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Exam #5
skeletal aspects,muscles of mastication,tmj
111
Anatomy
Graduate
12/04/2013

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Cards

Term
The least moveable structure
Definition
Origin
Term
The more moveable structure
Definition
Insertion
Term
The work accomplished when the muscle contracts; the insertion moves to the origin
Definition
Action
Term
Muscles of mastication
Definition
Masseter,MedialPterygoid,Lateral Pterygoid, and Temporalis
Term
What are the neurocranium bones?
Definition
Frontal bone, Sphenoid bone, Ethmoid bone, Occipital bone, Temporal Bone, 2 parietal bones
Term
What are the viscerocranium bones?
Definition
Vomer,nasal,lacrimal,inferior nasal conchae,zygomatic, 2 palatine bones, 2 maxillary bones
Term
what are the paranasal sinuses? and what is their function?
Definition
Air filled cavities of different size, func is to lighten the skull
Term
The 2 bones that form the TMJ are?
Definition
temporal bone and mandibular bone
Term

The 2 bones that form the hard palate are?

 

Definition
anterior of the maxilla, anterior of the palatine bones
Term
What 2 bones form the nasal septum?
Definition
Vomer and ethmoid
Term
What 2 bones form the zygomatic arch?
Definition
Zygomatic process of temporal bone and temporal process of zygomatic bone
Term
A white or light area on a radiograph is?
Definition
Radiopaque
Term
A short circular opening through a bone is?
Definition
foramen
Term
A linear prominence of bone?
Definition
Ridge
Term
A long tubular opening through bone is?
Definition
Canal
Term
A black or dark area seen on a radiograph is?
Definition
Radiolucent
Term
A marked prominence of bone is?
Definition
Process
Term
A depression on a bony structure is?
Definition
Fossa
Term
Why are the Maxillary sinuses important in dentistry?
Definition
Because they extend from the posterior of the canines to third molar and may extend down and around root tips of maxillary teeth
Term
What is the origin of the Temporalis
Definition
Temporal Fossa
Term
What is the insertion of the Temporalis?
Definition
Coronoid Process
Term
What is the ACTION of the Temporalis
Definition
Elevation and Retraction of mandible
Term
What is the ORIGIN of the Masseter Muscle?
Definition
Zygomatic Arch
Term
What is the INSERTION of the Masseter?
Definition
Lateral Angle of the Mandible
Term
What is the ACTION of the Masseter?
Definition
Elevation of Mandible
Term
What is the ORIGIN of the MEdial Pterygoid?
Definition

1. MEdial side of Lateral Pterygoid plate

2.Maxillary Tuberosity

Term
What is the INSERTION of the MEdial Pterygoid?
Definition
Medial Angle of the Mandible
Term
What is the ACTION of the MEdial Pterygoid?
Definition
Elevation of the Mandible
Term
What is the ORIGIN of the Lateral Pterygoid?
Definition

1.Lateral side of Lateral Pterygoid Plate

2.Greater Wing of Sphenoid

Term
What is the INSERTION of the Lateral Pterygoid
Definition

1.TMJ

2.Neck of Condyle

Term
What is the ACTION of the Lateral Pterygoid
Definition
Depression,Protrusion, and lateral excursion aka. side to side
Term
The buccinator is a muscle of mastication..true or false?
Definition
False
Term
What is the Muscle of Facial Expression
Definition
Buccinator
Term
What is the function of the Buccinator?
Definition
Aids in mastication, pushes food from the vestibule back onto occlusal surface during chewing
Term
What is the ORIGIN of the buccanator?
Definition
Alveolar process of Mandible
Term
What is the INSERTION of the Buccinator?
Definition
Orbiculris Oris Muscle
Term
What is the ACTION of the Buccinator?
Definition
Compresses the cheek into the teeth for chewing
Term
What are the Extrinsic muscles of the tongue?
Definition
Genioglossus,Styloglossus,Hyoglossus,Palatoglossus
Term
What are the Intrinsic muscles of the tongue?
Definition
Superior Longitudinal, Inferior Longitudinal,Transversus, Verticalis
Term
What is the ORIGIN of the Genioglossus?
Definition
Genial tubercules
Term
What is the INSERTION of the Genioglossus?
Definition
Ventral surface of tongue
Term
What is the ACTION of the Genioglossus?
Definition

