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Sallie Lu stack 2

assignment 2

What is the upper respiratory tract composed of? The upper respiratory tract is composed of the nose, nasophar-ynx, oropharynx, laryngopharynx, and larynx.
What is the lower respiratory tract made up of? The lower respiratory tract, or division, consists of the trachea, all segments of the bron-chial tree, and the lungs
What are the functions of the alveloi? Exchange of gases (CO2, O2) between air and pulmonary blood Surfactant lining alveoli prevents collapse of air spaces Structural interdependence of connected alveoli also helps prevent collapse
What is pulmonary ventiliation and name two phases. Pulmonary ventilation is a technical term for what most of us call breathing. One phase of it, inspiration, moves air into the lungs, and the other phase, expiration, moves air out of the lungs
What is partial pressure? Partial pressure is the pressure exerted by any one gas in a mixture of gases or in a liquid.
What is the law of partial pressures? The partial pressure of a gas in a mixture of gases is directly related to the concentration of that gas in the mixture and to the total pressure of the mixture.
What is the process of swallowing called? Deglutition
Describe peristalsis. Peristalsis is often described as a wavelike ripple of the muscle layer of a hollow organ.
What are enzymes? Enzymes aare “organic catalysts” that accelerate chemical reactions without appearing in the final products of the reaction.
What is phosphorylation? Phosphorylation is the process of add-ing a phosphate group to a molecule.
Name some examples of dietary lipids. Triglycerides, phospholipids and cholesterol
What is the function of calcitriol? It helps plays a role in the regulation of calcium homeostasis in the body.
Created by: sall23



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