What is the temporomandibular joint quizlet?
What is the temporomandibular joint quizlet?
consists of articulations between 3 surfaces; the mandibular fossa & articular tubercle (from the squamous part of the temporal bone), & the head of mandible. You just studied 12 terms!
What are the two basic movements of the temporomandibular joint?
MOVEMENTS OF THE TMJ The basic anatomical function of the mandible is to: 1) open and close; 2) protrusion and retru- sion; and 3) lateral deviation which are provided through two types of basic movements. These movements are termed rotation and translation. Rotation occurs in the lower portion of the joint.
What are the ligaments of temporomandibular joint?
Four ligaments support the TMJ: the collateral, temporomandibular, stylomandibular, and sphenomandibular ligaments. The TMJ is vascularized by the deep auricular, superficial temporal, and anterior tympanic arteries.
How many bones make up the temporomandibular joint?
Bottom, The articular disc, which divides the joint into two, is composed of fibrocartilaginous tissue positioned between the two bones that form the joint.
What is the function of the temporomandibular joint quizlet?
is the indirect articulation of the head of the MANDIBULAR CONDYLE and the GLENOID FOSSA of the TEMPORAL BONE.
What is the function of the temporomandibular joint?
Movements. Movements at this joint are produced by the muscles of mastication, and the hyoid muscles. The two divisions of the temporomandibular joint have different functions. The upper part of the joint allows protrusion and retraction of the mandible – the anterior and posterior movements of the jaw.
What movement occurs at the temporomandibular joint?
Movements. A variety of movements occur at the TMJ. These movements are mandibular depression, elevation, lateral deviation (which occurs to both the right and left sides), retrusion and protrusion.
What does the temporomandibular joint do?
The TMJs are among the most complex joints in the body. These joints, along with several muscles, allow the mandible to move up and down, side to side, and forward and back. When the mandible and the joints are properly aligned, smooth muscle actions, such as chewing, talking, yawning, and swallowing, can take place.
Why is the temporomandibular joint important?
Located on each side of the head, your TMJ work together when you chew, speak or swallow and include muscles and ligaments as well as the jaw bone. They also control the lower jaw (mandible) as it moves forward, backward and side to side. Each TMJ has a disc between the ball and socket.
What type of sign or symptom may a patient who is experiencing temporomandibular disorder exhibit?
Several symptoms have been associated with TMJ disorders in patients presenting with TMJ dysfunction syndrome and these includes pain, biting or chewing difficulty or discomfort, clicking, popping or grating sound when opening or closing the mouth, dull ache in the face, earache, headache, jaw pain or tenderness of the …
What is another term for the articular fossa of the temporomandibular joint?
The first statement is false; the second is true. What is another term used for articular fossa of the temporomandibular joint? Temporal. Glenoid. Pterygoid.
What makes up the structure of the temporomandibular joint?
The Temporomandibular Joint 1 Articulating Surfaces. The temporomandibular joint consists of articulations between three surfaces; the mandibular fossa and articular tubercle (from the squamous part of the temporal bone ), and the head of 2 Ligaments. There are three extracapsular ligaments. 3 Movements. 4 Neurovascular supply. …
How does the lateral ligament help the temporomandibular joint?
They act to stablise the temporomandibular joint. Lateral ligament – runs from the beginning of the articular tubule to the mandibular neck. It is a thickening of the joint capsule, and acts to prevent posterior dislocation of the joint. Sphenomandibular ligament – originates from the sphenoid spine, and attaches to the mandible.
What causes a dislocation of the temporomandibular joint?
The facial and auriculotemporal nerves run close to the joint, and can be damaged if the injury is traumatic. Posterior dislocations of the TMJ are possible, but very rare, requiring a large amount of force to overcome the postglenoid tubercle and strong intrinsic lateral ligament. Arthiritis can cause inflammation of the temporomandibular joint.
Where does the lateral ligament of the mandible originate?
Lateral ligament – runs from the beginning of the articular tubule to the mandibular neck. It is a thickening of the joint capsule, and acts to prevent posterior dislocation of the joint. Sphenomandibular ligament – originates from the sphenoid spine, and attaches to the mandible.
Why is the temporomandibular joint(TMJ) important?
The temporomandibular joint (TMJ) or jaw joint is a bi-arthroidal hinge joint that allows the complex movements necessary for life. The TMJ is the joint between condylar head of the mandible and the mandibular fossa of the temporal bone. This system is made up of the TMJ, teeth and soft tissue. This system plays a role in breathing, eating and speech.
What is temporomandibular joint pain?
Temporomandibular disorder (TMD, also termed “temporomandibular joint pain-dysfunction syndrome”) is pain and dysfunction of the TMJ and the muscles of mastication (the muscles that move the jaw).
What is the abbreviation for temporomandibular joint?
The term “TMJ” is the abbreviation for temporomandibular joint. The temporomandibular joint is, in essence, the joint of the skull at which the lower jaw (mandible) hinges from the bone on the side of the skull (temporal bone). Hence, the term temporomandibular joint (TMJ).