humeral Body
83
Brachial (Arm) Muscles | Anterior Compartment Coracobrachialis M. Action?
Flex and ADduct the humerus
84
Brachial (Arm) Muscles | Anterior Compartment Coracobrachialis M. Innervation?
Musculocutaneous N.
85
Brachial (Arm) Muscles | Anterior Compartment Brachialis M. Origin?
Distal half of the anterior aspect of the **HUMERAL BODY**
86
Brachial (Arm) Muscles | Anterior Compartment Brachialis M. Insertion?
Ulnar tuberosity and Coronoid Process
87
Brachial (Arm) Muscles | Anterior Compartment Brachialis M. Action?
Flex the forearm
88
Brachial (Arm) Muscles | Anterior Compartment Brachialis M. Innervation?
Musculocutaneous N.
89
Label the diagram
Brachialis M.
90
Label the diagram
Coracobrachialis M.
91
What are the brachial muscles of the **posterior compartment?**
- Triceps Brachii M. - Anconeus M.
92
Label the diagram of the **Posterior Compartment of Brachial Muscles**
93
Label the diagram of the **Posterior Compartment of Brachial Muscles**
94
What are the two muscles of the **Biceps Muscles Posterior Compartment?**
- Triceps Brachii M. - Anconeus M.
95
Brachial Muscles | Posterior Compartment Triceps Brachii M. Origin?
Long head: Infraglenoid tubercle of scapula Medial Head: Posterior aspect of the Humeral Body; inferior to radial groove Lateral head: Posterior aspect of the Humeral Body
96
Brachial Muscles | Posterior Compartment Triceps Brachii M. Insertion?
Olecranon of Ulna and Antebrachial Fascia
97
Brachial Muscles | Posterior Compartment Triceps Brachii M. Action?
Extend the forearm
98
Brachial Muscles | Posterior Compartment Triceps Brachii M. Innervation?
Radial N.
99
Brachial Muscles | Posterior Compartment Anconeus M. Origin?
Lateral Humeral Epicondyle
100
Brachial Muscles | Posterior Compartment Anconeus M. Insertion?
Lateral aspect of Olecranon
101
Brachial Muscles | Posterior Compartment Anconeus M. Action?
With the **Triceps Brachii M.** EXTENDS the forearm
102
Brachial Muscles | Posterior Compartment Anconeus M. Innervation?
Radial N.
103
What is this?
Anconeus M.
104

MSK: Gross Anatomy Exam 1 (12 decks)

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