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Scapular region > Rotator cuff muscles > Flashcards

Rotator cuff muscles Flashcards

1
Q

What is the origin and insertion of the supraspinatus?

A

supraspinous fossa to greater tubercle

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2
Q

what is the action of the Supraspinatus M.?

A

initiate abduction of arm from 0-15 degrees

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3
Q

What innervates the Spraspinatus M?

A

suprascapular nerve

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4
Q

What is the origin insertion of infraspinatus?

A

infraspinous fossa to greater turbcle

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5
Q

What is the action of infraspinatus M?

A

main lateral rotator

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6
Q

What is the innervation of the infraspinatous M.?

A

suprascapular nerve

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7
Q

What are the attachments of teres minor?

A

bottom part of infraspinous fossa to greater turbcle

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8
Q

What is the function of trees minor?

A

assist in infraspinatous lateral rotation

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9
Q

What is the innervation of the teres minor?

A

axillary N

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10
Q

What is attachments of subscapularis M?

A

subscapular fossa to lesser turbcle

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11
Q

What is the function of subscapularis?

A

medial rotator of the arm

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12
Q

What nerves innervate subsacpularis?

A

upper and lower sub scapular

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13
Q

What are the rotator cup muscles?

A

Supraspinatous
infraspinatous
teres minor
subscapularis

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14
Q

what are the rotator cup muscles help with?

A

helps protects the glenoidhummeral joint from dislocating

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15
Q

how does the joint stops from popping out the glenoid fossa?

A

synovial fluid is water based forces pulling the head out is balanced by the negative pressure on the inside

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16
Q

What is a rotator cuff tear?

A

it is tearing of any of the rotator cuff muscles but the supraspinatous is most common

17
Q

What is impingement syndrome?

A

raising the arm causes the greater turbucle to impinge the supraspinatous or biceps brachii long head tendon

18
Q

What is the attachments of teres major M.

A

inferior part of the lateral border of scapula to interturbuclar groove (next to the lats)
not a rotator cuff muscle

19
Q

What is the action of teres major?

A

extension
adduction
medial rotation of arm
(sane as lats but not as strong)

20
Q

What is the innervation of teres Major?

A

lower sub scapular nerve

Scapular region (6 decks)

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