Deltoscapular & Pectoral Region Flashcards

1
Q

Identify the deltoscapular vasculature

A
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2
Q

Identify the following strucures aiding in scapular anastomosis

A
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3
Q

What 3 structures form the quadrangular space?

A

Humerus, teres major, teres minor, long head of the triceps

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4
Q

What forms the triangular space of the shoulder?

A

Long head of the triceps, teres minor, teres major.

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5
Q

What nerve and vasculature can we find in the quadrangular space?

A

axilary nerve, porsterior circumflex humeral artery and vein

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6
Q

What vascularture can we find in the triangular space?

A

circumflex scapular artery

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7
Q

Identify the structures

A

Teres minor and major, quadrangular space, axillary nerve, long head of the triceps

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8
Q

Are the deltoid and supraspinatus adductors or abductors?

A

they are important abductors

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9
Q

What does a torn rotator cuff consist of?

A

it consists of a lasceration of the supraspinatus or in the teres minor (in the case of baseball players)

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10
Q

Name the three ligaments that hold in place the acromion and the clavicle together.

A

1) Coracoacromial ligament
2) Acromioclavicular ligament
3) Coracoclavicular ligament

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11
Q

Identify the 3 ligaments

A
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12
Q

What does a shoulder separaton consist of?

A

shoulder separation consists of damage to the acromioclavicular joint. It occurs as a result of a downward force being applied to the superior part of the acromion, either by something striking the top of the acromion or by falling directly on it.

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13
Q

What does a shoulder dislocation consist of?

A

A shoulder dislocation occurs when the humerus separates from the scapula at the glenohumeral joint.

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14
Q

What is the condition adehesive capsulitis or commonly known as “frozen joint”?

A

It happens when the shoulder capsule, the connective tissue surrounding the glenohumeral joint of the shoulder, becomes inflamed and stiff, greatly restricting motion.

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15
Q

Name the external muscles of the pectoral region.

A

pectoralis major, pectoralis minor, subclavius, serratus anterior

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16
Q

What innervates the pectoralis major?

A

lateral pectoral nerve, medial pectoral nerve, the clavicular head: C5 adn C6, sternocostal head: C7, C8 and T1

17
Q

What innervates the pectoralis minor?

A

Medial pectoral nerve C8 and T1

18
Q

What innervates the subclavius?

A

nerve from the upper trunk of the brachial plexus (C5, C6)

19
Q

What innervates the serratus anterior?

A

long thoracic nerve (C5, C6, C7)

20
Q

Whats the function of the pectoralis major?

A

flexes, adducts, and rotates the arm medially.

The clavicular part draws the arm or shoulder upward, forward, or medialward.

The sternocostal part draws the arm or shoulder forward, medialward, and downward.

21
Q

Whats the funciton of the pectoralis minor?

A

Draws the scapula forward, downward, and rotates it laterally.

It also raises the 3rd, 4th, 5th ribs in forced inspiration.

22
Q

Whats the funciton of the subclavius?

A

Draws the shoulder forward or downward.

23
Q

Whats the function of the serratus anterior?

A

It rotates the scapula, protracts it.

24
Q

What muscles contribute to shoulder joint stability?

A

Rotator Cuff and Tendon of Biceps

25
Q

What muscles form the rotator cuff on the anterior?

A

subscapularis mucles

26
Q

What muscles form the rotator cuff on the posterior side?

A

teres minor, infraspinatus, supraspinatus

27
Q

What muscles do you use for lateral rotation of the arm?

A

Deltoid, Infraspinatus, Teres minor.