5 L 31

What is the main function of the skeletal system?

• clean the body
• support the body
• deliver nutrients to the body

Which body system includes the lungs?

• respiratory system
• digestive system
• skeletal system

Which body system carries signals to and from the brain?

• respiratory
• circulatory
• nervous
• skeletal

Which body system is shown in the diagram?

• digestive
• nervous
• circulatory
• respiratory

Which best describes a function of the circulatory system?

• transport blood
• provide oxygen
• help the body move

Which best describes the purpose of the cardiovascular system?

• It delivers blood to the body's tissues
• It supplies stability to the skeleton
• It delivers food to power the body
• It supplies oxygen to the body

Melissa accidentally touches a hot surface and then quickly pulls her hand away,  Which two systems in the human body were involved in her action and reaction?

• nervous and muscular
• skeletal and circulatory
• nervous and respiratory
• muscular and respiratory

How does the circulatory system work with the digestive system?

• Blood is used to build muscle strength.
• Food is broken down in the bloodstream.
• Blood carries nutrients throughout the body.
• Food waste is filtered by the heart and blood vessels. 

Why is the respiratory system so important?

• It controls breathing and gas exchange in the body.
• It controls digestion and absorption of nutrients in the body.
• It controls heartbeat and blood circulation throughout the body.
• It controls internal body temperature and cools the body through sweat. 

Which best describes the relationship between the skeletal system and the circulatory system?

• The skeletal system transports red blood cells after the circulatory system produces them
• The skeletal system protects red blood cells and the circulatory system pumps those cells through veins and arteries. 
• The skeletal system produces red blood cells and the circulatory system transports those cells where they need to go.
• The skeletal system helps put oxygen in red blood cells and the circulatory system helps those cells rid the body of carbon dioxide.