Lab_Ex36_HW

Lab_Ex36_HW - Melissa Pomeroy Salti BI 233 Lab HW Lab 36

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Melissa Pomeroy Salti – BI 233 – Lab HW Lab 36 Exercise 36 Homework – Anatomy of Respiratory System  What is the function of the epiglottis cartilage? The function of the epiglottis cartilage is to prevent food and liquid from entering the trachea. When we swallow, it closes like a lid over the airway, which is why it is also known as the “guardian of the airways”. (p. 539 of Lab Book) Which vocal cord attach to the arytenoid cartilage posteriorly?   The true vocal cords are attached to the arytenoids cartilage posteriorly. Which cartilage in the larynx has a complete ring? The cricoid cartilage in the larynx has a complete ring. Which cartilage forms the Adam’s apple. The thyroid cartilage has an anterior prominence that is known as the Adam’s apple. Name two functions of the nasal mucosa. 1) It warms and moistens the air. 2) It traps, and helps to prevent particles and bacteria from entering the lungs. The rings of the trachea are incomplete posteriorly, what is the significance of that? The significance of the incomplete rings of the trachea posteriorly is to allow for the occasional and temporary expansion anteriorly of the esophagus as food is swallowed. Trace a molecule of Oxygen from the external nareses to the pulmonary capillaries of the lungs. A O 2 molecule enters the external nares --> goes into one of the two nasal cavities --> flows around the inferior, middle and superior nasal conchae --> passes by the olfactory receptors in the superior nasal cavity --> goes into the nasopharynx, then oropharynx, then laryngopharynx --> through the larynx --> through the glottis --> into the trachea flowing downward --> then it flows either into the right or left primary bronchus --> which then enters the lung through the hilum --> enters the secondary bronchus --> enters the tertiary
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This note was uploaded on 05/29/2011 for the course BIO 233 taught by Professor Salti during the Spring '11 term at Portland CC.

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Lab_Ex36_HW - Melissa Pomeroy Salti BI 233 Lab HW Lab 36

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