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GBE > Shoulder and Arm 1 > Flashcards

Shoulder and Arm 1 Flashcards

1
Q

Which bones constitute the pectoral girdle?

A

Clavicle and scapula

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2
Q

What kind of joint is the sterno-clavicular joint?

A

Synovial joint

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3
Q

Which condition results in a very underdeveloped/absent clavicle?

A

Cleidocranial dysostosis

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4
Q

Which ligaments stabilise the joint between the scapula and the clavicle?

A
  • acromio-clavicular ligament
  • trapezoid ligament
  • conoid ligament
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5
Q

What kind of joint is the scapulo-thoracic joint?

A

‘physiological joint’

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6
Q

What are the deep posterior axio-appendicular muscles?

A
  • levator scapulae
  • rhomboid minor
  • rhomboid major
  • serratus anterior
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7
Q

What is the function of the deep posterior axio-appendicular muscles?

A

elevate, retract and rotate the scapula

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8
Q

What is the function of trapezius?

A

Elevate, retract and depress the scapula

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9
Q

What is the function of latissimus dorsi?

A

Extends, adducts and medially rotates the humerus

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10
Q

What are the superficial posterior axio-appendicular muscles?

A

trapezius

latissimus dorsi

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11
Q

What causes winged scapula?

A

Paralysis of serratus anterior

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12
Q

What is the function of serratus anterior?

A
  • protracts and rotates the scapula
  • holds scapula against thoracic wall
  • can assist in respiration
  • ‘boxer’s muscle’
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13
Q

What are the anterior axio-appendicular muscles?

A

Pectoralis major

Serratus anterior

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14
Q

What is the function of pectoralis major?

A

Adducts, flexes and medially rotates arm

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15
Q

What is Poland’s syndrome?

A

Absence of pectoralis major1

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16
Q

What are the deep anterior axio-appendicular muscles?

A

Subclavius

Pectoralis minor

17
Q

What is scapulo-humeral rhythm?

A

Some rotation of the shoulder comes from rotation of the scapula on the rib cage

18
Q

What is the glenoid labrum?

A

Fibrocartilaginous rim around glenoid cavity (enhances stability)

19
Q

What is the function of the deltoid muscle?

A

Anterior: flexion, medial rotation
Middle: Abduction of arm
Posterior: extension, lateral rotation

20
Q

What is the function of supraspinatus?

A

Initiates abduction of arm

21
Q

What is the function of infraspinatus?

A

Laterally rotates arm

22
Q

What is the function of teres minor?

A

Laterally rotates arm

23
Q

What is the function of teres major?

A

Medially rotates the arm

24
Q

What is the function of subscapularis?

A

Medially rotates arm

25
Q

What are the rotator cuff muscles?

A 
SITS
supraspinatus
infraspinatus
teres minor
subscapularis

GBE (15 decks)

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