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A + P 1 Before Midterm > Muscles of the Neck that Move the Head > Flashcards

Muscles of the Neck that Move the Head Flashcards

1
Q

How does the head attach to the VC?

A

the head is attached to the VC at the atlanto-occipital joint

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2
Q

Where are suboccipital muscles located

A

deep muscles in the back of the neck attached between the occipital bone and C1+C2

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3
Q

What muscles stabilize the AOJ and AAJ?

A

suboccipital

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4
Q

the balance and movement of the head involves the action of neck muscles doing what?

A

acting together bilaterally

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5
Q

The unilateral contraction of suboccipital muscles allow what movements?

A

rotation, flexion, extension, lateral flexion of head

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6
Q

What muscles are considered suboccipital muscles?

A 
SCM
semispinalis capitis
splenius capitis
longissimus capitis
spinalis capitis
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7
Q

What is the origin of the SCM

A

sternal head: manubrium of sternum

clavicular head: medial 1/3 of clavicle

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8
Q

What is the insertion of the SCM

A

mastoid process and EOP

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9
Q

What is the innervation of SCM

A

spinal accessory nerve of C2-C3

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10
Q

When the SCM acts bilaterally what movements are possible

A

flexion of head

posterior fibres can assist in extension of head

auxiliary muscles in the forced inspiration by elevating ribs and sternum

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11
Q

What the SCM act unilaterally what movements are possible

A

lateral flexion and rotation of the head

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12
Q

What is the origin of semispinalis capitis

A

C4-C6 and C7-T4

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13
Q

What is the insertion of semispinalis capitis

A

occipital bone

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14
Q

What are the actions of semispinalis capitis

A

bilaterally: extension of the head
unlaterally: rotation of the head

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15
Q

What is the innervation of semispinalis capitis

A

cervical spinal nerves

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16
Q

What is the most superficially located suboccipital muscles

A

splenius capitis

17
Q

What is the origin of the splenius capitis

A

ligamentum nuchae and SP of C7-T4

18
Q

What is the insertion of splenius capitis

A

occipital bone and mastoid process

19
Q

What are the actions of splenius capitis

A

extensor muscle

20
Q

What is the innervation of the splenius capitis

A

cervical spinal nerves

21
Q

What suboccipital muscle is often not present and arises with semispinalis capitis?

A

splenius capitis

22
Q

What is the origin of longissimus capitis

A

T1-T4

23
Q

What is the insertion of the longissimus capitis

A

mastoid process

24
Q

What are the actions of the longissimus capitis

A

bilaterally: extension of the head
unilaterally: lateral flexion and rotation of the head

25
Q

What is the innervation of the longissimus capitis

A

cervical spinal nerves

A + P 1 Before Midterm (25 decks)

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