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Head & Neck > Muscles Of Head And Neck > Flashcards

Muscles Of Head And Neck Flashcards

1
Q

Sternocleidomastoid

A

Origin: Sternum- manubrium
Medial 1/3 of clavicle

I: Mastoid process of temporal bone

Flex neck bilateral
Can unilaterally f(x) so face is directed to opposite side

CN XI

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2
Q

Scanlenus Anterior

A

O: Transverse processes of upper cervicle
I: Rib 1

Flex neck
Elevate rib1

Branches of ventral rami of cervical spinal nerves

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3
Q

Omohyoid

A

O: Inferior belly from medial side of suprascapular notch (scapula). Intermediate tendon linked to clavicle and rib 1.
Superior belly continues to insertion

I: Hyoid Bone

Depress hyoid bone

Ansa Cervicalis is the nerve

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4
Q

Sternohyoid

A

O: Manubrium of sternum and clavicle
I: Hyoid Bone

Depresses Hyoid bone

Nerve: Ansa Cervicalis

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5
Q

Sternothyroid

A

O: Manubrium & Clavicle
I:thyroid cartilage

Depresses thyroid cartilage, indirectly depresses hyoid bone, larynx

N: Ansa Cervicalis

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6
Q

Thryohyoid

A

O: Thyroid Cartilage
I: Hyoid bone

Depresses hyoid bone, elevates larynx

N: C1 via branch hitchhiking w/ hypoglossal nerve

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7
Q

Digastric Muscle

A

O: Posterior Belly from Temporal Bone(mastoid notch which is medial to mastoid process)
Anterior belly origin is inner side of mandible

I:Hyoid bone via intermediate tendon

Elevates hyoid bone
Depress mandible to aid in swallowing

N: Posterior belly is CN VII
Anterior belly is CN V3 or Mandibular division

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8
Q

Stylohyoid

A

O: styloid process of temporal bone
I: Hyoid bone

elevate hyoid bone

Facial nerve

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9
Q

Mylohyoid

A

O: mylohyoid line
I: Hyoid bone

Elevates hyoid bone
Raises floor of mouth during swallowing

CN V mandibular division

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10
Q

Geniohyoid

A

O: Inner side of mandible
I: hyoid bone

Elevates hyoid bone, draws hyoid forward

C1 via branch hitch-hiking with CN XII

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11
Q

Superior Constrictor

A

O: Pterygomandibular raphe- CT band continous anteriorly w/ buccinator muscle

I: Pharnygeal raphe

Constrict Pharynx

CN X

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12
Q

Middle Constrictor

A

O: Hyoid Bone
I: Pharyngeal Raphe

Constrict pharynx

CN X

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13
Q

Inferior Constrictor

A

O: Thyroid and cricoid cartilage
I: Pharyngeal raphe

Constrict Pharnyx

CN X

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14
Q

Stylopharyngeus

A

O: styloid process of temporal bone
I: thyroid cartilage

Raises pharynx and pulls wall laterally

CN IX

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15
Q

Palatopharyngeus

A

O: Palatine aponeurosis of soft palate
I: thyroid cartilage

Raises pharynx and pulls down soft palate

CN X

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16
Q

Salpingopharyngeus

A

O: Auditory Tube
I: Thyroid Cartilage

Raises Pharynx

CN X

Head & Neck (13 decks)

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