Answer:
Muscle contraction is the activation of tension-generating sites within muscle fibers. In physiology, muscle contraction does not necessarily mean muscle shortening because muscle tension can be produced without changes in muscle length, such as by holding a heavy book or a dumbbell at the same position. The termination of muscle contraction is followed by muscle relaxation, which is a return of the muscle fibers to their low tension-generating state.
Explanation:
Valleys waterfalls floodplains meanders and ovbow lakes are 5 features
Musculoskeletal System. When the body is stressed, muscles tense up. Muscle tension is almost a reflex reaction to stress — the body's way of guarding against injury and pain. With sudden onset stress, the muscles tense up all at once, and then release their tension when the stress passes.
Answer:
settings a physical fitness
Explanation:
- Feedback of the products and services.
- discoveries frauds and quacks
- selection of goods and services.
- use of hygienic goods and services.
- provision of safe drinking water and basic sanitation.
- food supply and proper nutrition.
- identifying and controlling prevailing health problems.
- provision of essential drugs.
Answer:
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