Protrudes and Depresses Tongue/

Pulls tongue -->forward

Term
What is the Origin of the Styloglossus?
Definition
Styloid process
Term
What is the INSERTION of the Styloglossus?
Definition
Ventral/Lateral surface of the tongue
Term
WHat is the ACTION of the Styloglossus?
Definition

Retracts the tongue/

Draws tongue back

Term
What is the Origin of the Hyoglossus?
Definition
Hyoid Bone
Term
What is the INSERTION of the Hyoglossus?
Definition
Ventral/Lateral surface of the tongue
Term
What is the ACTION of the Hyoglossus?
Definition

Depresses Tongue/

Side of tongue down

Term
What is the ORIGIN of the Palatoglossus?
Definition
Posterior hard palate and anterior soft palate
Term
What is the INSERTION of the palatoglosus?
Definition
Posterior and Lateral surface of tongue
Term
What is the ACTION of the Palatoglossus?
Definition

Elevates and arches tongue/

Pulls side of tongue up and back

Term
What way do the fibers of the Superior Longitudinal muscle go and where are they located?
Definition
They are located on the top of the tongue and run anterior to posterior
Term

What way do the Inferior Longitudinal muscle fibers run and where is the muscle located?

 

Definition
The fibers run anterior to posterior and its located on the bottom of the tongue
Term
What way do the fibers run in the transverus muscle of the tongue?
Definition
They begin at the median sulcus and run left to right
Term
What way do the Verticalis muscle fibers of the tongue run?
Definition
Fibers run from top to bottom
Term
What is the ACTION of the Superior Longitudinal Muscle of the Tongue?
Definition
Shorten and Fatten the tongue
Term
What is the ACTION of the Inferior Longitudinal muscle of the tongue?
Definition
Shorten and Fatten
Term
What is the ACTION of the Transversus muscle of the tongue?
Definition

