How the transport of O2 and CO2 by blood happens?
Correct answer: C. With the help of RBCs and blood plasma
- A. With the help of WBCs and blood serum
- B. With the help of platelets and corpuscles
- C. With the help of RBCs and blood plasma
- D. With the help of RBCs and WBCs
Explanation
All options are explained below: a)With the help of WBCs and blood serum: White blood cells (WBCs) primarily play a role in the immune system, and blood serum is the liquid part of the blood without clotting factors. They are not directly involved in the transport of oxygen (O2) and carbon dioxide (CO2). B. With the help of platelets and corpuscles:Platelets are involved in blood clotting, and the term "corpuscles" is a general term for blood cells. Platelets do not directly participate in the transport of O2 and CO2. C. With the help of RBCs and blood plasma:This statement is accurate. The primary responsibility for the transport of oxygen and carbon dioxide lies with red blood cells (RBCs) and the blood plasma. RBCs contain hemoglobin, a molecule that binds to oxygen in the lungs and releases it in tissues, and also carries carbon dioxide back to the lungs.97% of O2 is transported by RBC and 3% by plasma. 70% of CO2 is transpored via reaction with water to form carbonic acid,23% by binding with RBC and 7% through plasma. D. With the help of RBCs and WBCs: White blood cells (WBCs) are primarily involved in immune responses and defense against infections. While both RBCs and WBCs are types of blood cells, WBCs are not directly responsible for the transport of O2 and CO2. Correct Option: C. With the help of RBCs and blood plasma Summary: The correct option is C. The transport of oxygen (O2) and carbon dioxide (CO2) by blood primarily occurs with the assistance of red blood cells (RBCs) and the blood plasma. RBCs contain hemoglobin, which binds and carries O2 and CO2. While other blood components like white blood cells (WBCs) and platelets have essential functions, they are not the main carriers for O2 and CO2. Options A, B, and D do not accurately represent the primary mechanisms for gas transport in the blood.
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About Respiration
The human respiratory system includes the air passages, lungs, alveoli and breathing muscles, while gaseous exchange explains how oxygen enters blood and carbon dioxide leaves it by diffusion. The effects of smoking include damage to cilia and alveoli, reduced gas exchange, chronic bronchitis, emphysema and increased risk of lung cancer.
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