Name: Masseter Muscle

Origin:

superficial portion: lower border of ________ ________ of zygomatic arch

deep portion: lower border of ________ ________ of zygomatic arch; ________ surface of zygomatic arch Insertion: ________ surface of mandible extending from basal part of coronoid process to ________ of mandible

Temporalis muscle:

Origin: floor of temporal fossa (sup. ________ line)

Insertion: medial surface, apex, anterior and posterior border of ________ process; superficial ________- anterior border of coronoid process; deep ________- internal oblique line

Nerve supply: deep temporal branch of ________ nerve

Action: resting ________ (bilateral); ________ (bilateral); ________ (bilateral); ipsilateral ________ (unilateral)

Temporal

coronoid, tendon, tendon

mandibular

tonus, elevation, retrusion, excursion

Medial pterygoid muscle

Origin:

superficial head: ________ tuberosity; - lateral surface of ________ process of palatine bone

deep head: ________ fossa; medial surface of ________ pterygoid plate

Insertion: medial surface of ________ angle

Nerve supply: nerve to medial pterygoid

Action: _________ (bilateral); ________ (bilateral); contralateral ________ (unilateral)

maxillary, pyramidal

pterygoid, lateral

mandibular

elevation, protrusion, excursion

Lateral pterygoid muscle

Origin:

superior head:  infratemporal surface and infratemporal ________ of ________ wing of sphenoid bone

inferior head: lateral surface of lateral pterygoid plate

Insertion: - ____medial surface of _________ capsule; anterior border of articular ________; anterior surface of mandibular ________

Action: 2 HEADS PULL THE CONDYLAR PROCESS ________.   THE SUP. HEAD OR SPHENOMENISCUS PULLS THE ARTICULAR ________ TOWARD THE ARTICULAR ________.

crest, greater

antero, articular, disc, neck

FORWARD, DISC, EMINENCE

MINIMUM SCALENE Muscle:

Attachments: ANTERIOR TUBERCLE OF ________ ________ PROCESS AND INSERTS ONTO THE ________ MEMBRANE (SIBSON’S FASCIA) COVERING THE CUPULA OF THE LUNG.

Nerve innervation: BRANCH OF ________

Action: THIS INSERTION ________ THE MEMBRANE MAINTAINING ITS ORIENTATION IN THE ROOT OF THE NECK.  THE MUSCLE IS INNERVATED BY A BRANCH OF C7.

C7 T, SUPRAPLEURAL

C7

SUPPORTS