"What happens when you exercise (2)" Our Body PPT Courseware 3

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"What happens when you exercise (2)" Our Body PPT Courseware 3

1. Understanding people with heart

1. Heart position:

Located in the middle left lower part of the chest.

2. Form size:

Shaped like a peach and as big as a human fist.

3. What is the heart doing when it keeps beating?

The oxygen needed by the human body is inhaled by the lungs and enters the blood, and then transported by the heart to various parts of the body through blood vessels. At the same time, waste products such as carbon dioxide are collected and excreted from the body.

4. A normal person's heartbeat should be between 60 and 100 beats per minute. Anything above or below is considered abnormal. But the number of heartbeats varies at different ages. The heartbeat of people over 60 years old can slow down, but the slowest cannot be less than 50 beats per minute. For athletes or strong physical workers, because the cardiac output is significantly larger than that of normal people, the heartbeat rate can be around 45 beats.

1. Approximately how many times does our heart beat in a day?

60 times × 60 minutes × 24 hours 86,400 times

90 times × 60 minutes × 24 hours 129,600 times

2. The heart has a short rest between two beats.

If the interval between two heartbeats is one second, that is one beat per minute. Then, the heart actually completes beating in 0.2 seconds, and the remaining 0.8 seconds is resting.

3. Since the heart will take a short rest, does it need more rest? How to give your heart more rest?

Get reasonable rest and good sleep

Exercise regularly to enhance cardiopulmonary function

1. Fill in the blanks:

1. People often say "life lies in ( )".

2. The heartbeat is the ( ) contraction and relaxation of the heart. Every time the heart contracts and relaxes, we will feel it ( ).

3. ( ) and ( ) are the blood circulation organs of the human body.

2. Multiple choice questions:

1. Which of the following is not a blood circulation organ of the human body ( ).

A. Heart B. Blood vessels C. Large intestine

2. Blood transports ( ) throughout the body.

A. Oxygen B. Carbon dioxide C. Waste

3. The heartbeat test cannot be performed ( ).

A. Relax B. Calm C. Do strenuous exercise

3. What are the changes in heartbeat and breathing before and after exercise? Why?

Answer: Before exercise, the heartbeat and breathing are relatively gentle; after exercise, the heartbeat and breathing will speed up because the contraction and relaxation of the heart are accelerated after exercise.

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"What happens when you exercise (2)" Our Body PPT Download:

"What happens when you exercise (2)" The first part of our body PPT download content: Introducing a new lesson to explore why the heartbeat speeds up. Today we are going to do an experiment. We are not only competing to see who can play better, but also who can play better. You gain a lot of knowledge while playing...

"What happens when you exercise (2)" Our Body PPT:

"What Happens When You Exercise (2)" Our Body PPT Part One: Why does the heartbeat speed up? The human heart is located at the lower left side of the middle of the chest. It is shaped like a peach and is about the size of a fist..

"What happens when you exercise (1)" Our Body PPT Download:

"What Happens When You Exercise (1)" Our Body PPT Download Part One Content: Introducing the new lesson of measuring heartbeat and breathing Today we are going to do an experiment. We are not only going to compare who can play well, but also who can play well. You gain a lot of knowledge while playing. skeleton..

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Update Time: 2024-11-22

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