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Sallie Lu stack 2
assignment 2
| Question | Answer |
|---|---|
| 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. |
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sall23
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