Movements of the pectoral girdle Flashcards

1
Q

Which muscle elevate the scapula?

A

Trapezius (upper part)
Levator scapulae
Rhomboid minor
Rhomboid major

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2
Q

Which muscles depress scapula?

A
Ant:
Subclavius
Pec minor
Lower fibres of Pec Major
Lower fibres of serratus anterior

Post:
Lower trapezius
Lower fibres of serratus anterior
Lower fibres of lat dorsi

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3
Q

Which muscles protract the scapula? (Scapula abduction)

A

Pec minor
Pec major
Serratus anterior

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4
Q

Which muscles retract the scapula?

A

Rhom. Minor
Rhom. Major
Middle fibres of trapezius
Upper fibres of Lat dorsi.

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5
Q

Which muscles inferiorly rotate the scapula?

A

Ant.
Pec minor
Lower pec major

Post.
Levator scapulae
Rhom Minor
Rhom Major

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6
Q

Which muscles superiorly rotate the scapula?

A

Trapezius (upper part)
Trapezius (lower part)
Serratus anterior

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7
Q

What movements does pec major contribute to?

A
  • Adducts the humerus
  • Internally rotates humerus
  • Can help protract scapula by pulling on humerus
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8
Q

What movements does subclavius contribute to?

A

Braces scapula

Weal depressor of scapula

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9
Q

What movements does pec minor contribute to?

A

Depresses scapula

Helps protract scapula

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10
Q

What movements does serratus anterior contribute to?.

A
  • Protracts scapula

- Lower fibres help superiorly rotate scapula

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11
Q

What movements does trapezius contribute to?

A
Fibres all together = Retracts scapula
Sup. only = Elevates scapula
Middle only = Retracts scapula
Inf. only = Depresses scapula
Sup and Inf. = Superior rotation of scapula
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12
Q

What movements does levator scapula contribute to?

A

Elevates scapula

Helps inferiorly rotate scapula

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13
Q

What movements does rhom major and minor contribute to?

A

Retracts scapula
Elevates scapula
Helps inferiorly rotate scapula

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14
Q

What movements does lat dorsi contribute to?

A

Adducts humerus
Internally rotates humerus
Lower fibres can depress scapula by pulling on humerus
Can inferiorly rotate scapula by pulling on humerus

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