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.
Lower respiratory tract. The major passages and structures of the lower respiratory tract include the windpipe (trachea) and within the lungs, the bronchi, bronchioles, and alveoli. After the inhaled air moves through the larynx, it reaches the trachea. The trachea is a rigid tube about 4.5 inches long and 1 inch wide. Embedded in the walls of the trachea, C-shaped cartilage rings give the trachea rigidity and allow it to stay open all the time.