Dissection 3: Posterior shoulder and rotator cuff muscles Flashcards

1
Q

What are the three movements that the deltoid brings about

A

extension of the shoulder
abduction of the shoulder after 15 degrees
flexion of the shoulder

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2
Q

What do the ascending fibres of the trapezius do

A

depress the scapula

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3
Q

what do the middle fibres of the trapezius do

A

retract the scapula

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4
Q

What to the descending fibres of the trapezius do

A

elevate the scapula

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5
Q

What is the function of the rhomboids major and minor

A

retraction of the scapula and inferior rotation of the glenoid fossa

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6
Q

What is the function of supraspinatous

A

first 15 degrees of abduction at the shouldr

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7
Q

What is the function of infraspinatous

A

lateral rotation of shoulder

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8
Q

What is the function of teres minor

A

lateral rotation

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9
Q

what is the function of subscapularis

A

medial rotation

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10
Q

what is the function of teres major

A

adduction/medial rotation at the shoulder

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11
Q

What nerve supplies the deltoid

A

axillary

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12
Q

Where do the rotator cuff muscles attach

A

to the scapula proximally and to the tubercles of the head of the humerous distally

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13
Q

Which rotator cuff muscles attach distally to the greater tubercle of the humerous

A

supraspinatous, infraspinatous and teres minor

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14
Q

Which rotator cuff muscle inserts on the lesser tubercle of the humrous

A

subscapularis

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