Algonquin College Health Program Assessment (AC-HPAT) Practice Exam

What is the primary function of the circulatory system?

1. To absorb nutrients

2. To provide oxygen

3. To distribute blood and associated chemicals through the body

4. To eliminate waste products

The correct answer is: To distribute blood and associated chemicals through the body

The primary function of the circulatory system is to distribute blood and associated chemicals through the body. This system is responsible for transporting essential substances such as oxygen, nutrients, hormones, and waste products between various tissues and organs. Blood, as the primary vehicle of transportation, enables the delivery of these substances to cells where they are utilized for metabolic processes, energy production, and nourishment. In this context, while the roles of absorbing nutrients, providing oxygen, and eliminating waste products are important functions of the body, they are all part of the broader function of the circulatory system. For instance, oxygen is carried by the blood from the lungs to the body cells, and waste products are transported from the tissues to the excretory organs for removal. Hence, the circulatory system's overarching role is to facilitate this extensive distribution network, ensuring that all body parts receive what they need to function optimally and maintain homeostasis.