Human Physiology: An Integrated Approach (7th Edition)
7th Edition
ISBN: 9780321981226
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 14, Problem 5RQ
Summary Introduction
Introduction: Heart pumps the oxygenated blood in the body with the help of arteries and arterioles. Veins carry deoxygenated blood to the heart. The flow of blood though the blood vessels depend upon three factors: peripheral resistance, the diameter of the blood vessels, and volume of the blood.
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Vasodilation is a widening of the lumen of a blood vessel due to smooth muscle relaxation.
True
False
Systemic vasoconstriction decreases blood pressure. True or False
b) What effect does vasodilation have on blood pressure? Explain why. How will her body try to bring her blood pressure back to homeostasis?
Be detailed in your explanation and support your answer with facts from your textbook, research, and articles from scholarly journals. In addition, remember to add references in APA format to your posts to avoid plagiarism.
Chapter 14 Solutions
Human Physiology: An Integrated Approach (7th Edition)
Ch. 14 - A cardiovascular system has what three major...Ch. 14 - What is the difference between (a) the pulmonary...Ch. 14 - Which is more important for determining flow...Ch. 14 - The two identical tubes below have the pressures...Ch. 14 - All four tubes below have the same driving...Ch. 14 - Two canals in Amsterdam are identical in size, but...Ch. 14 - What prevents electrical signals from passing...Ch. 14 - Prob. 8CCCh. 14 - Prob. 9CCCh. 14 - Compare the receptors and channels involved in...
Ch. 14 - If a myocardial contractile cell is placed in...Ch. 14 - A drug that blocks all Ca2+ channels in the...Ch. 14 - Which ions moving in what directions cause the...Ch. 14 - At the molecular level, what is happening during...Ch. 14 - Lidocaine is a molecule that blocks the action of...Ch. 14 - What does increasing K+ permeability do to the...Ch. 14 - A new cardiac drug called ivabradine selectively...Ch. 14 - Do you think that the Ca2+ channels in...Ch. 14 - What happens to the action potential of a...Ch. 14 - In an experiment, the vagus nerve, which carries...Ch. 14 - Name two functions of the AV node. What is the...Ch. 14 - Prob. 22CCCh. 14 - Occasionally an ectopic pacemaker {ktopos, out of...Ch. 14 - Prob. 24CCCh. 14 - Which chamberatrium or ventriclehas higher...Ch. 14 - Prob. 26CCCh. 14 - Prob. 27CCCh. 14 - Prob. 28CCCh. 14 - Prob. 29CCCh. 14 - Why does ventricular pressure shoot up suddenly at...Ch. 14 - Prob. 31CCCh. 14 - Prob. 32CCCh. 14 - A persons aortic valve opening has become...Ch. 14 - What contributions to understanding the...Ch. 14 - List three functions of the cardiovascular system.Ch. 14 - Prob. 3RQCh. 14 - Prob. 4RQCh. 14 - Prob. 5RQCh. 14 - Prob. 6RQCh. 14 - Prob. 7RQCh. 14 - Distinguish between the two members of each of the...Ch. 14 - Prob. 9RQCh. 14 - Prob. 10RQCh. 14 - What is the proper term for each of the following?...Ch. 14 - List the events of the cardiac cycle in sequence,...Ch. 14 - Prob. 13RQCh. 14 - Compare and contrast the structure of a cardiac...Ch. 14 - Prob. 15RQCh. 14 - Correlate the waves of an ECG with mechanical...Ch. 14 - Prob. 17RQCh. 14 - List and briefly explain four types of information...Ch. 14 - Define inotropic effect. Name two drugs that have...Ch. 14 - Prob. 20RQCh. 14 - Police Captain Jeffers has suffered a myocardial...Ch. 14 - Prob. 22RQCh. 14 - Prob. 23RQCh. 14 - Police Captain Jeffers in question 21 has an...Ch. 14 - Prob. 25RQCh. 14 - Prob. 26RQCh. 14 - Prob. 27RQCh. 14 - A person has a total blood volume of 5 L. Of this...
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- Lower-than-normal blood pressure is called _______________________.arrow_forwardVasoconstriction of the renal arteries (arteries supplying blood to kidneys) would decrease blood flow to the kidneys. True or Falsearrow_forwardFill in the blank: Relaxation of the _______________________ in a blood vessel wall results in the vessel being in a condition of vasodilation.arrow_forward
- Increasing arterial blood pressure increases blood flow. True or Falsearrow_forwardThe blood pressure gradient from the aorta to the capillaries is less than the blood pressure gradient from the arterial end of the capillary to the venous end of the capillary. True or Falsearrow_forwardThe angiogenesis are vasodilation of blood vessels Select one: True Falsearrow_forward
- Blood pressure is higher in the supine position than in the standing position. True or Falsearrow_forwardHydrostatic pressure forces plasma across capillary walls at venous end of capillary, and interstitial fluid enters arterial end of capillary by osmotic pressure. True or Falsearrow_forwardThe ECG records the electrical stimulation of cardiac muscle by the conduction system and not the contraction of the muscle itself. True or Falsearrow_forward
- Select the best options; (Osmosis) (Filtration) occurs close to the arterial side of the capillary bed, while (colloid osmotic pressure) (diffusion) operates toward the venous side.arrow_forwardThe ECG records the electrical stimulation of cardiac muscle by theconduction system and not the contraction of the muscle itself. True or Falsearrow_forwardIndicate which of the following involves filtration by answering yes or no Blood pressure forces water molecules from the blood outward through the thin wall of a bloodcapillary.___________arrow_forward
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