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PTA- Articular Syst
PTA Articular System from Lippert
| Question | Answer |
|---|---|
| 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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