The respiratory and cardiovascular systems of vertebrate animals work in tandem to transport oxygen to metabolizing tissues and to eliminate carbon dioxide as a waste gas. Which of the following statements accurately describes how these systems interact for gas exchange?
a) The premise of the question is incorrect. The cardiovascular and respiratory systems are completely independently regulated by the body, so that one does not affect the other
b) The rate of oxygen transport by diffusion across the lungs must generally match the rate of transport by the circulatory system.
c) Bulk flow of gases and solutes works well over very short distances, whereas diffusion is effective only over long distances.
d) The rate of gas exchange by diffusion need not match rates of ventilation or circulatory transport.

b) The rate of oxygen transport by diffusion across the lungs must generally match the rate of transport by the circulatory system.

Explanation:

The respiratory and cardiovascular system works sin synchronization with each other to transport oxygen to tissue and eliminate carbondioxide.

example: Exercising skeletal muscles has increased metabolic rate which in turn cause increase requirement of oxygen and as a result increased carbondioxide will be produced.The body will function by releasing local metabolites which in turn effects on heart simultaneously blood vessels will dialates. The heart will pump more blood to deliver the oxygen and nutrient to match the metabolic requirement and will washout carbon dioxide.

dna damages cause changes in the structure of the genetic material and prevents the replication mechanism from functioning and performing properly. dna damage and mutation have different biological consequences. while most dna damages can undergo dna repair, such repair is not 100% efficient.

they are known to reach a speed of 21 miles per hour