The Human Body Systems Quiz

What is the primary function of the respiratory system?

• To pump blood throughout the body

• To digest food

• To exchange gases (oxygen and carbon dioxide) with the environment

• To send signals between different parts of the body

Which organ is responsible for pumping blood throughout the body in the circulatory system?

• Lungs

• Heart

• Stomach

• Brain

What is the main function of the digestive system?

• To circulate blood

• To control body movements

• To break down food into nutrients the body can use

• To exchange gases with the environment

Which part of the nervous system is responsible for processing information received from the senses?

• Spinal cord

• Nerves

• Brain

• Muscles

How many bones are in the adult human body?

• 106

• 206

• 306

• 406

What is the main function of the muscular system?

• To break down food

• To pump blood

• To move the body

• To protect internal organs

Which type of blood vessels carry blood away from the heart?

• Veins

• Capillaries

• Arteries

• Ventricles

What is the role of the alveoli in the respiratory system?

• To pump air in and out of the lungs

• To transport oxygen to the brain

• To facilitate the exchange of oxygen and carbon dioxide

• To filter out impurities from the air

Which part of the digestive system absorbs nutrients from digested food?

• Stomach

• Small intestine

• Large intestine

• Esophagus

What is the basic unit of the nervous system?

• The brain cell

• The nerve

• The neuron

• The synapse