Anatomy And Physiology Comprehensive Study Guide Detailed

ANATOMY AND PHYSIOLOGY COMPREHENSIVE STUDY GUIDE - DETAILED EXPLANATIONS, RATIONALES, AND CHAPTER SUMMARIES Question 1 The anatomical landmark at the bifurcation of the trachea into the right and left mainstem bronchi is the: o Carina o Apex o Cricoid cartilage o Hilum ExplanationThe carina is a ridge of cartilage at the base of the trachea that separates the openings of the right and left main bronchi. 2. Question 2 What is the normal I/E ratio in a resting adult? o 1:1 o 1:3 o 2:1 o 1:2 ExplanationIn a normal resting adult, the inspiratory/expiratory ratio is 1:2, meaning exhalation takes twice as long as inhalation. 3. Question 3 What is the main concern when administering opioids in a prehospital setting?o Increased heart rate o Hypertension o Respiratory depression o Diarrhea ExplanationOpioids can depress the respiratory center in the brain, leading to decreased breathing rates, which can be life-threatening. 4. Question 4 How does a negative feedback system work in hormone regulation? o A rising level of a hormone or its product inhibits its own further release. o Hormone levels are kept constant at all times. o A hormone's effect stimulates more production of that hormone. o The nervous system directly