Circulatory System

What does our circulatory system do to our body?

• To transport food and oxygen needed by the different parts of our body.

• To allow the exchange of gases between our body and surrounding.

• To broken down our food we eat into simple subtances.

What are the main parts of the human circulatory system?

• nose, windpipe, air tubes, lungs, air sacs

• heart, blood vessel, blood

• cardiac muscles, skeletal muscles, smooth muscles

Which of the following is not the function of blood?

• To carry oxygen, water, and digested food.

• To carry carbon dioxide and other waste materials.

• To pump blood to all parts of our body.

The function of the organ is ____.

• To pump blood to all body parts.

• To do exchange between oxygen and carbon dioxide.

• To carry blood away from the heart.

How the blood flow in our body?

• All body parts (CO2) - heart - lungs - heart - all body parts (O2)

• All body parts (O2) - heart - lungs - heart - all body parts (CO2)

• All body parts (CO2) - heart - lungs - all body parts (O2)

The place where oxygen and carbon dioxide exchange is _____.

• lungs

• heart

• brain

The blood that pump from heart to all body parts rich in _____.

• carbon dioxide

• oxygen

• waste material

Where does gas exchange for amphibians?

• lungs only

• skin only

• lungs when on land and skin when underwater

The diagram show the circulatory system of ____.

• fish

• amphibians

• mammals and birds

The throbbing of the blood vessel because the contraction of the heart muscles is called ____

• heart rate

• heart beat

• pulse