Enhancement and improvement costs. 1  Pouring the foundation is a good time to add radiant flooring 2. 2  This is also a good time to install a foundation drain 3, which tends to add an additional $3000 to your total but can help prevent future, expensive issues.
Normal quiet breathing moves about __________ mL of air into and out of the lungs with each breath. 500. A mechanism that clears the upper respiratory passages, which is similar to a cough except that the expelled air is directed through the nasal cavities instead of the oral cavity, is called a __________. sneeze.
Clearing the Air. The respiratory system has built-in methods to prevent harmful substances in the air from entering the lungs. Hairs in your nose help filter out large particles. Microscopic hairs, called cilia, are found along your air passages and move in a sweeping motion to keep the air passages clean.