Explore the Human Body

What is the total number of bones in an adult human skeleton?

• 201

• 206

• 215

• 198

What is the largest organ in the human body?

• liver

• heart

• lungs

• skin

What is the primary function of the heart?

• To circulate oxygen in the lungs.

• To filter waste from the blood.

• To digest food in the stomach.

• To pump blood throughout the body.

Which organ is responsible for producing insulin?

• Liver

• Kidneys

• Pancreas

• Spleen

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

• Arteries

• Capillaries

• Veins

• Venules

What is the main function of the lungs?

• Filtering blood

• Producing hormones

• The main function of the lungs is gas exchange.

• Breathing in oxygen only

What is the process called when food is broken down in the stomach?

• Absorption

• Metabolism

• Fermentation

• Digestion

Which part of the brain controls balance and coordination?

• Cerebrum

• Brainstem

• Thalamus

• Cerebellum

What are the three types of muscles in the human body?

• Skeletal, smooth, and cardiac muscles

• Cardiac, striated, and voluntary muscles

• Skeletal, cardiac, and connective tissues

• Skeletal, elastic, and smooth muscles

What is the role of red blood cells?

• To store nutrients and vitamins.

• The role of red blood cells is to transport oxygen and carbon dioxide in the body.

• To produce insulin for the body.

• To fight off infections and diseases.