Role of Hemoglobin in Oxygen Transport

The human circulatory system plays a vital role in transporting blood throughout the body. Blood is pumped from the heart through arteries to various tissues and organs, delivering oxygen and nutrients. Afterward, deoxygenated blood returns to the heart through veins. One important component of blood is red blood cells, which contain hemoglobin.

Hemoglobin is a protein that binds oxygen and is crucial for ensuring that tissues receive the necessary oxygen for cellular respiration. In cases of low oxygen levels in the blood, the body can trigger mechanisms to enhance oxygen delivery to the tissues.