1. You find a person in the desert in distress and in tachycardia, but you have
ID: 3521521 • Letter: 1
Question
1. You find a person in the desert in distress and in tachycardia, but you have no cell phone reception, so you can't call for help. You decide to do a carotid sinus massage. What is the result and WHY does it work?
d. all of the above
2. How does pulmonary ventilation affect venous return?
d. inspiration lowers heart rate
3. Match the correct anatomic location and function in regards to the respiratory system.
a. elevates HR: osmoreceptors signal CV center, cardiac accelerator nerves innervate SA nodeExplanation / Answer
1. b. lowers HR: baroreceptors signal CV center, vagus nerve innervates SA node.
2. a. expiration lowers stroke volume
3. a. alveoli: gas exchange between air and blood
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