Oxygen transport Drag each label to the appropriate location on the flowchart. Reset Help is c Oxygen binds to a molecule of from the blood to the body’s tissues the alveoli i surrounding red blood cell. vessels to a Submit Next SRO ystems XA Ucers DB
The Correct Answer and Explanation is :
Oxygen transport in the human body involves a series of steps that ensure oxygen is efficiently delivered from the lungs to the body’s tissues. Here’s an overview of the process:
- Inhalation: Air containing oxygen enters the lungs through the respiratory tract.
- Gas Exchange in the Alveoli: Within the alveoli (tiny air sacs in the lungs), oxygen diffuses across the alveolar walls into the bloodstream, while carbon dioxide diffuses from the blood into the alveoli to be exhaled.
- Binding to Hemoglobin: In the pulmonary capillaries, oxygen binds reversibly to hemoglobin molecules in red blood cells, forming oxyhemoglobin. Each hemoglobin molecule can bind up to four oxygen molecules.
- Transport via the Circulatory System: The oxygen-rich blood is then transported through the arterial system to various tissues and organs throughout the body.
- Oxygen Release in Tissues: At the tissue level, oxygen dissociates from hemoglobin and diffuses into cells, where it is utilized for cellular respiration.
- Return of Deoxygenated Blood: After oxygen is released, the now deoxygenated blood returns to the heart through the venous system, completing the cycle.
This process is crucial for maintaining cellular metabolism and overall body function.