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PTA- Articular Syst

PTA Articular System from Lippert

QuestionAnswer
Name three functions of a joint. Allows motion, bears weight, provides stability, contains important synovial fluid.
Describe a fibrous joint. It has a thin layer of fibrous periosteum between the two bones.
Name What is the name of the fibrous joint where the bone ends interlock and in adulthood there is no movement. Suture joints of the skull.
Name a location of a fibrous joint where fibrous tissue (ligaments and interosseous membrane) holds the bones together and there is a slight amount of movement allowed. The distal tibiofibular joint or the distal radioulnar joint.
Give an example of a cartilaginous joint where there is fibrocartilage between the bones, allowing a small amount of motion and a lot of stability. Symphysis pubis or intervertebral joints.
What is the name of a TRUE joint, which allows free motion? Synovial joints.
Give an example of a nonaxial joint. Carpal and tarsal joints.
What are some of the features of synovial joints that distinguish them from other types of joints? Have joint capsule and synovial fluid, and the bones have articular cartilage at joint ends.
What kind of joints have one degree of freedom? Hinge and pivot joints.
What kind of joint, by number of axes and planes, includes the knee, elbow and interphalageal joint? These are examples of uniaxial joints.
How many axes and planes does a pivot joint have? This is an example of a uniaxial joint.
How many axes and planes does a condyloid joint have? This is an example of a biaxial joint.
How many axes and planes does a saddle joint have? This is an example of a biaxial joint.
How many axes and planes doese a ball and socket joint have? This is an example of a triaxial, or multiaxial, joint.
This structure surrounds and excases the joint and is completely sealed tightly around its outside edges. This describes the joint capsule.
What is the inner layer of the joint capsule called? This is called the synovial membrane.
What are three functions of synovial fluid? It lubricates the articular cartilage, it provide shock absorption and it provides nutrition for the articular cartilage.
This kind of cartilage is located at the ends of bones, is smooth, has no blood or nerve supply, and gets its nutrition from the synovial fluid. This is called articular cartilage (also called hylaine).
This kind of cartilage is important in weight-bearing joints and provides considerable shock absorption. This is called fibrocartilage.
This kind of cartilage is a bit more "stretchy" and allows some motion. This is called elastic cartilage.
This structure is a small sac, filled with a gel-type material, and is located in areas where there is excessive friction. This is a bursa.
Name two types of bursae. Natural and acquired.
What plane is associated with a frontal axis? The saggital plane is associated with this axis.
What plane is associated with a saggital axis? The frontal plane is associated with this axis.
What plane is associated with a vertical axis? The transverse (or horizontal) plane is associated with this axis.
Flexion and extension in the anatomic position are usually associated with this plane. These motions are usually associated with the saggital plane.
Abduction and adduction in the anatomic position are usually associated with this plane. These motions are usually associated with the frontal plane.
Medial and lateral rotation, horizontal abduction and adduction, and supination and pronation, are usually associated with this plane. These motions are usually associated with the transverse plane.
How many degrees of freedom does the hip joint exhibit? This joint exhibits three degrees of freedom.
Created by: ldesmarais
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