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Chapter 28

Muscles of Mastication, Hyoid muscles, sternocleiodmastoid, trapezius muscle

QuestionAnswer
What are the four pairs muscles of mastication? Masseter Muscle Temportal Muscle medial pterygoid muscle lateral pterygoid muscle
What are the four paired suprahyoid muscles? Digastric mylohyoid geniohyoid stylohyoid
What are the four paired infrahyoid muscles? omohyoid sternohyoid sternothyroid thyrohyoid
Nemonic for infrahyoid muscles TOSS
Nemonic for suprahyoid muscles My Gravy Spoon Darling
Nemonic for muscles of mastication Mom Let Me Talk
Origin of Masseter muscle (superficial head) Inferior border of zygomatic arch
origin of masseter muscle (deep head) Medial surface of zygomatic arch and inferior border of zygomatic arch
Insertion of Masseter Muscle lateral side along lower border of the angle of the mandible
Function of the Masseter Muscle contraction elevates mandible
Origin of temporal muscle Temporal Fossa
Temporal Muscles insertion (anterior fibers/ vertical) coronoid process of manible and anterior border of ramus all the way to the third molar
Function of the temporal muscle (anterior) contraction of both fibers= elevates mandible
Function of temporal muscle (posterior fibers/horizontal) contraction of only posterior fibers+ retrusion of manible
Origin of Medial pterygoid muscle pterygoid foss along the medial surface of the lateral pterygoid plate of the sphenoid bone
origin of lateral pterygoid (superior head/small) infratemporal crest of the greater wing of the sphenoid bone
insertion of medial pterygoid muscle medial surface of angle of mandible
insertion of lateral pterygoid (superior head/small) anterior surface of the neck of the mandibular condyle as well as the articular disc of the TMJ
Function of the medial pterygoid muscle contraction elevates and protrudes the mandible
function of the lateral pterygoid muscle (superior head/small) during biting; pulls the articular disc of the TMJ and the condyle posterior back to the "centric position"
Origin of the lateral pterygoid (inferior head/large) Lateral surface of the lateral pterygoid plate of the sphenoid bone
Insertion of the lateral pterygoid (inferior head/large) anterior surface of the neck of the mandibular condyle
Function of lateral pterygoid (inferior head/large_ Contraction of both R &L = protrusion and depression/ opening of mandible R-Inferior head contracts = lateral excursion to Left side occurs L-Inferior head contracts = lateral excursion to Right side occurs
What artery is the blood supply for the muscles of mastication maxillary
What is the branch blood supply of the masseter muscle masseteric artery
What is the branch blood supply for the temporal muscle anterior and posterior deep temporal arteries
What is the branch blood supply for the medial pterygoid and lateral pterygoid muscles pterygoid artery branches
What is the main innervation of the muscles of mastication? Cranial nerve V (5)
Origin of Digastric Muscle digastric notch of mastoid process of temporal bone
insertion of digastric muscle digastric fossa
function of digastric muscle retrusion of mandible, assists with mandibular depression
origin of mylohyoid muscle mylohyoid line
insertion of mylohyoid muscle hyoid bone
function of mylohyoid muscle and geniohyoid muscle depression of mandible, elevation of hyoid bone
origin of geniohyoid muscle inferior genial tubericles of mandible
insertion of geniohyoid muscle and stylohyoid muscle hyoid bone
Origin of stylohyoid muscle styloid process
Function of stylohyoid muscle pulls hyoid bone back and up
Innervation of Geniohyoid Muscle 1st cervical nerve in the neck
Innervation of mylohyoid muscle Mylohyoid nerve branch off the mandibular branch (v3 of the V cranial nerve (trigeminal)
Innervation of Digastric Muscle (anterior belly) V3 of V cranial nerve (mandibular branch)
Innervation of Digastric Muscle (posterior belly) facial nerve (cranial nerve VII)
Origin of omohyoid muscle scapula
Insertion of omohyoid , sternohyoid, thyrohyoid muscles hyoid bone
Function of omohyoid and sternohyoid muscles pulls hyoid bone down
origin of sternohyoid muscle sternum
origin of thyrohyoid muscle oblique line of thyroid cartilage
function of sternothyroid muscle pulls larynx down
function of thyrohyoid muscle raises larynx up
innervation of thyrohyoid muscle 1st cervical nerves
innervation of omohyoid, sternoyoid, sternothyroid muscles 2nd and 3rd cervical nerves
what muscles cause mandibular protrusion right lateral pterygoid and left lateral pterygoid
what muscles cause mandibular retrusion horizontal fibers of temporal muscles and digastric muscle
what muscles cause right lateral excursion contraction of left lateral pterygoid
what muscles cause left lateral excursion contraction of right lateral pterygoid
what muscles cause mandibular elevation medial pterygoids, masseter and temporal muscles
what muscles cause mandibular depression inferior head of lateral pterygoids, hyoid muscles
What is the origin of the sternocleidomstoid muscle sternum AND medial third of clavical
what is the insertion of the sternocleidomastoid muscle mastoid process of temporal bone
function of sternocleidomastoid muscle tilts and rotates head
origin of trapezius muscle occiptal protuberance and cervical and thoracic vertabrate
insertion of trapezius muscle scapula and clavical
function of trapezius muscle elevates and rotates scapula
innervation of sternocleidomastoid and trapezius muscles motor from XII cranial nerve
The Digastric Muscle has how many bellies 2, anterior and posterior
Where is the location of the anterior belly of the digastric muscle under the chin
where is the location of the posterior belly of the digastric muscle under the ramus of the mandible
what is the tendinous loop associated with the two bellies of the digastric muscle hyoid bone
Which muscle lies superficial to the sternothyroid muscle sternohyoid muscle
What infrahyoid muscle has an intermediate tendon? omohyoid muscle (the two bellies are separated by it)
what muscle lies deep to the temporalis muscle? lateral pterygoid muscle
The two bellies of the omohyoid muscle lies deep to which muscle? sternocleidomastoid muscle
Created by: kbowman12