Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Question
Chapter 41, Problem 2TY
Summary Introduction
Introduction:
Hemorrhage is the loss of blood from a damaged blood vessel. It may decrease oxygen and nutrient delivery to the cells. Blood volume and blood pressure are closely related and directly proportional to each other. A decrease in volume due to hemorrhage can lead to a fall in the pressure as well.
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In veins the ______ than in capillaries.
A
blood pressure is higher and flow velocity is slower
B
"blood pressure is the same, but rate of flow is lower"
C
blood pressure is lower
D
total blood volume is lower
Describe the normal anatomy (structure) and physiology (function) of the cardiovascular system and the control of blood pressure...keywords cardiac output, baroreceptors, Autonomic system, blood pressure.
Describe the altered path of blood flow.
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- Lower-than-normal blood pressure is called _______________________.arrow_forwardThe death of the walls of blood vessels is ____________________.arrow_forwardSeveral years ago the deaths of several airline travelers led to warnings about economy-class syndrome. The idea is that economy-class passengers dont have as much leg room as passengers in more expensive seats, so they are more likely to sit essentially motionless for long periods on flightsconditions that may allow blood to pool and clots to form in the legs. This condition is called deep-vein thrombosis, or DVT. Given what you know about blood flow in the veins, explain why periodically getting up and moving around in the planes cabin during a long flight may lower the risk that a clot will form.arrow_forward
- Draw a flow diagram illustrating the reflex compensation for hemorrhagearrow_forwardWhen a person engages in strenuous, prolonged exercise, a. blood flow to the kidneys is reduced.b. cardiac output is reduced.c. total peripheral resistance increases.d. systolic arterial blood pressure is reduced.e. blood flow to the brain is reduced.arrow_forwardDuring the first day of your clinical internship in the emergency room of the local hospital, you observe two individuals succumb in separate incidences due to gun shot wounds. in both cases, there is a significant amount of blood loss by each victim. Based on what you have learned regarding the cardiovascular system, explain what might be happening in these individuals as a result of their significant blood loss. Ignore damage to internal organs that most likely occurred and focus on the blood loss. Respond to a classmate's post by explaining why you agree or disagree with the responses they propose and build on their response where possiblearrow_forward
- create a flow chart showing the pathway of blood moving through the arteries, capillaries, and veins of kidney. start with blood in the descending aorta and end with the blood in the inferior vena cava.arrow_forwardWhich of the following would increase the resistance to blood flow? Group of answer choices All of these increase resistance A decrease in blood viscosity A decrease in vessel length A decrease in blood vessel radius or diameterarrow_forwardWhich of the following would increase flow? Vasoconstriction of the artery An increase in blood viscosity An increase in resistance An increase in stroke volumearrow_forward
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