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Magaly Cuevas
Week 7
| Question | Answer |
|---|---|
| What is homeostasis and why is it important? | It keeps the body's internal environment stable, balancing things like temperature, fluids, and blood pressure. |
| What is threshold stimulus? | It's the smallest signal needed to make a muscle fiber or neuron respond and start working. |
| What are synovial joints and what do they do? | They're freely moving joints with fluid that helps reduce friction and allow smooth movement. |
| What does the bursa do in the body? | It's a small sac filled with fluid that cushions bones, tendons, and muscles during movement. |
| What is the erector spinae muscle group responsible for? | It helps keep posture straight and supports the spine when bending or standing upright. |
| What happens at the neuromuscular junction? | The nerve releases acetylcholine to signal the muscle fiber to contract. |
| What are the three types of muscle tissue? | Skeletal, cardiac, and smooth muscles, each with different roles in movement and organ function. |
| What is the difference between flexion and extension? | Flexion bends a joint and decreases the angle; extension straightens it and increases the angle. |
| What is the function of calcium in muscle contraction? | Calcium binds to proteins so actin and myosin can connect and pull together to make muscles move. |
| What does the autonomic nervous system control? | It automatically manages actions like heartbeat, breathing, and digestion without us thinking about it. |
Created by:
mc_18