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Posterior Cervical Triangle > Posterior Cervicle Triangle > Flashcards

Posterior Cervicle Triangle Flashcards

1
Q

What is the insertion of the sternoleidomastoid sternal head?

A

Temporal bone (mastoid process) ; occipital bone ( superior nuchal line)

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2
Q

What is the innervation of the sternoleidomastoid sternal head?

A

Motor: accessory nerve CN XI

Pain and proprioception: Cervical Plexus (C2, C3)

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3
Q

What is the action of the sternoleidomastoid sternal head?

A

Unilateral: Tilts head to same side; rotates head to opposite side

Bilateral: extends head, aids in respiration when head is fixed

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4
Q

What is the origin of the sternoleidomastoid clavicular head?

A

Clavicle [lol] (medial one third)

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5
Q

What is the insertion of the sternoleidomastoid clavicular head?

A

temporal bone (mastoid process) ; occipital bone (superior nuchal line)

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6
Q

What is the innervation of the sternoleidomastoid clavicular head?

A

Motor: Accessory nerve CN XI

Pain and proprioception: Cervical Plexus (C2, C3)

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7
Q

What is the action of the sternoleidomastoid clavicular head?

A

Unilateral: Tilts head to same side, rotates head opposite side

Bilateral: Extends head, aids in respiration when head is fixed

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8
Q

What is the origin of the anterior scalene?

A

C3-C6 (anterior tubercles of transverse processes)

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9
Q

What is the insertion of the anterior scalene?

A

1st rib ( scalene tubercle)

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10
Q

What is the innervation of the anterior scalene?

A

Direct branches from cervical and brachial plexus (C3-C8)

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11
Q

What is the action of the anterior scalene?

A

With ribs mobile: raises upper ribs (inspiration)

With ribs fixed: bends cervical spine to same side (unilateral); flexes neck (bilateral)

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12
Q

What is the origin of the middle scalene?

A

C1-C2 (transverse processes)

C3-C7 (posterior tubercles of transverse processes)

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13
Q

What is the insertion of the middle scalene?

A

1st rib (posterior to groove for subclavian a.)

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14
Q

What is the innervation of the middle scalene?

A

Direct branches from cervical and brachial plexus (C3-C8)

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15
Q

What is the action of the middle scalene?

A

With ribs mobile: raises upper ribs (inspiration)

With ribs fixed: bends cervical spine to same side (unilateral); flexes neck (bilateral)

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16
Q

What is the origin of the posterior scalene?

A

C5-C7 (transverse processes, posterior tubercles)

17
Q

What is the insertion of the posterior scalene?

A

2nd rib (outer surface)

18
Q

What is the innervation of the posterior scalene?

A

Direct branches from cervical and brachial plexus (C3-C8)

19
Q

What is the action of the posterior scalene?

A

With ribs mobile: raises upper ribs (inspiration)

With ribs fixed: bends cervical spine to same side (unilateral); flexes neck (bilateral)

20
Q

What is the origin of the sternoleidomastoid sternal head?

A

Sternum (maubrium)

Posterior Cervical Triangle (1 decks)

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