Lenghten and narrow/

Thin and long

Term
What is the ACTION of the Verticalis muscle of the tongue?
Definition

Lengthen and Narrow/

Thin and Long

Term
What is the function of the Hyoid Muscles?
Definition
Assist in mastication and swallowing
Term
What are the muscles of the Soft Palate?
Definition
Palatoglossus and Palatopharyngeous
Term
What is the function of the Suprahyoid Muscles?
Definition
Elevates hyoid bone and layrnx;depresses mandible
Term
What is the muscle that forms the floor of the mouth?
Definition
Mylohyoid
Term
What are the Surprahyoid muscles?
Definition
Digastric,Mylohyoid,Stylohyoid,Geniohyoid
Term
What are the Infrahyoid Muscles?
Definition
Sternothyroid,Sternohyoid,Omohyoid,Thyrohyoid
Term
What is the function of the Infrahyoid muscles?
Definition
Depress hyoid bone
Term
What is a joint?
Definition
A site of union between 2 bones
Term
TMJ is a joint on each side of the head that allows for
Definition
movement of the mandible for speech and mastication
Term
Where is the Upper Synovial Cavity located?
Definition
between disc and mandibular fossa
Term
Where is the lower Synovial Cavity located?
Definition
between the disc and condyle
Term
Synovial Fluid (?) the joint
Definition
lubricates
Term
The condyle will come in contact with the bone and create a clicking sound when?
Definition
The articular disc is displaced to the anterior
Term
The Articular disc (aka Meniscus) is attached to?
Definition
The medial and lateral poles of the condyle
Term
The Articular disc should be between the (?) and the (?) to prevent contact of the bones
Definition
Temporal fossa and the condyle
Term
What are the ligaments associated with TMJ?
Definition
Temporomandibular ligament, Sphenomandibular Ligament, and Stylomandibular ligament
Term
The Temporomandibular ligament is located on the (?) side of each joint
Definition
lateral
Term
The Sphenomandibular ligament extends from the (?) to the (?) of the mandible and is the (?) aspect.
Definition
Sphenoid bone to the lingula of the mandible and is the medial aspect
Term
The stylomandibular Ligament runs from the (?) of the temporal bone to the (?)
Definition
Styloid process to angle of mandible
Term
Fibrous capsule that encloses the TMJ is ?
Definition
Joint capsule
Term
During (?) the maxillary teeth and mandibular teeth are 2-3mm aparrt; there is no muscle contraction
Definition
Rest position
Term
During the (?) the lower and upper teeth are occluded with the most complete and comfortable intercusption
Definition
Centric Occlusion
Term
(?) is the most retruded relationship between the mand and max, the condyles are in their most upward,backward,and unstrained position in the mandibular fossa
Definition
Centric relation
Term
Lower jaw moves forward
Definition
protrusion
Term
lower jaw moves backward
Definition
retraction
Term
Closing of the mouth
Definition
Elevation
Term
Opening of the mouth
Definition
Depression
Term
Lower jaw shifts side to side
Definition
Lateral Excursion
Term
Occlusion to rest position is termed
Definition
Hinge Rotation
Term
Rest Position to mouth open wide is termed
Definition
Gliding
Term
some Disorders of the joint are
Definition
TMD, Subluxation, Clicking/popping,Arthritis
Term
Dislocation of both joints where condyle goes beyond articular eminence
Definition
Subluxation
Term
Disk Displacement causes
Definition
Clicking and Popping of the TMJ
Term
Inflammation of the joint is
Definition
Arthritis
Term
Causes of TMD
Definition
Trauma,opening to wide,bruxism,malocclusion,orthodontics, STRESS, Systemic diseases such as arthritis and lupus, Ergonomics
Term
Symptoms of TMD are
Definition
Jaw pain and stiffness,headaches/migraines,toothaches/sensitivity,tender joint area,difficulty opening mouth,pain/fatigue when eating,clicking or popping in joint,cervical neck pain,toothwear,dizziness,earaches,numbness of fingers
Term
Night guard aka occlusal splint is a treatment option for
Definition
TMD and Bruxism
Term
Treatment for TMD includes
Definition
medication,rest,moist heat,exercises,physical therapy,stress management, occlusal adjustment, TMJ replacement
Term
When the mandible is protruding the TMJ movement is?
Definition
Gliding in both upper synovial cavities
Term
When the mandible is ratracting the TMJ movement is?
Definition
Gliding in both upper synovial cavities
Term
When the mandible is elevated and retracted the TMJ movement is?
Definition
Gliding in both upper synovial cavities and Rotation in both lower synovial cavities
Term
When the mandible is depressed and protruded the TMJ is?
Definition
Gliding in both upper synovial cavities and rotation in both lower synovial cavities
Term
When the mandible shifts from side to side the TMJ is
Definition
Gliding in one upper synovial cavity and rotation in the opposite upper synovial cavity
Term
Muscle involved in TMJ movement when the mandible is protruding is?
Definition
Lateral Pterygoid
Term
Muscles involved in TMJ movement when the mandible is retracted are?
Definition
Temporalis and Digastric
Term
Muscles involved in TMJ movement when the mandible is elevated and retracted (closed) are?
Definition
Masseter,Temporalis,Medial Pterygoid
Term
Muscles involved in TMJ movement when the mandible is depressed and protruded (open) are?
Definition
Lateral Pterygoid and Hyoid Muscles
Term
Muscle involved in TMJ movement when the mandible is moving from side to side are?
Definition
One muscle of the Lateral Pterygoid
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