Describe the key components of a synovial joint, and identify their functions
What will be an ideal response?
The key components of a synovial joint are a fibrous joint (articular) capsule, which surrounds the joint; articular cartilage, which resembles hyaline cartilage and covers the articulating bone surfaces; a synovial membrane, which lines the articular capsule and secretes synovial fluid that lubricates, distributes nutrients, and absorbs shocks; and a joint cavity that is filled with synovial fluid.
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During isovolumetric contraction, the atria are in
A. systole. B. diastole.
Severe injuries and burns to the skin result in scars that are
A. produced by stratum basale keratinocytes, which effectively bind damaged skin parts together. B. produced by chondrocytes and made mainly of desmosomes. C. produced by fibroblasts and made mainly of collagen. D. made by macrophages, which produce a dense granulation tissue. E. fully functional regenerations.
Match the substance necessary for clotting with its particular role.A. A mixture of lipoproteins released from injured tissueB. Converts prothrombin to thrombinC. The insoluble protein that forms the network of the clotD. Needed by the liver to produce prothrombinE. Fibrin-stabilizing factorFibrin
Fill in the blank(s) with the appropriate word(s).
Which body region is controlled by the largest area of the motor cortex?
A. Fingers B. Shoulder C. Toes D. Neck E. Trunk