|
Title: Physioex 9.0 Exercise 6 pre and post quizzes Activity 4 Post by: trin on Sep 16, 2012 Exercise 6: Cardiovascular Physiology: Activity 4: Examining the Effects of Chemical Modifiers on Heart Rate Lab Report
Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The parasympathetic nervous system releases __________ to affect heart rate. You correctly answered: d. acetylcholine 2. A cholinergic drug that worked the same as acetylcholine would You correctly answered: c. be an agonist and decrease heart rate. 3. Norepinephrine affects the heart rate by You correctly answered: a. increasing the rate of depolarization and increasing the frequency of action potentials. 4. The __________ receptor binds norepinephrine and epinephrine. You correctly answered: b. ß-1 adrenergic Post-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Pilocarpine decreased the heart rate. Typical of cholinergic agonists, it You correctly answered: b. decreased the frequency of action potentials. 2. The effect of atropine was to You correctly answered: c. mimic the sympathetic nervous system. 3. The modifiers tested that decrease the heart rate were You correctly answered: c. digitalis and pilocarpine. 4. To increase the heart rate, the best choices would be You correctly answered: b. epinephrine and atropine. |