23. Human cells need oxygen for respiration. What system of the body is responsible for transporting an oxygen molecule to different locations throughout the body?
Answer: C
The circulatory system is responsible for transporting oxygen molecules throughout the body.
The circulatory system plays a crucial role in delivering oxygen to various parts of the body, ensuring that cells receive the oxygen necessary for respiration.
A) Skeletal
The skeletal system primarily provides structural support and protection for the body's organs. It does not play a role in the transportation of oxygen or any other substances throughout the body.
B) Lymphatic
The lymphatic system is responsible for the transportation of lymph, a fluid that contains immune cells, and it helps in the removal of toxins and waste. However, it does not transport oxygen; its primary function is related to the immune system and fluid balance.
C) Circulatory
The circulatory system, consisting of the heart, blood vessels, and blood, is essential for transporting oxygen from the lungs to the rest of the body. Hemoglobin in red blood cells binds to oxygen, allowing for efficient distribution to tissues where it is needed for cellular respiration.
D) Respiratory
The respiratory system is responsible for the intake of oxygen and the expulsion of carbon dioxide through the lungs. While it facilitates the exchange of gases, it does not transport oxygen throughout the body; that function is carried out by the circulatory system.
Conclusion
The circulatory system is definitively the correct answer as it is the primary system responsible for oxygen transport throughout the body. The other systems listed, while important in their own rights, do not fulfill this specific role, thereby underscoring the unique function of the circulatory system in maintaining cellular respiration.