Finally, do not apply asphalt over a newly sealed surface. The surface should be grey, much like the street in front of your house. Although the binder coat may last by itself, a finer aggregate top coat will provide a surface that is more resistant to water infiltration and damage.
24. Gases in the alveoli must cross two layers of epithelium and a layer of fused basement membrane to reach the blood. True. False. 25. There are two folds of muscle and connective tissue in the larynx called the vocal cords or vocal folds; the inferior pair are the true vocal cords involved in speech.4. Gases in the alveoli must cross two layers of epithelium and a layer of fused basement membrane to reach the blood. True. False. 25. There are two folds of muscle and connective tissue in the larynx called the vocal cords or vocal folds; the inferior pair are the true vocal cords involved in speech.
Vocal Fold Paralysis. The vocal cords are two elastic bands of muscle tissue located in the voice box (larynx) directly above the windpipe (trachea). These cords allow you to speak because when air held in the lungs is released and passed through the closed vocal cords, it causes them to vibrate. When you are not speaking, the vocal cords remain apart so you can breathe. Vocal cord paralysis occurs when one or both of the vocal cords (vocal folds) do not open or close properly. The paralyzed cord or cords remain open, leaving the airway passage and the lungs unprotected. The condition makes it difficult to swallow or cough because food or liquids slip into the trachea and lungs.