EBK HUMAN PHYSIOLOGY
7th Edition
ISBN: 9780133983401
Author: Silverthorn
Publisher: YUZU
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Textbook Question
Chapter 15, Problem 1CC
Would you expect to find valves in the veins leading from the brain to the heart? Defend your answer.
Expert Solution & Answer
Summary Introduction
To determine: Whether valves can be found in the veins leading to the heart from the brain.
Introduction: The force that generates a flow of blood through the cardiovascular system is known as ventricular contraction. The flow of blood is directly proportional to the pressure gradient between any two ends.
Explanation of Solution
Veins arising from the brain do not need valves as the flow of blood occurs with the help of gravity. As the blood flows through the circulatory system, the blood pressure becomes highest in the arteries and decreases continuously. The vessels offer some resistance to blood flow, resulting in loss of energy. Finally, the pressure is decreased. The friction between the blood flows occurs due to blood flow resistance.
Conclusion
There are valves in the veins which leads to the heart from the brain/
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Chapter 15 Solutions
EBK HUMAN PHYSIOLOGY
Ch. 15 - Would you expect to find valves in the veins...Ch. 15 - Prob. 2CCCh. 15 - Who has the higher pulse pressure, someone with...Ch. 15 - The formula given for calculating MAP applies to a...Ch. 15 - Prob. 5CCCh. 15 - Resistance to blood flow is determined primarily...Ch. 15 - Prob. 7CCCh. 15 - Prob. 8CCCh. 15 - Skeletal muscle arterioles have both - and...Ch. 15 - Prob. 10CC
Ch. 15 - Prob. 11CCCh. 15 - Prob. 12CCCh. 15 - In the classic movie Jurassic Park, Dr. Ian...Ch. 15 - A man with liver disease loses the ability to...Ch. 15 - Prob. 15CCCh. 15 - Prob. 16CCCh. 15 - Malnourished children who have inadequate protein...Ch. 15 - Prob. 1RQCh. 15 - Prob. 2RQCh. 15 - Prob. 3RQCh. 15 - Prob. 4RQCh. 15 - Prob. 5RQCh. 15 - Prob. 6RQCh. 15 - List the factors that aid venous return to the...Ch. 15 - Prob. 8RQCh. 15 - Prob. 9RQCh. 15 - Prob. 10RQCh. 15 - Prob. 11RQCh. 15 - Most systemic arterioles are innervated by the...Ch. 15 - Match each event in the left column with all...Ch. 15 - Which organs receive more than two-thirds of the...Ch. 15 - By looking at the density of capillaries in a...Ch. 15 - Prob. 16RQCh. 15 - Prob. 17RQCh. 15 - Define edema. List some ways in which it can...Ch. 15 - Prob. 19RQCh. 15 - Prob. 20RQCh. 15 - Calcium channel blockers prevent Ca2+ movement...Ch. 15 - Prob. 22RQCh. 15 - Prob. 23RQCh. 15 - Define myogenic autoregulation. What mechanisms...Ch. 15 - Left ventricular failure may be accompanied by...Ch. 15 - Robert is a 52-year-old nonsmoker. He weighs 180...Ch. 15 - The following figure is a schematic representation...Ch. 15 - Prob. 28RQCh. 15 - Draw a reflex map that explains Anthonys vasovagal...Ch. 15 - Prob. 30RQCh. 15 - Prob. 31RQCh. 15 - Prob. 32RQCh. 15 - Prob. 33RQCh. 15 - Prob. 34RQCh. 15 - Prob. 35RQCh. 15 - Prob. 36RQCh. 15 - Prob. 37RQCh. 15 - Prob. 38RQ
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