Shared Flashcard Set

Details

muscles of mastication
origin, insertion, function, innervation, vascular supply
31
Anatomy
Graduate
04/11/2010

Additional Anatomy Flashcards

 


 

Cards

Term
what are the muscles of mastication?
Definition

temporalis

masseter (superficial and deep)

medial pterygoid (superficial and deep)

lateral pterygoid (upper and lower)

Term
what is the origin of the temporalis muscle
Definition
the temporal fossa and fascia
Term
what is the insertion of the temporalis muscle
Definition
the coronoid process and the anterior border of the mandibular ramus
Term
what is the function of the temporalis
Definition

it elevates the mandible

the posterior 1/3 retrudes the mandible

Term
what is the nerve supply for the temporalis
Definition
the anterior and posterior deep temporal branches from V3
Term
what is the origin of the superficial portion of the masseter
Definition
inferior border of the anterior 2/3 of the zygomatic arch
Term
what is the insertion of the superficial part of the masseter
Definition

the angle of the mandible

the inferior and lateral parts of the ramus

Term
what is the function of the masseter muscle (both portions)
Definition
elevation of the mandible
Term
what is the nerve supply of both portions of the masseter muscle
Definition
masseteric branch from V3
Term
what is the origin of the deep head of the masseter muscle
Definition
medial border of the zygomatic arch
Term
what is the insertion of the deep head of the masseter muscle
Definition
coronoid process
Term
which head of the masseter is larger?
Definition
the superficial head is larger than the deep head
Term
what is the origin of the medial pterygoid muscle
Definition
medial surface of lateral pterygoid plate?
Term
what is the insertion point of of the medial pterygoid
Definition
ramus and angle
Term
what is the action of the medial pterygoid muscle
Definition

elevate the mandible

protrude mandible

lateral excursion of the mandible

Term
what is the innervation of the medial pterygoid muscle
Definition
medial pterygoid branch from V3
Term
which muscle is the deepest muscle of mastication
Definition
medial pterygoid muscle
Term
what is the origin of the upper head of the lateral pterygoid muscle
Definition
infratemporal crest
Term
what is the insertion point for the upper head of the lateral pterygoid muscle
Definition
capsule of the TMJ
Term
what is the origin of the lower head of the pterygoid muscle
Definition
lateral surface of the lateral pterygoid plate
Term
what is the insertion point of the lower head of the lateral pterygoid muscle
Definition
the neck of the condyle
Term
what is the action of the lateral pterygoid plate?
Definition

depress and protrude the mandible

pull the articulator disc forward

Term
what innervates the lateral pterygoid muscle
Definition
the lateral pterygoid branch for each head from V3
Term
what part of the maxillary artery innervates the muscles of mastication?
Definition
the 2nd part: the pterygoid part.
Term
what are the branches of the pterygoid part of V2
Definition

anterior deep temporal

posterior deep temporal

masseteric

pterygoid branches

buccal branches

Term
what artery supplies the temporal muscle
Definition
the anteriro and posterior deep temporal arteries
Term
what artery supplies the deep surface of the masseter msucle
Definition
the masseteric artery
Term
what artery supplies the medial and lateral pterygoid muscles
Definition
the pterygoid branch arteries
Term
what artery supplies the buccinator
Definition
the buccal artery
Term
what artery passes deep into the temporalis fascia an temporalis muscle?
Definition
the middle temporal artery arising from the superficial artery 
Term
what artery supplies the parotid gland, duct, and masseter as it passes them?
Definition
the transverse facial artery arising from the superficial temporal artery
Supporting users have an ad free experience!