When a person starts exercising (running) the increase in energy expenditure causes an elevation of oxygen consumption and carbon dioxide production. To compensate for this the respiratory control center senses the LOW oxygen level in blood and the HIGH carbon dioxide level and signals the diaphragm to contract and relax more often (INCREASE THE RATE).
The answer is B
Cells are limited in size because the outside also known as the plasma membrane must transport food and oxygen to the inside of the cell. This can be represented by what is known as the surface to volume ratio.
when an animal eats plants they could be eating the carbon.
Answer:
T tubules
Explanation:
Transverse tubules (T tubules) are extensions of the sarcolemma that penetrate into the interior of the muscle transmitting electrical signals to the sarcoplasmic reticulum.
