Question

Запиши результаты практической работы с 19 ч.2 обхват опущенной вниз руки. Обхват руки,согнутой в локте. При сокращение мышцы становятся......

Answer 1

Надо измерить свою руку , примерно опущенная вниз рука - 23 см, а согнутая в локте -25см.  При сокращении мышцы становятся короче и толще.
на передней стороне руки выше локтя мышца называется бицепс, а на задней- трицепс. 

Answer 2

Practical Work Results for Arm Circumference Measurement

The results of the practical work involving the measurement of the arm circumference in two different positions are as follows:

1. Arm Circumference with Arm Hanging Down: - The arm circumference measurement when the arm is hanging down is [result]. - This measurement is taken with the arm relaxed and hanging naturally by the side of the body.

2. Arm Circumference with Arm Bent at the Elbow: - The arm circumference measurement when the arm is bent at the elbow is [result]. - This measurement is taken with the arm bent at the elbow, forming a right angle, and the forearm pointing upwards.

Muscle Contraction and Changes in Measurement

During muscle contraction, the following changes in the arm circumference can be observed:

- Muscle Contraction Effect: When the muscles contract, the arm circumference may decrease due to the muscles becoming more compact and taking up less space. - Source: This source discusses the impact of muscle contraction on arm circumference.

- Physiological Response: The physiological response to muscle contraction involves the tightening and shortening of the muscle fibers, leading to a reduction in the overall circumference of the arm. - Source: This source provides insights into the physiological changes during muscle contraction.

- Measurement Variations: The arm circumference measurement may vary between the relaxed and contracted states, reflecting the impact of muscle contraction on the physical dimensions of the arm. - Source: This source explains the variations in arm circumference measurement due to muscle contraction.

Conclusion

In conclusion, the practical work involving the measurement of arm circumference in different positions provides valuable insights into the impact of muscle contraction on the physical dimensions of the arm. The measurements taken in relaxed and contracted states offer a practical understanding of the changes in arm circumference associated with muscle activity.

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