Explore Body Systems

Naira is learning about the human body in her biology class. Her teacher asks the class, "What is the main function of the heart?"

• To filter waste from the blood.

• To produce hormones for growth and development.

• To digest food and absorb nutrients.

• To pump blood throughout the body.

Name the largest organ in the digestive system.

• Liver

• Stomach

• Pancreas

• Small intestine

What part of the nervous system controls involuntary actions?

• Somatic nervous system

• Peripheral nervous system

• Autonomic nervous system

• Central nervous system

Which blood vessels carry blood away from the heart?

• Arteries

• Veins

• Venules

• Capillaries

What is the role of the stomach in digestion?

• The stomach is primarily responsible for producing bile.

• The stomach mechanically and chemically digests food, turning it into chyme.

• The stomach absorbs nutrients directly into the bloodstream.

• The stomach stores food without any digestion occurring.

How do neurons communicate with each other?

• Neurons communicate through electrical impulses only.

• Neurons communicate by direct contact without any chemical signals.

• Neurons use hormones to transmit signals between each other.

• Neurons communicate via synaptic transmission using neurotransmitters.

What is the function of red blood cells?

• To store nutrients and vitamins.

• To produce insulin for the body.

• To fight off infections and diseases.

• To transport oxygen and carbon dioxide in the body.

Which system is responsible for transporting nutrients and oxygen?

• Circulatory system

• Nervous system

• Respiratory system

• Digestive system