Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 36, Problem 2CT
Beta blockers are drugs that interfere with stimulation of organs by nerves of the sympathetic system. Would these drugs be useful in treating excessively high blood pressure or excessively low blood pressure?
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Chapter 36 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 36 - Prob. 1SQCh. 36 - In__________, blood flows through two completely...Ch. 36 - The __________ circuit carries blood to and from...Ch. 36 - Prob. 1DAACh. 36 - Prob. 2DAACh. 36 - Prob. 3DAACh. 36 - Prob. 4DAACh. 36 - Prob. 4SQCh. 36 - Platelets function in __________. a. oxygen...Ch. 36 - Prob. 6SQ
Ch. 36 - Blood flows directly from the left atrium to...Ch. 36 - Contraction of __________ drives the flow of blood...Ch. 36 - Blood pressure is highest in the _______ and...Ch. 36 - At rest, the largest volume of blood is...Ch. 36 - Which of the following has the thickest wall? a....Ch. 36 - Lymph nodes filter__________. a. blood b. lymph c....Ch. 36 - Which artery carries oxygen-poor blood?Ch. 36 - Prob. 14SQCh. 36 - Match the terms with their definition. _____bone...Ch. 36 - Explain why a blood clot that forms in the leg,...Ch. 36 - Beta blockers are drugs that interfere with...Ch. 36 - Patients with severe liver disease often have...
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- In response to a severe hemorrhage, blood pressure lowers, the heart rate increases dramatically, and the stroke volume lowers. If low blood pressure activates a reflex that increases sympathetic stimulation of the heart, why is the stroke volume low?arrow_forwardPeople with allergies frequently take antihistamines and decongestants to relieve their symptoms. (These medications mimic the effects of sympathetic stimulation.) The medications’ labels warn that such medications should notbe taken by individuals being treated for high blood pressure. Why?arrow_forwardWhen a person is very stressed and tense, his or her blood pressure typically rises. What aspect of the sympathetic division causes this rise in blood pressure?arrow_forward
- What effect will an increase in sympathetic activity have on heart rate, force of contraction, and arteriolar diameter?arrow_forwardPeople with allergies frequently take antihistamines and decongestants to relieve their symptoms. (These medica- tions mimic the effects of sympathetic stimulation.) The medications’ labels warn that such medications should not be taken by individuals being treated for high blood pressure. Why?arrow_forwardSympathetic stimulation of blood vessels maintains a state of partial vasoconstriction called _____.arrow_forward
- What effect does sympathetic stimulation have on the heart?arrow_forwardSympathetic stimulation increases the phosphorylation of the Ca2+ATPase in the sarcoplasmic reticulum. What effect does this have on cardiac function? It increases the rate of diastole It decreases the stretch of the ventricles The rate of systole decreasesarrow_forwardAtropine works by blocking acetylcholine receptors. If you add acetylcholine to the heart, followed by atropine, what would you expect to happen? Explain.arrow_forward
- Which of the following would increase blood pressure? Group of answer choices Increased parasympathetic activity Decreased heart rate Vasodilation of blood vessels Increasing resistance in blood vesselsarrow_forwardDescribe neural and chemical (both systemic and local) effects exerted on the blood vessels when you are fleeing from a mugger.arrow_forwardWhich of the following would NOT result from an increase in sympathetic stimulation of the heart? A increased force of ventricular contraction B increased calcium concentration in the fluid surrounding the actin and myosin during contraction C increased heart rate D increased number of motor units activated E increased cardiac outputarrow_forward
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