[2015] Harley Smith (4th grade 2015, 4th Grade Science): Circulatory and Respiratory System

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by MKHobbs
Last updated 4 years ago

Discipline:
Science
Subject:
Human Anatomy

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[2015] Harley Smith (4th grade 2015, 4th Grade Science): Circulatory and Respiratory System

The Circulatory System

The main job of the Circulatory System is to bring food and oxygen to the body.There are two halves in our heart each of the halves has a chamber.Your blood sends oxygen and collects waste well running through your body.

Did you know? There are 62,000 miles of blood cells in your body that's like traveling twice around the world

The Respiratory System

The heart pumps blood all around your body in thirty seconds

The main job is this system enables you to breathe.Your bronchi sends the air the each lung.Then the oxygen is picked up by red blood cells the cells carry it to the body.When you breathe out your diaphragm relaxes and forces air out of the lungs.Your cells use oxygen to break down your food to make energy.

Did you know? Your lungs have 300,000,000 air sacs

The Nervous System

The main job is to control body movement and five senses. The nerves sends messages to the brain. The brain decides how we should respond to those messages. Your spinal cord runs from your brain into your backbone.Your brain controls your movement, speech and the five senses

The nervous system sends messages 185 miles per hour


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