Question

в результате чередование сокращения и расслабления мышц человек двигается и выполняет различные действия Почему иногда сохранившиеся мышцы не могут расслабиться или, наоборот, освободившиеся мысли могут сократиться? (20 баллов)​

Answer 1

Ответ:

Ответ:Рефлекторная особенность различных органов и систем органов связана с процессами возбуждения и торможения в центральной нервной системе. Появление возбуждения в одном нервном центре вызывает торможение в другом. Торможение является обратным отражением возбуждения и препятствует его исчезновению, ослаблению или усилению.

Объяснение:Поэтому сократившиеся мышцы не могут расслабиться или, наоборот, расслабившиеся мышцы не могут сократиться.

Answer 2

Why do muscles sometimes fail to relax or thoughts can contract?

Muscle contraction and relaxation are complex processes controlled by the nervous system. While the exact mechanisms can vary depending on the specific situation, there are a few common reasons why muscles may fail to relax or thoughts can contract:

1. Muscle Spasms or Cramps: Muscle spasms or cramps occur when muscles involuntarily contract and fail to relax. This can be caused by various factors, including muscle fatigue, dehydration, electrolyte imbalances, muscle strain, or nerve compression [[1]].

2. Muscle Hypertonicity: Hypertonicity refers to increased muscle tone or tension, which can make it difficult for muscles to relax fully. It can be caused by conditions such as muscle stiffness, muscle imbalances, neurological disorders, or chronic stress [[2]].

3. Nervous System Disorders: Certain nervous system disorders can disrupt the normal control of muscle contraction and relaxation. For example, conditions like dystonia or spasticity can cause involuntary muscle contractions or spasms [[3]].

4. Psychological Factors: Psychological factors, such as stress, anxiety, or emotional tension, can affect muscle tension and relaxation. When a person is under stress, their muscles may remain tense and fail to relax properly [[4]].

5. Medication Side Effects: Some medications can affect muscle relaxation. For example, certain muscle relaxants or medications used to treat neurological conditions may have side effects that interfere with muscle relaxation [[5]].

It's important to note that the specific reasons for muscles failing to relax or thoughts contracting can vary depending on the individual and the context. If you are experiencing persistent muscle tension or difficulty relaxing, it is recommended to consult with a healthcare professional for a proper evaluation and guidance.