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Princess Lyschl
Physio Week 6
| Question | Answer |
|---|---|
| Define Synarthrosis | An immovable joint, such as the sutures between bones of the skull. |
| What type of joint allows for free movement and is the most common in the body? | Diarthrosis (synovial joint) |
| Define Articular cartilage | Smooth cartilage covering the ends of bones in a synovial joint; reduces friction and absorbs shock. |
| Fill-in-the-blank: The joint capsule and synovial membrane produce __________, which lubricates and nourishes the joint. | Synovial fluid |
| What are the three types of fibrous joints? | Sutures, syndesmoses, and gomphoses. |
| Define Sarcomere | The functional unit of a muscle fiber; defined as the segment between two Z lines. |
| What happens to the sarcomere during muscle contraction? | The sarcomere shortens as actin and myosin filaments slide past each other. |
| Fill-in-the-blank: The neurotransmitter that triggers muscle contraction at the neuromuscular junction is __________. | Acetylcholine (ACh |
| What molecule provides the energy required for muscle contraction and relaxation? | Adenosine triphosphate (ATP) |
| Define Sliding Filament Theory | A model describing how muscle contraction occurs as thin filaments slide past thick filaments, shortening the muscle fiber. |
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princesslyschl