circulatory & digestive systems quiz

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

The job of the heart is to . . .

• pump blood around the body.

• send food to the small intestines.

• break down food.

• give energy to the body.

Which is responsible for providing oxygen to cells?

• respiratory system
• circulatory system
• muscular system
• nervous system

About how big is the human heart?

• the size of your nose

• the size of your foot

• the size of your fist

• the size of your ear

Which of the following is not part of the circulatory system?

• veins

• heart

• stomach

• arteries

As the blood reaches the lungs, what is removed from the blood?

• oxygen

• carbon dioxide

• red blood cells

• white blood cells

The main function of the circulatory system is 

• To give the body structure and support
• Excrete waste
• transport blood, nutrients, and gases throughout the body
• to transport messages from the body to the brain

This is a example of ........

• cell
• tissue
• organ 
• organ system

This is a example of ........

• organ
• organ system
• tissue
• cell

What is the most complex level of organization? 

• tissue
• organism 
• organ system 
• cell