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Anatomy > Upper Extremity > Flashcards

Upper Extremity Flashcards

0
Q

Posterior boundary of the axilla?

A

Subscapular
Latissimus dorsi
Teres major
Also called the Scapular Boundary

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1
Q

Anterior boundary of the axilla?

A

Pectoralis major
Pectoralis minor
Subclavius

Also called Pectoral boundary

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2
Q

Medial boundary of the axilla?

A

2nd to 6th rib and intercostal muscles
Serratus anterior muscle
Also called the Costal Boundary

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3
Q

Lateral boundary of the axilla?

A

Humerus
Short and Long head of the biceps brachii
Coracobrachialis

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4
Q

Apex boundary of the axilla?

A

Bounded by 3 bones:
Clavicle (anterior)
Scapula (posterior)
1st rib (medial)

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5
Q

Base boundary of the axilla?

A

Skin
Subcutaneous fascia
Axillary fascia

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6
Q

What structures are covered by the axillary fascia?

A

Axillary vein
Axillary artery
Brachial plexus

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7
Q

True or False:

The axillary fascia is the lateral prolongation of the vertebral fascia and extends up to the elbow?

A

False

Prevertebral fascia NOT vertebral fascia

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8
Q

What are the rotator cuff muscles?

A 
Remember SITS
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
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9
Q

What are the intrinsic muscles of the shoulder?

A 
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
Deltoid
Teres Major
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10
Q

Nerve supply and action of Supraspinatus?

A

Suprascapular

Abductor (initiates abduction)

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11
Q

Nerve supply and action of Infraspinatus?

A

Suprascapular

Lateral rotator

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12
Q

If the axillary nerve is compromised what shoulder action/s will be lost?

A

Abduction and Lateral Rotation

(Pero iniisip ko na ang mawawala ay yung full abduction kasi yung Supraspinatus kaya niya up to certain point kasi siya yung Initiator of Abduction at yung Lateral Rotation baka weakened lang kasi kaya rin yun ng Infraspinatus)

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13
Q

Nerve supply and action of Teres Minor?

A

Axillary

Lateral Rotator

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14
Q

Nerve supply and action of Subscapularis?

A

Upper subscapular

Medial rotator

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15
Q

Nerve supply and action of Deltoid?

A

Axillary

Abductor

16
Q

Nerve supply and action of Teres Major?

A

Lower subscapular

Medial rotator

17
Q

Most commonly affected tendon when the rotator cuff is inflammed?

A

Supraspinatus muscle tendon

Note:
Patients experience pain anterior and superior to the shoulder joint during abduction

18
Q

What are the borders of the Quadrangular Space?

A

Above - Teres Minor
Below - Teres Major
Medial - Long head of triceps brachii
Lateral - Surgical neck of humerus

19
Q

What are the contents of the quadrangular space?

A 
Axillary nerve (circumflex nerve)
Posterior circumflex humeral vessels
20
Q

Borders of the Triangular Space?

A

Above - Teres Minor
Below - Teres Major
Laterally - Long head of triceps brachii

Anatomy (8 decks)

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