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Gross Anatomy 2 > Shoulder Superficial Back > Flashcards

Shoulder Superficial Back Flashcards

1
Q

Action of fibers of trap?

A

Upper: elevate scap
Middle: retract scap
Lower: depress scap

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2
Q

Ipsilateral contraction of trapezius?

A

Laterally flexes head and cervical vertebrae.

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3
Q

Bilateral contraction of upper fibers of traps?

A

Extends the head.

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4
Q

Spinal levels of trap?

A

C3, C4, spinal part of cranial nerve XI

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5
Q

Innervation of trap?

A

Motor via spinal acccessory (XI) and prorioception via C3 and C4

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6
Q

Origin and insertion of trapezius.

A

Origin: medial part of superior nuchal line, EOP, lig nuchae, and SP’s of C7-T12.
Insertion: lateral 1/3 of clavicle, scapular spine, and acromion process

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7
Q

Origin and insertion of lat Dorsi muscle?

A

Origin: thoracolumbar fascia, SPs of lower 6 TV and all 5 LV, sacrum, iliac crest and lower 3-4 ribs.
Insertion: floor of intertubucular groove.

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8
Q

What innervates lat dorsi?

A

Thoracodorsal nerve.

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9
Q

Actions of lat dorsi muscle?

A

Adduction, extension, medial rotation of humerus

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10
Q

Spinal levels of lat dorsi?

A

C6/7/8

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11
Q

Rhomboid muscles actions?

A

Retract scap, elevate medial border of scap, downward rotation of scapula.

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12
Q

Spinal levels of rhomboid muscles?

A

C4/5

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13
Q

What innervates rhomboid muscles?

A

Dorsal scapular nerve

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14
Q

Origin and insertion of rhomboid major?

A

Origin: SPs of T2-T5
Insertion: medial border of scap between spine and inferior angle of scap

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15
Q

Origin and insertion of rhomboid minor?

A

Origin: SPs of C7-T1
Insertion: between ROSOS and superior angle of scap above rhomboid major

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16
Q

Levatore scapulae origin and insertion?

A

Origin: posterior tubercles of TPs of C1-C3/4
Insertion: superior angle of scap

17
Q

Innervation of lev scap?

A

Dorsal scapular nerve and ventral rami of C3/4

18
Q

Spinal levels of lev scap?

A

C3/4/5

19
Q

Actions of lev scap?

A

Downward rotation of scapula, elevate and retract scap with trap, laterally flexes neck IF SCAPULA IS FIXED

Gross Anatomy 2 (11 decks)

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