TESTING, TESTING, 1, 2, 3: PLEASE CHOOSE ANSWER "A"!

• A: HERE!

• B: NO!

• C: I SAID "A"!

• D: OH COME ON!

Which system is responsible for the exchange of oxygen and carbon dioxide in the body?

• Circulatory system

• Nervous system

• Respiratory system

• Digestive system

Answer explanation

The respiratory system is responsible for the exchange of oxygen and carbon dioxide in the body.

What system is composed of the heart, blood vessels, and blood?

• Respiratory system

• Digestive system

• Nervous system

• Ciculartory system

Answer explanation

The circulatory system is composed of the heart, blood vessels, and blood. It is responsible for transporting oxygen, nutrients, and waste products throughout the body.

Which system is responsible for breaking down food and absorbing nutrients?

• Respiratory system

• Circulatory system

• Nervous system

• Digestive system

Answer explanation

The digestive system is responsible for breaking down food and absorbing nutrients.

What system controls and coordinates the body's activities and responses to stimuli?

• nervous system

• respiratory system

• digestive system

• endocrine system

Answer explanation

The nervous system controls and coordinates the body's activities and responses to stimuli.

Which system allows movement and helps maintain posture and body position?

• Respiratory system

• Nervous system

• Digestive system

• Skeletal system

Answer explanation

The skeletal system allows movement and helps maintain posture and body position.

What organ is part of the respiratory system?

• lungs

• heart

• stomach

• liver

Answer explanation

The lungs are part of the respiratory system. They are responsible for the exchange of oxygen and carbon dioxide in the body.

What organ is part of the circulatory system?

• heart

• liver

• kidney

• stomach

Answer explanation

The heart is part of the circulatory system. It pumps blood throughout the body, delivering oxygen and nutrients to the cells.

What organ is part of the digestive system?

• Stomach

• Heart

• Brain

• Lungs

Answer explanation

The stomach is part of the digestive system. It helps break down food and absorb nutrients. The heart, brain, and lungs are not directly involved in digestion.

What organ is part of the nervous system?

• liver

• kidney

• heart

• brain

Answer explanation

The brain is part of the nervous system. It is responsible for controlling and coordinating the body's functions, including thoughts, movements, and sensations.