Are articular discs made of hyaline cartilage?
Louis. The articular surfaces of the TMJ are made up of fibrocartilage. This distinguishes the TMJ from other joints, which are usually made up of hyaline cartilage (Ide et al., 1991). As mentioned earlier, the articular disk divides the joint into two compartments, the superior and inferior joint cavities.
What type of cartilage is the articular disc?
fibrocartilage
The articular disk (or disc) is a thin, oval plate of fibrocartilage present in several joints which separates synovial cavities.
What are articular discs as the one in the temporomandibular joint made of?
Articular disc: The articular disc of the TMJ rests between the mandibular condyle and the mandibular fossa of the temporal bone (Fig. 13.7A). This prominent structure consists of dense fibrous connective tissue.
What are articular discs as the one in the temporomandibular joint made of quizlet?
both hyaline cartilage , which covers the articular surface joints, and fibrocartilage , which unites adjoining bones. List the six basic features of synovial joints. -An articular disc is composed of fibrocartilage, and it is located within the joint cavity .
What is the articular cartilage?
The bones that meet at synovial joints are covered with a thin layer of cartilage known as articular cartilage. (Articular simply means “having to do with joints.”) Articular cartilage forms a smooth, durable covering (almost the consistency of linoleum) at the end of each bone in the joint.
Does articular cartilage have Perichondrium?
Articular hyaline cartilage and fibrocartilage do not have a perichondrium. Hyaline cartilage is the most common cartilage in the body. It is bluish-white and translucent.
What is the TMJ made of?
The temporomandibular joint (TMJ) is formed by the articulation of the mandible and the temporal bone of the cranium.
What joints have articular discs?
Disks are found in the temporomandibular joint of the lower jaw, the sternoclavicular (breastbone and collarbone) joint, and the ulnocarpal (inner forearm bone and wrist) joint. A pair of menisci is found in each knee joint, one between each femoral condyle and its female tibial counterpart.
Which type of joint is composed of fibrocartilage?
Cartilaginous joints
Cartilaginous joints are connected entirely by cartilage (fibrocartilage or hyaline). Cartilaginous joints allow more movement between bones than a fibrous joint but less than the highly mobile synovial joint.
What are the functions of articular cartilage synovial fluid and articular discs quizlet?
Articular cartilage: absorbs shock and reduces friction between opposing bones.
What is an articular disc?
Articular disks (Menisci) Disks or wedges of fibrocartilage that separate the articular surfaces. They extend inward from the articular capsule and partially or completely divide the synovial cavity in two. Furthermore, do all synovial joints have articular discs?
Do all synovial joints have articular discs?
Many, but not all, synovial joints also contain additional structures: Articular discs or menisci-the fibrocartilage pads between opposing surfaces in a joint. Articular fat pads-adipose tissue pads that protect the articular cartilage, as seen in the infrapatellar fat pad in the knee.
What is a menisci disk?
Articular disks (Menisci) Disks or wedges of fibrocartilage that separate the articular surfaces. They extend inward from the articular capsule and partially or completely divide the synovial cavity in two.
How is the articular disk attached to the temporal bone?
An articular disk separates the fossa and articular surface of the head of the mandible. The disk attaches laterally to the head and medially to the temporal bone by ligamentous extensions. Capsular attachments to the disk are found circumferentially. The lateral aspect of the joint capsule is strengthened by the lateral temporomandibular ligament.