Question

Which of the following organ system takes in food, breaks it down into smaller chemical units, and absorbs the nutrient molecules?

• A. Digestive system
• B. Respiratory system
• C. Circulatory system
• D. Endocrine system
• E. Nervous system

Answer 1

The correct option is A Digestive system

• The digestive system includes the alimentary canal and associated glands to carry out the digestion of food and release the energy stored in these food substances.
• The nutrients from digested food are then absorbed in the small intestine of the alimentary canal and carried to different organs via the circulatory system.
• The primary function of the respiratory system is to allow atmospheric oxygen from the air to enter the blood and carbon dioxide from the blood to exit into the air.
• The endocrine system includes endocrine glands and maintains the homeostasis of the body through hormonal actions.
• The nervous system serves in the reception of sensory input followed by their integration in the brain and spinal cord and generation of motor output to produce the response.

Thus, the correct answer is A.