Which system is primarily responsible for the removal of bi-products of metabolism?

Camts _______________________

Fill in the blank(s) with correct word

Which of the following statements indicates that the speaker has an accurate understanding of breathing?

a. "When a person inhales, carbon dioxide is drawn into the lungs, and when he exhales, oxygen leaves the body." b. "Respiration is best described as the process of moving air into and out of the body." c. "Inhalation is an active process, whereas for most patients exhalation is a passive process." d. "In between breaths, the epiglottis closes over and protects the trachea."