What is the main function of the circulatory system?

• To transport blood and essential substances throughout the body.

• To digest food and absorb nutrients.

• To provide structural support to the body.

• To facilitate the exchange of gases in the lungs.

Which organ is responsible for pumping blood?

• Kidneys

• Heart

• Lungs

• Liver

What system is responsible for breaking down food?

• Digestive system

• Nervous system

• Circulatory system

• Respiratory system

What is the largest organ in the human body?

• Liver

• Skin

• Lungs

• Heart

Which system helps protect the body from disease?

• Circulatory system

• Digestive system

• Immune system

• Nervous system

What part of the brain controls balance and coordination?

• Cerebellum

• Thalamus

• Cerebrum

• Brainstem

What is the primary function of the respiratory system?

• To facilitate gas exchange (oxygen and carbon dioxide) between the body and the environment.

• To digest food and absorb nutrients

• To produce hormones for growth

• To regulate body temperature

Which type of blood cell helps fight infections?

• Red blood cells

• Plasma cells

• Platelets

• White blood cells

What is the role of the skeletal system?

• The skeletal system produces hormones.

• The skeletal system is responsible for digestion.

• The skeletal system regulates body temperature.

• The skeletal system supports the body, protects organs, enables movement, stores minerals, and produces blood cells.

How many chambers does the human heart have?

• 2

• 3

• 4

• 5