Human organ system
Definition:
A human organ system is a group of organs that work together to perform a particular job and keep the body alive.
Interesting points:
The heart beats about 100,000 times every day.
The brain sends messages faster than a blink of an eye.
The lungs have millions of tiny air sacs called alveoli.
The stomach makes strong acid to digest food.
The liver can grow back if part of it is damaged.
Bones protect important organs like the brain and heart.
Muscles help us run, jump, and play.
Kidneys remove waste from our body.
All organ systems work together like a team every second.
The pharynx is a passage that helps both air and food move to the right place in the body.
Main points:
The human body has many organ systems.
An organ system is a group of organs working together.
Each organ system has a special function.
The digestive system digests food and gives energy.
The respiratory system helps us breathe.
The circulatory system carries blood and oxygen.
The nervous system controls thinking and body actions.
The skeletal system gives shape and support.
The muscular system helps in movement.
The excretory system removes waste from the body.
Fun Fact:
Your lungs help you breathe about 20,000 times every day!