Session 2-Functional Anatomy Of The Shoulder And Upper Arm Flashcards

1
Q

What does the shoulder girdle consist of?

A

Clavicle

Scapula

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2
Q

What does the shoulder girdle do?

A

Connects the arm to the axial skeleton

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3
Q

What is the shoulder joint called?

A

Glenohumeral joint

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4
Q

Which is the first bone to start ossifying?

A

Clavicle

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5
Q

What type of joint is the glenohumeral joint?

A

Ball and socket synovial joint

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6
Q

Which joint is most commonly dislocated?

A

Glenohumeral joint

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7
Q

What is the mnemonic for the rotator cuff muscles?

A
SITS:
Supraspinatus 
Infraspinatus
Teres Minor
Subscapularis
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8
Q

Which nerve supplies supraspinatus?

A

Suprascapular nerve

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9
Q

Which nerve supplies infraspinatus?

A

Suprascapular nerve

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10
Q

Which nerve supplies teres minor?

A

Axillary nerve

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11
Q

Which nerves supply subscapularis?

A

Upper and lower subscapular nerves

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12
Q

What is the importance of the rotator cuff?

A

Stabilises the shoulder joint

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13
Q

How big is the space between the acromion and the humeral head?

A

1-1.5cm

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14
Q

What is contained within the space between the acromion and the humeral head? (4)

A

1) Subacromial bursa
2) Rotator cuff tendons
3) Capsule
4) Long head of biceps

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15
Q

What is the bursa?

A

Fluid-filled sac that reduces friction

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16
Q

Where does the first 90 degrees of abduction of the shoulder come from?

A

Glenohumeral joint

17
Q

Where does the first 15 degrees of abduction of the shoulder come from?

A

Supraspinatus

18
Q

Which muscle is responsible for 15-90 degrees of shoulder abduction?

19
Q

Which joint is responsible for over 90 degree abduction?

A

Scapulo-thoracic joint

20
Q

Which muscles are responsible for over 90 degree abduction of the shoulder?

A

Upper trapezius

Serratus anterior

21
Q

Which muscles are responsible for adduction of the shoulder? (3)

A

1) Pec major
2) Lat Dorsi
3) Teres Major

22
Q

Which nerves supply pec major?

A

Medial and lateral pectoral nerves

23
Q

Which nerve supplies lat dorsi and teres major?

A

Thoracodorsal nerve

24
Q

Which muscles are responsible for flexion of the shoulder? (4)

A

1) Anterior fibres of the deltoid
2) Pec major
3) Coracobrachialis
4) Biceps brachii

25
Which nerve supplies the deltoid?
Axillary nerve
26
Which nerve supplies coracobrachialis and biceps brachii?
Musculocutaneous nerve
27
Which muscles are responsible for extension of the shoulder? (3)
1) posterior fibres of the deltoid 2) lat dorsi 3) teres major
28
Which muscles are responsible for internal rotation of the shoulder? (4)
1) subscapularis 2) teres major 3) pec major 4) lat dorsi
29
Which muscles are responsible for external rotation of the shoulder? (2)
1) infraspinatus | 2) teres minor
30
What is negative intra-articular pressure?
Negative pressure holds humerus in its place within the glenoid