Circulatory, Respiratory, and Digestive Systems

Which organ is responsible for the absorption of nutrients in the digestive system?

• Stomach

• Small intestine

• Large intestine

• Esophagus

What is the primary function of the respiratory system?

• To digest food

• To circulate blood

• To exchange gases-oxygen and carbon dioxide

• To filter waste from the blood

Which component of the circulatory system is responsible for carrying oxygen-rich blood away from the heart?

• Veins

• Arteries

• Capillaries

• Venules

What is the process called where oxygen and glucose are converted into ATP in the body cells?

• Digestion

• Circulation

• Cellular Respiration

• Photosynthesis

Which organ is the site of gas exchange in the lungs?

• Trachea

• Bronchi

• Alveoli

• Larynx

The heart is part of which body system?

• Digestive system

• Respiratory system

• Circulatory system

• Nervous system

Which of the following is NOT a function of the circulatory system?

• Transporting nutrients to cells

• Removing waste products from the body

• Breaking down food into nutrients

• Delivering oxygen to body tissues

During inhalation, air goes through the trachea and then enters which part of the respiratory system?

• Esophagus

• Bronchi

• Lungs

• Pharynx

What is the sequence of blood flow in the circulatory system starting from the heart?

• Heart -> Arteries -> Capillaries -> Veins -> Heart

• Heart -> Veins -> Capillaries -> Arteries -> Heart

• Heart -> Capillaries -> Arteries -> Veins -> Heart

• Heart -> Arteries -> Veins -> Capillaries -> Heart

What is the main purpose of the red blood cells in the circulatory system?

• To fight infections

• To clot blood

• To carry oxygen

• To digest food