Body Systems

he body's?circulatory?system includes the heart and blood?vessels.人體的循環系統包括心臟和血管。

The heartpumpsblood to allpartsof thebodythrough a?network?of?arteries?and?veins.心臟通過動脈和靜脈網絡將血液輸送到身體的各個部位。

The digestive system breaks down and absorbs food into the body.消化系統分解，把食物吸收到體內。

It's supplies the energy that the body needs for growth and repair.它提供身體生長和修復所需的能量。

After digestion,?excess?food isturnedintowasteand eliminated from the body.消化后，多余的食物就會變成廢物，從體內排出。

The?nervous?system includes the brain,?spinal cord?and nerves.神經系統包括大腦、脊髓和神經

This is your body's control system.這是你身體的控制系統。

It controls your?muscles and organs, including your circulatory and digestive systems.它控制你的肌肉和器官，包括你的循環和消化系統。

The?respiratory?system includes the nose and lungs.呼吸系統包括鼻子和肺。

It brings air and oxygen into the body and removes carbon dioxide.它將空氣和氧氣帶入人體，并清除二氧化碳。

The lungs arewhereoxygenentersthe bloodstream, and carbon dioxide isremoved.肺是氧氣進入血液，二氧化碳被排出的地方

The?immune?system protects the body against infections and diseases.免疫系統保護身體免受感染和疾病。

Sneezing and fever are examples of how the immune system works.打噴嚏和發燒是免疫系統如何工作的例子。

If an infection invades the body, the immune system attacks it.如果感染侵入人體，免疫系統就會攻擊它。

The blood vessels that carry oxygen-rich blood?from?the heart are called arteries.從心臟輸送富氧血液的血管叫做動脈。

The digestive system is where food is broken down and absorbed into the body.消化系統是食物被分解和吸收到身體的地方。

The nervous system regulates your heartbeat and digestion.神經系統調節你的心跳和消化。