H&N - muscles Flashcards
What is the innervation of this muscle?

Sternohyoid
C1-C3 through ansa cervicalis
What is the innervation of this muscle?

Omohyoid
C1-C3 through ansa cervicalis
What is the action of this muscle?

Stylohyoid
elevates and retracts hyoid bone
What is the action of this muscle?

Hyoglossus
Depresses tongue
What is this muscle?

Stylohyoid
What muscle is this?

Styloglossus
What is the innervation of this muscle?

Geniohyoid
Hypoglossal nerve - CN XII
What is the action of this muscle?

Medial pterygoid
Protracts mandible (with lateral)
Side to side movements
What muscle is this?

Mylohyoid
What muscle is this?

Lateral rectus
What is the action of this muscle?

Mylohyoid
Elevates hyoid
What is the action of this muscle?

Posterior belly of digastric
Opens mouth + depresses mandible
What is the action of this muscle?

Medial rectus
Adduction of eye
What is the innervation of this muscle?

Inferior oblique
CN III - oculomotor
What is the innervation of this muscle?

Temporalis
Mandibular branch of trigeminal nerve - CN V3
What muscle is this?

Omohyoid
What is the action of this muscle?

Buccinator
Compresses cheek
What is the innervation of this muscle?

Levator palpebrae superior
CN III - oculomotor
What muscle is this?

Orbicularis oculi
What muscle is this?

Stylohyoid
What is the innervation of this muscle?

Masseter
Mandibular branch of trigeminal nerve - CN V3
What is the innervation of this muscle?

Orbicularis oris
Facial nerve CN VII
What is the innervation of this muscle?

Anterior belly of occipitofrontalis
Facial nerve - CNVII
What muscle is this?

Geniohyoid
What muscle is this?

Levator palpebrae superior
What is the innervation of this muscle?

Thyrohyoid
C1 through hypoglossal nerve
What is the innervation of this muscle?

Mylohyoid
Mandibular branch of trigeminal - CNV3
What muscle is this?

Platysma
What is the action of this muscle?

Geniohyoid
Elevates hyoid bone (Plus pulls anteriorly)
What is the action of this muscle?

Anterior belly of frontalis
Raises eyebrows
What is the action of this muscle?

Inferior rectus
Moves eye
Depresses
Adducts
Extorts
What muscle is this?

Inferior oblique
What is the innervation of this muscle?

Anterior belly of digastric
Mandibular branch of trigeminal CN V3
What muscle is this?

Inferior rectus
What is the action of this muscle?

Levator palpebrae superior
Elevates upper eyelid
What muscle is this?

Temporalis
What is the innervation of this muscle?

Platysma
Facial nerve - CN VII
What is the innervation of this muscle?

Buccinator
Facial nerve - CN VII
What is the action of this muscle?

Sternothyroid
Pulls larynx and hyoid bone inferiorly
What is the innervation of this muscle?

Superior rectus
moves eye:
Elevates
Adducts
Intorsion
What is the action of this muscle?

Orbicularis oris
Closes mouth
What is the action of this muscle?

Styloglossus
Retracts and elevates tongue
What is the innervation of this muscle?

Sternothyroid
C1-C3 through ansa cervicalis
What muscle is this?

Masseter
What is the innervation of this muscle?

Superior rectus
CN III - oculomotor nerve
What is the actionof this muscle?

Posterior belly of occipitofrontalis muscle
Pulls scalp posteriorly
What muscle is this?

Lateral pterygoid
What muscle is this?

Superior oblique
What is the innervation of this muscle?

Hyoglossus
Hypoglossal nerve CN XII
What is the action of this muscle?

Temporalis
Closes jaw
What is the innervation of this muscle?

Stylohyoid
Facial nerve - CN VII
What is the innervation of this muscle?

Orbicularis oculi
Facial nerve - CN VII
What muscle is this?

Anterior belly of frontalis
What is the innervation of this muscle?

Lateral rectus
Abducens nerve - CN VI
What muscle is this?

Frontalis anterior belly
What muscle is this?

Hyoglossus
What muscle is this?

Sternothyroid
What muscle is this?

Posterior belly of digastric
What is the action of this muscle?

Orbicularis oculi
Closes eye
What is the innervation of this muscle?

Lateral pterygoid
mandibular branch Trigeminal nerve - CN V3
What is the innervation of this muscle?

Medial pterygoid
Mandibular branch of trigeminal - CN V3
What is the action of this muscle?

Superior oblique
Moves eye:
Depression
Abduction
Intorsion
What muscle is this?

Genioglossus
What muscle is this?

Medial rectus
What is the innervation of this muscle?

Posterior belly of digastric
Facial nerve - CN VII
What is the innervation of this muscle?

Inferior rectus
CN III - oculomotor
What is the action of this muscle?

Platysma
Tenses skin of neck
What is the action of this muscle?

Masseter
Prime muscle of jaw closure
What is the action of this muscle?

Inferior oblique
Moves eye:
Extorsion
Elevation
Abduction
What muscle is this?

Trapezius
What muscle is this?

Platysma
What muscle is this?

Thyrohyoid
What muscle is this?

Medial pterygoid
What is the action of this muscle?

Lateral pterygoid
Side to side movements
Protraction of mandible
What muscle is this?

Posterior belly of frontalis muscle
What is the innervation of this muscle?

Posterior belly of occipitofrontalis muscle
Facial nerve - CN VII
What is the action of this muscle?

Omohyoid
Depresses and retracts hyoid bone
What muscle is this?

Orbicularis oris
What muscle is this?

Superior rectus
What muscle is this?

Geniohyoid
What is the innervation of this muscle?

Medial rectus
CN III - oculomotor
What is the action of this muscle?

Thyrohyoid
Depresses hyoid
(Elevates larynx if hyoid fixed)
What is the innervation of this muscle?

Superior oblique
Trochlear nerve - CN IV
What is the action of this muscle?

Anterior belly of digastric
Depresses mandible
What muscle is this?

Buccinator
What is the action of this muscle?

Genioglossus
Protracts tongue
What muscle is this?

Sternohyoid
What is the action of this muscle?

Lateral rectus
Abducts eye
What is the innervation of this muscle?

Genioglossus
Hypoglossal nerve - CN XII
What muscle is this?

Anterior belly of digastric
What is the action of this muscle?

Sternohyoid
Depresses larynx + hyoid bone
What muscle is this?

SCM
What is the innervation of this muscle?

Styloglossus
Hypoglossal nerve - CN XII