What are the themes in biology that come up again & again cellular basis of life; info & heredity; matter & energy; growth, development, & reproduction; homeostasis; evolution; structure & function; unity & diversity of life; interdependence in nature; science as a way of knowing
Answer:
At the time of inspiration, contraction of diaphragm takes place that enhances the chest cavity.
Explanation:
One of the prime muscle that takes part in the process of respiration is the diaphragm, which is situated below the lungs. It is a dome-shaped and large muscle, which spontaneously goes through a contraction, and largely the process takes place involuntarily.
The contraction of diaphragm takes place at the time of inhalation, which flattens and increases the chest cavity. Due to the contraction, a vacuum is generated that makes the air to get in within the lungs. In contrast, the diaphragm relaxes at the time of exhalation and moves back to its original shape, thus, making the air move out of the lungs.
The answer to this question is option B for sure.
Carbon dioxide and water vapour
