Respiratory and Circulatory System

When Lily goes running, it causes the cells in her muscular system to use oxygen at a faster rate. Which system responds by delivering more oxygen to these cells?

• digestive
• circulatory
• nervous
• endocrind

Your nose moistens and filters air. Your diaphragn is a muscle that controls air intake and your lungs perform gas exchange. 
Which system performs all these functions?

• digestive
• circulatory
• respiratory
• skeletal

Carbon dioxide is the gas transported by the circulatory system and is used by cells during respiration to release energy stored in foods.

• True
• False

Another name for the wind pipe is trachea

• True
• False

The main organs of the respiratory system is 

• diaphragm
• arteries
• lungs
• oxygen

The large muscle below the lungs that contracts and relaxes during breathing is

• lungs
• larynx
• diaphragm

A gas needed for cellular respiration

• oxygen
• carbon dioxide
• nitrogen
• carbon

The circulatory system transports material from one part of the body to another.

• True
• False

Large blood vessels that take blood Away from the heart are

• capillaries
• ventricles 
• arteries
• veins

Breathing takes in carbon dioxide and eliminates oxygen.

• True
• False