Explore the Body Systems

What is the main function of the digestive system?

• To regulate body temperature.

• To store energy for the body.

• To filter toxins from the blood.

• To break down food and absorb nutrients.

Name the organ where digestion begins.

• Small intestine

• Stomach

• Mouth

• Esophagus

What is the role of the heart in the circulatory system?

• The heart produces hormones for digestion.

• The heart filters toxins from the blood.

• The heart's role is to pump blood, facilitating circulation of oxygen and nutrients.

• The heart stores excess nutrients for later use.

Which blood vessels carry blood away from the heart?

• Arteries

• Capillaries

• Veins

• Venules

What is the primary function of the lungs?

• The primary function of the lungs is gas exchange.

• Regulating body temperature

• Filtering dust from the air

• Breathing in oxygen only

How do we breathe in air?

• We breathe in air by inflating our cheeks and holding our breath.

• We breathe in air by contracting the diaphragm and expanding the chest cavity, which creates a vacuum that pulls air into the lungs.

• Air enters the lungs through the skin when we are outside.

• We breathe in air by swallowing it directly into the stomach.

What part of the nervous system controls voluntary actions?

• Autonomic nervous system

• Central nervous system

• Peripheral nervous system

• Somatic nervous system

What is the basic unit of the nervous system?

• Neuron

• Axon

• Dendrite

• Synapse

Which system is responsible for movement in the body?

• Skeletal system

• Digestive system

• Nervous system

• Muscular system

What are muscles made of?

• Muscles are made of fat cells and carbohydrates.

• Muscles consist of only water and minerals.

• Muscles are made of muscle fibers, proteins (actin and myosin), connective tissue, blood vessels, and nerves.

• Muscles are composed of skin and hair.