The heart is made of involuntary cardiac muscle. to help you remember, cardiac is defined as “relating to heart” so if you’re ever stuck in this question again, look for the word “cardiac” and “heart”
Answer:
CO2 is a nonpolar molecule that can diffuse through the plasma membrane. As long as it diffuses away so that the concentration remains low outside the cell, it will continue to exit the cell in this way.
Explanation:
