608 and 709- Muscle Table

primary muscles of mastication (4)

temporalis

masseter

medial pterygoid

lateral pterygoid

temporalis action

mandible closure and retrusion

temporalis origin

temporal fossa

temporalis insertion

coronoid process and ramus of mandible

temporalis innervation

trigeminal nerve- mandibular branch (CN V3)

masseter action

mandible closure and protrusion

masseter origin

zygomatic arch

masseter insertion

coronoid process and ramus of mandible

masseter innervation

trigeminal nerve- mandibular branch (CN V3)

medial pterygoid action

mandible closure and protrusion

medial pterygoid origin

lateral pterygoid plate (medial surface) of sphenoid

medial pterygoid insertion

ramus of mandible

medial pterygoid innervation

trigeminal nerve- mandibular branch (CN V3)

lateral pterygoid action

mandible opening and protrusion

lateral pterygoid origin

lateral pterygoid plate (lateral surface) of sphenoid

lateral pterygoid insertion

1. neck of mandible

2. TMJ capsule

3. articular disc

lateral pterygoid innervation

trigeminal nerve- mandibular branch (CN V3)

accessory muscles of mastication- infrahyoid muscles (4)

omohyoid

sternothyroid

sternohyoid

thyrohyoid

omohyoid (superior and inferior belly) action

depression of larynx/hypoid bone for swallowing

omohyoid superior belly origin

hyoid

omohyoid inferior belly origin

scapula

omohyoid (superior and inferior belly) insertion

intermediate tendon

omohyoid (superior and inferior belly) innervation

ansa cervicalis (C1-3)

sternothyroid action

depression of larynx/hypoid bone for swallowing

sternothyroid origin

manubrium

sternothyroid insertion

thyroid cartilage

sternothyroid innervation

ansa cervicalis (C1-3)

sternohyoid action

depression of larynx/hypoid bone for swallowing

sternohyoid origin

manubrium and medial end of clavicle

sternohyoid insertion

hyoid

sternohyoid innervation

ansa cervicalis (C1-3)

thyrohyroid action

depression of larynx/hypoid bone for swallowing

thyrohyroid origin

thyroid cartilage

thyrohyroid insertion

hyoid

thyrohyroid inneveration

hypoglossal nerve (CN XII)

anterior neck- superficial muscles (2)

platysma

sternocleidomastoid

platysma action

tenses skin of neck

platysma origin

surrounding muscles and skin

platysma insertion

mandible

platysma innervation

facial nerve (CN VII)

sternocleidomastoid (sternal and clavicular head) action

head forward flexion (bilateral), lateral flexion to same side, and rotation to opposite side (unilateral)

sternocleidomastoid sternal head origin

manubrium

sternocleidomastoid clavicular head origin

clavicle- medial third

sternocleidomastoid (sternal and clavicular head) insertion

1. mastoid process (temporal)

2. superior nuchal line (occipital)

sternocleidomastoid (sternal and clavicular head) innervation

spinal accessory nerve (CN XI)

deep neck muscles (7)

longus colli

longus capitis

rectus capitis anterior

rectus capitis lateralis

anterior scalene

middle scalene

posterior scalene

longus colli action

lateral flexion and rotation of head

longus colli origin

1. C5-T3 bodies

2. C3-5 transverse processes

longus colli insertion

1. C1-3 bodies

2. C3- transverse processes

longus colli innervation

anterior rami (C1-8)

longus capitis action

head flexion

longus capitis origin

C3-6 transverse process

longus capitis insertion

occipital bone

longus capitis innervation

anterior rami (C1-8)

rectus capitis anterior action

head flexion

rectus capitis anterior origin

atlas (C1)

rectus capitis anterior insertion

occipital bone

rectus capitis anterior innervation

anterior rami (C1-8)

rectus capitis lateralis action

head lateral flexion

rectus capitis lateralis origin

atlas (C1)

rectus capitis lateralis insertion

occipital bone

rectus capitis lateralis innervation

anterior rami (C1-8)

anterior scalene action

lateral head flexion and 1st rib elevation

anterior scalene origin

C3-6 transverse process

anterior scalene insertion

1st rib

anterior scalene innervation

anterior rami (C1-8)

middle scalene action

lateral head flexion and 1st rib elevation

middle scalene origin

C2-7 transverse process

middle scalene insertion

1st rib

middle scalene innervation

anterior rami (C1-8)

posterior scalene action

lateral head flexion and 2nd rib elevation

posterior scalene origin

C4-6 transverse process

posterior scalene insertion

2nd rib

posterior scalene innervation

anterior rami (C1-8)

posterior neck- suboccipital muscles (4)

rectus capitis posterior major

rectus capitis posterior minor

obliquus capitis superior

obliquus capitis inferior

rectus capitis posterior major action

head extension and rotation to same side

rectus capitis posterior major origin

spinous process of axis (C2)

rectus capitis posterior major insertion

inferior nuchal line (occipital)

rectus capitis posterior major innervation

suboccipital nerve (C1)

rectus capitis posterior minor action

head extension and rotation to same side

rectus capitis posterior minor origin

posterior tubercle of atlas (C1)

rectus capitis posterior minor insertion

inferior nuchal line (occiptal)

rectus capitis posterior minor innervation

suboccipital nerve (C1)

obliquus capitis superior action

head extension and lateral flexion

obliquus capitis superior origin

transverse process of atlas (C1)

obliquus capitis superior insertion

inferior nuchal line (occipital)

obliquus capitis superior innervation

suboccipital nerve (C1)

obliquus capitis inferior action

head extension and lateral flexion

obliquus capitis inferior origin

spinous process of axis (C2)

obliquus capitis inferior insertion

transverse process of atlas (C1)

obliquus capitis inferior innervation

suboccipital nerve (C1)

superficial layer of deep back muscles- splenius (2)

splenis capitis

splenis cervicis

splenuis capitis action

head/neck bilateral extension and unilateral rotation

splenius capitis origin

1. C7-T4 spinous processess

2. ligamentum nuchae

splenius capitis insertion

1. mastoid process

2. superior nuchal line1

splenius capitis innervation

posterior rami

splenius cervicis action

head/neck bilateral extension and unilateral rotation

splenius cervicis origin

T3-6 spinous processes

splenuis cervicis insertion

C1-3 transverse processes

splenius cervicis innervation

posterior rami