How do your body systems work together? | Grade 6 | Unit 1 - Concept 2 - Lesson 1 | Science

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In This Lesson:
▌When you feel nervous, your heartbeats increase, your body starts to sweat and you may feel pain in your stomach.
So, where all systems interact and work together in an integrated way.
Examples:
The interaction between the nervous system and the circulatory system, where when you feel nervous, your heartbeats increase.
Danger Response
How do your body systems work together in dangerous situations?
▌The opposite picture shows a cyclist in a dangerous situation.
When the eyes of the cyclist see a dangerous situation, the brain receives the information from the eyes.
Then, the brain sends a signal to the muscles that contract and allow his body to face the danger.
So, the interactions between body systems (circulatory system and muscular system) are important in dangerous situations.
 Let's study the following example that shows how do the nervous system, circulatory system and digestive system depend on each other to do their functions.
Example:
1. The nerve cells in the nervous system need nutrients to perform their functions, these nutrients reach the body as food.
2. After the digestive system digests this food, nutrients are transmitted to the nerve cells through the blood in the circulatory system.
(This means that the nervous system depends on the digestive system and circulatory system to do its function).
3. Also, the nervous system controls the muscles of stomach in the digestive
system and the muscles of heart in the circulatory system.
(This means that the digestive system and circulatory system depend on the nervous system to do their functions).
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