JOINTS Flashcards
What is Synarthroses, Diarthroses, and Amphiarthroses
Synarthroses - immoble (skull sutures)
Amphiarthroses - barely moveable (pelvic symphasis)
Diarthroses - freely very mobile (knee joint)
True or False: All synovial joints are considered diarthroses.
True; synovial joints are freely moving so they are considered diarthroses
The ___________________ space is filled with synovial fluid.
Joint cavity
What are joints?
When two or more bones are held together by CT
What type of tissue are ligaments, cell type, fibers of their matrix, location in joints, and major functuin
Ligaments are Dense regular CT with fibroblast cells. They consist in a collagen fiber matrix in tendons. They attach muscle and bone together
What is Hyaline Cartliage?
Hyaline cartilage consists of chondrocytes in a collagen matrix, usually located on the surface of synovial joints. Hyaline function resists compression and protects joint surface
What is Fibrocartilage?
Fibrocartilage consists of chondrocytes in a collagen matrix, usually located is fibrous joints like the pubic symphasis and articular disks. Fibrocartilage functions in absorbing compression ad tensile strength
Which of the following structure(s) will cover the inner surfaces of a joint cavity? Choose all that apply
A) Articular cartilage
B) Reinforcing ligament
C) Nervous tissue
D) Synovial membrane
A) Articular Cartilage and D) Synovial membrane
Many neurons of joints help to inform the brain about the activity of the joint, including pain or position of the joint. These types of neurons are classified as _____________________ neurons.
Afferent SOMATIC (SAme)
Which of the following types of tissue contains chondrocytes?
Fibrocartilage and Hyaline Cartilage
Which of the following joints will have a synovial membrane?
Diathroses
Which of the following diseases is caused by direct damage to articular cartilage, as a result of aging and wear and tear?
A) Osteoarthritis
B) Rheumatoid arthritis
C) Gout
D) Bursitis
A) Osetoarthritis
What is Gout and it’s symptoms?
Urate crystals accumulate in joint cavity due to high levels in blood resulting in sudden attacks of sharp pai in joints
In Rheumatoid arthritis, what does the body attack?
It’s own synovial membrane causing inflamation of the joints
Which of the following structures assist with joint function by reducing friction and providing cushion?
Fat pads and synovial fluids
Why does damage to fibrocartilaginous articular disks (like the menisci of the knee) typically take a very long time to heal and may possibly even require surgery?
Articular disks are avascular and depend on diffusion to receive nutrient
A syndesmosis is a type of joint where two bones are held together by tight ligaments. One example is the interosseous membrane, a ligament that connects the shafts of the two bones of the forearm (radius and ulna). This connection allows limited movement between the forearm bones. What type of joint would this be classified as?
Amphiarthroses
The temperomandibular joint (TMJ) is a joint between the skull and the mandible (jaw bone). This joint contains an articular disk within the joint cavity between the two bones. What type of joint would this be classified as?
Diathroses because it is a synovial joint
True or False: Blood vessels enter the joint cavity
False
What is Collateral Circulation around joints?
a network of blood vessels that provides multiple paths for blood to flow around a joint
What structural classification is an ephiphyseal plate?
(Assume that growth is still occurring.)
Cartilage
The menisci are C-shaped fibrocartilaginous pads in the knee joint cavity. The outer edge of the menisci are attached to the synovial membrane. Which meniscal injury would be more likely to heal on its own without surgery?
Closer to the menisci edge
