Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
|
Name the two general goals of dental treatment:
|
1. Function
2. Esthetics |
|
|
What are the six elements of a functional stomatognathic (mouth, jaws, and closely associated structures) system?
|
Bones
Ligaments TMJ Muscles Nerves Teeth |
|
|
Name the type of joint that includes sutures and teeth joints?
What is the tooth joint called specifically? |
Synarthroses and Gomphosis
|
|
|
What is the term for a moveable joint?
|
Diarthroses or synovial
|
|
|
The TMJ is the only joint of this kind. What is it?
|
Ginglymoarthrodial joint
|
|
|
Name the primary and secondary functions of ligaments.
|
Primary: restrain degree of movement
Secondary: directional control |
|
|
Type I muscle fibers are also known as ______?
|
Slow twitch
Oxidative |
|
|
Type II muscle fibers are also known as _____?
|
Fast twitch
Glycolytic |
|
|
What part of the TMJ contains hyaline cartilage?
|
None
|
|
|
The disk is comprised of what type of cartilage
|
Fibrocartilage
|
|
|
What parts of the body contain fibrocartilage?
|
TMJ
Intervertebral disks Meniscus of the knee |
|
|
Define "boundary" with regard to the synovial membrane of the TMJ.
|
Boundary occurs when the joint is moved and the synovial fluid is forced from one area of the cavity to another.
|
|
|
Define "weeping" with regard to the synovial membrane of the TMJ.
|
Weeping is the absorption of synovial fluid by the membrane. Helps eliminate friction in the compressed joint.
|
|
|
The Glenoid Fossa is part of what bone?
|
Temporal bone
|
|
|
What bony structure prevents the condyle from translating directly forward?
|
Articular eminence
|
|
|
What are the three functions of the temporomandibular (capsular) ligament?
|
1. encapsulate TMJ
2. Retain synovial fluid 3. limit movement |
|
|
What are the specific functions of the horizontal and oblique portions of the temporomandibular ligament?
|
Horizontal:
limit retrusion of mandible (when you get punched in jaw) Oblique: limit rotation of mandible |
|
|
What are the two functions of the collateral ligaments?
|
1. Bind the disk to the condyle medially and laterally
2. Divide the synovial spaces |
|
|
What is the function of the Stylomandibular ligament?
|
Limit protrusion
|
|
|
Which ligament of the TMJ is just accessory?
|
Sphenomandibular ligament
|
|
|
Which portion of the Temporalis muscle aids in retracting the mandible?
|
Middle
|
|
|
Name the origin and attachment of the Medial Pterygoid muscle.
|
Origin: medial side of lateral pterygoid plate and maxillary tubercle
Insertion: medial surface of ramus |
|
|
The suprahyoid and infrahyoid muscles generally act to _______ the mandible.
|
Depress
|
|
|
Which muscle of is generally the most sore when a person has TMD?
|
Lateral Pterygoid
|
|
|
Name the origin and insertion of the superior belly of the Lateral Pterygoid.
|
Origin: greater wing of the sphenoid bone
Insertion: articular disk and head of condyle |
|
|
Name the origin and insertion of the inferior belly of the lateral pterygoid.
|
Origin: lateral side of the lateral pterygoid plate
Insertion: pterygoid fovea of condylar process |
|
|
Name the functions of both bellies of the lateral pterygoid muscle.
|
Superior belly: stabilize disk on closure
Inferior belly: protrude mandible |
|
|
Rotation of the mandible occurs in the _______ space and is limited to about ______ mm by the _______ portion of the TM ligament.
|
-Inferior synovial
-25 -Oblique |
|
|
Translation of the condyle occurs in the _________ space.
|
superior synovial
|
|
|
The retrodiscal tissue in comprised of three portions, the superior lamina, middle portion, and inferior lamina. What are their characteristics?
|
Superior lamina: elastic CT
Middle portion: venous plexus Inferior lamina: attaches disk to condyle |
