The human body system responsible for transporting nutrients and waste is:

The human body system responsible for transporting nutrients and waste is:

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

Answer: (D)

The circulatory system is the network that transports essential nutrients to every cell and carries waste products away for elimination. After nutrients are absorbed from the digestive tract, they enter the bloodstream and are carried throughout the body to nourish tissues. Metabolic wastes, such as carbon dioxide and urea, are picked up by the blood and delivered to organs like the lungs and kidneys for removal. The heart pumps blood through a closed system of vessels, making this transport possible. The other systems have different primary roles: the digestive system breaks down food and absorbs nutrients; the nervous system sends signals to control body's actions; the respiratory system exchanges gases (oxygen in and carbon dioxide out). While these systems interact with circulation, the primary job of transporting nutrients and wastes across the body is done by the circulatory system.

The circulatory system is the network that transports essential nutrients to every cell and carries waste products away for elimination. After nutrients are absorbed from the digestive tract, they enter the bloodstream and are carried throughout the body to nourish tissues. Metabolic wastes, such as carbon dioxide and urea, are picked up by the blood and delivered to organs like the lungs and kidneys for removal. The heart pumps blood through a closed system of vessels, making this transport possible.

The other systems have different primary roles: the digestive system breaks down food and absorbs nutrients; the nervous system sends signals to control body's actions; the respiratory system exchanges gases (oxygen in and carbon dioxide out). While these systems interact with circulation, the primary job of transporting nutrients and wastes across the body is done by the circulatory system.