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Multiple Choice
What is the primary function of blood in the human body?
A
To transport oxygen and nutrients to cells
B
To produce hormones for metabolic regulation
C
To provide structural support to organs
D
To store energy in the form of glycogen
Verified step by step guidance
1
Identify the main components of blood: red blood cells, white blood cells, platelets, and plasma.
Understand the role of red blood cells, which contain hemoglobin, a protein that binds to oxygen and facilitates its transport from the lungs to the rest of the body.
Recognize that blood also carries nutrients absorbed from the digestive tract to cells throughout the body, providing the necessary components for cellular function and energy production.
Consider the role of blood in removing waste products, such as carbon dioxide, from cells and transporting them to excretory organs like the lungs and kidneys for elimination.
Conclude that the primary function of blood is to transport oxygen and nutrients to cells, supporting cellular metabolism and overall homeostasis in the body.