- Innervation: temporal branches of facial nerve

- Innervation: superior buccal branches of facial nerve - Action: depress eyebrows medially

- Innervation: superior buccal branches of facial nerve - Action: compress cartilage at bridge of nose

- Innervation: superior buccal branches of facial nerve - Action: widens, dilates nostrils and anterior nasal aperture

- Innervation: superior buccal branches of facial nerve - Action: widens nostril

- Innervation: buccal branches of facial nerve - Actions: raises upper lip; produces nasolabial groove

- Innervation: buccal branches of facial nerve - Action: draws angle of mouth up and out

- Innervation: buccal branches of facial nerve - Actions: raises angle of mouth; produces nasolabial groove

Practical 2 Actions and Innervations Flashcards by Kelsey Thomas

Frontalis belly, epicranius

Innervation: temporal branches of facial nerve

- Actions: pulls scalp forward; wrinkles forehead and raises eyebrows

How well did you know this?

Not at all

Perfectly

Corrugator supercilii

Innervation: temporal branches of facial nerve

- Action: draws eyebrows medial and down (forms vertical furrow between eyebrows)

How well did you know this?

Not at all

Perfectly

Superior auricular

Innervation: temporal branches of facial nerve

How well did you know this?

Not at all

Perfectly

Temporoparietalis

Innervation: temporal branches of facial nerve

How well did you know this?

Not at all

Perfectly

Orbital part, orbicularis oculi

Innervation: temporal and zygomatic branches of facial nerve

How well did you know this?

Not at all

Perfectly

Palpebral part, orbicularis oculi

Innervation: temporal and zygomatic branches of facial nerve

How well did you know this?

Not at all

Perfectly

Procerus

Innervation: superior buccal branches of facial nerve

- Action: depress eyebrows medially

How well did you know this?

Not at all

Perfectly

Compressor naris

Innervation: superior buccal branches of facial nerve

- Action: compress cartilage at bridge of nose

How well did you know this?

Not at all

Perfectly

Dilatator naris

Innervation: superior buccal branches of facial nerve

- Action: widens, dilates nostrils and anterior nasal aperture

How well did you know this?

Not at all

Perfectly

Depressor septi

Innervation: superior buccal branches of facial nerve

- Action: widens nostril

How well did you know this?

Not at all

Perfectly

Levator labii superioris

Innervation: buccal branches of facial nerve

- Action: raises and everts upper lip

How well did you know this?

Not at all

Perfectly

Levator labii superioris alaeque nasi

Innervation: buccal branches of facial nerve

- Actions: raises and everts upper lip; dilates nostril

How well did you know this?

Not at all

Perfectly

Zygomaticus minor

Innervation: buccal branches of facial nerve

- Actions: raises upper lip; produces nasolabial groove

How well did you know this?

Not at all

Perfectly

Zygomaticus major

Innervation: buccal branches of facial nerve

- Action: draws angle of mouth up and out

How well did you know this?

Not at all

Perfectly

Levator anguli oris

Innervation: buccal branches of facial nerve

- Actions: raises angle of mouth; produces nasolabial groove

How well did you know this?

Not at all

Perfectly

Buccinator

Innervation: buccal branches of facial nerve

- Action: compresses cheeks against teeth

Orbicularis oris

Innervation: buccal and mandibular branches of facial nerve
Actions: close mouth; purse and protrude lips

Risorius

Innervation: buccal and mandibular branches of facial nerve
Action: draws back angle of mouth

Mentalis

Innervation: mandibular branches of facial nerve

- Action: raises and protrudes lower lip

Depressor labii inferioris

Innervation: mandibular branches of facial nerve

- Action: draws lower lip down

Depressor anguli oris

Innervation: mandibular branches of facial nerve

- Action: draws corner of mouth down and out

Levator palpebra superioris

Innervation: oculomotor nerve

- Action: elevates upper eyelid

Superior rectus

Innervation: oculomotor nerve

- Actions: elevate and adduct the cornea; intorsion

Inferior rectus

Innervation: oculomotor nerve

- Actions: depress and adduct the cornea; extorsion

Medial rectus

- Innervation: oculomotor nerve | - Action: adducts cornea

Inferior oblique

- Innervation: oculomotor nerve | - Actions: elevate and abduct the cornea; extorsion

Lateral rectus

- Innervation: abducent nerve | - Action: abducts cornea

Superior oblique

- Innervation: trochlear nerve | - Actions: depress and abduct the cornea; intorsion

Posterior auricular

- Innervation: posterior auricular branch of facial nerve

Occipitalis belly, epicranius

- Innervation: posterior auricular branch of facial nerve | - Action: pulls scalp backward

Temporalis

- Innervation: anterior and posterior deep temporal branches, mandibular division, trigeminal nerve - Action: elevate and retract mandible

Masseter

- Innervation: masseteric branch, mandibular division, trigeminal nerve - Action: elevate and protract mandible

Medial pterygoid

- Innervation: medial pterygoid branch, mandibular division, trigeminal nerve - Actions: elevate and protract mandible; assists in gliding or rotatory movement

Lateral pterygoid

- Innervation: lateral pterygoid branch, mandibular division, trigeminal nerve - Actions: protracts mandible; pulls disc forward; depress chin and assist in gliding or rotatory movement

Anterior scalene

- Innervation: ventral rami C2-C6

Middle scalene

- Innervation: ventral rami C3-C8