Unit test

The _____ is the organ that pumps blood throughout the body

Blood vessels that carry blood away from the heart are called ________.

The main function of the _____ is to exchange gases between the blood and the air

___ blood cells are responsible for carrying oxygen

___________ is the process by which oxygen is used to produce energy in cells

What is the primary function of the cardio respiratory system

• to digest food

• to store energy

• to deliver oxygen and nutrients to the body

• to control body temperature

Which of the following structures are part of the cardiorespiratory system ?

• stomach and intestines

• heart and lungs

• kidneys and bladder

• brain and spinal cord

What type of blood vessel carries oxygen rich blood away from the heart ?

• veins

• arteries

• capillaries

• lymph vessels

Which blood component is responsible for transporting oxygen?

• platelets

• plasma

• red blood cells

• white blood cells

What gas is exchanged for oxygen in the lungs?

• helium

• nitrogen

• hydrogen

• carbon dioxide