EP HUMAN BIOLOGY-MODIFIED MASTERING
8th Edition
ISBN: 9780134326436
Author: Johnson
Publisher: PEARSON CO
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 8, Problem 1AWK
Summary Introduction
To review:
The reason for the change in different processes during exercise like cardiac output gets double but organs like kidney get 50% less blood flow than normal and skeletal muscles get 10-fold more blood.
Introduction:
During exercise
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Briefly describe the short term regulation of blood pressure and relate the failure of these compensatory mechanisms as experienced during orthostatic hypotension.
Describe the mechanisms that increase the cardiac output during exercise and that increase the rate of blood flow to the heart and skeletal muscles.
Blood doping (using injected substances to artificially enhance performance) is illegal in many
sports. Two substances used are erythropoietin and hypoxia-inducible factors (HIF). One of the
actions of HIF is to increase formation of new blood vessels (angiogenesis). Explain how
administering erythropoietin can increase performance and how HIF can increase performance
through angiogenesis.
Chapter 8 Solutions
EP HUMAN BIOLOGY-MODIFIED MASTERING
Ch. 8 -
1. Who do you want to help you decide which...Ch. 8 - Do you think cost-effectiveness should be a part...Ch. 8 -
1. Why is it so important that the heart always...Ch. 8 - Compare and contrast the structures and functions...Ch. 8 - Prob. 3CRCh. 8 - Describe the function of the heart valves.Ch. 8 - Compare the functions of the pulmonary circuit and...Ch. 8 -
6. Describe the cardiac cycle of relaxation and...Ch. 8 - Describe the function of the SA and AV nodes as...Ch. 8 - Prob. 8CR
Ch. 8 - Prob. 9CRCh. 8 - Prob. 10CRCh. 8 -
1. _______ carry blood away from the heart and...Ch. 8 - Prob. 2TYCh. 8 - Which of the choices represents the order of...Ch. 8 - Prob. 4TYCh. 8 - Prob. 5TYCh. 8 - Prob. 6TYCh. 8 - Prob. 7TYCh. 8 - A pacemaker is used to correct: a. coronary artery...Ch. 8 - Prob. 9TYCh. 8 - Prob. 10TYCh. 8 - Prob. 11TYCh. 8 - Prob. 12TYCh. 8 - Prob. 13TYCh. 8 - Prob. 14TYCh. 8 - Prob. 15TYCh. 8 - Prob. 1AWKCh. 8 - When a coronary artery bypass graft (CABG) is...Ch. 8 - Soldiers have to stand in formation at full...Ch. 8 - Prob. 4AWKCh. 8 - Prob. 5AWKCh. 8 - Ventricular fibrillation is a potentially fatal...Ch. 8 - Prob. 7AWKCh. 8 - Last night, you and your roommate were sound...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Define blood pressure and describe and compare specific types (e.g. arterial, MABP, venous, PP). Include their expected values or ranges. Explain what happens to pressure when blood flows further away from the heart. During the rest period before starting an exercise routine where is most of the blood concentrated? Upon initiating exercise what happens to blood flow and pressure?arrow_forwardExplain the following as applied in Hemodynamics; Preload , Contractibility and After-load . Discuss the changes caused by these terms on the cardiac outputarrow_forwardQ) For a person at rest, aortic blood pressure is about 120 (torr 120) and blood velocity is (25 cm/s). After that the person went on a sports tour and the blood velocity rose to the value (100 cm/s). Assuming that the blood height remains constant, calculate the blood pressure in the aorta during the tour. Note that the density of blood is 1060 kg/m3.arrow_forward
- From the experimental activity for PhysioEX Which of the following forms the (Y) axis of this graph Which of the following forms the (X) axis of this graph (A) Y - vessel length / X - flow rate (B) Y - flow rate / X - vessel length (C) Y - flow rate / X - peripheral resistance (D) Y - peripheral resistance / X - flow ratearrow_forwardDiscuss the regulation of cardiac output during exercise.arrow_forwardPredict the effect of each of the following conditions on blood flow:(a) vasoconstriction of blood vessels in the skin in response to coldexposure, (b) vasodilation of blood vessels in the skin in response toelevated body temperature, and (c) erythrocytosis, which results in agreatly increased hematocrit.arrow_forward
- The physiological significance of reactive hyperemia include which of the following? (Mark all that apply.) O The decrease in blood flow to a tissue leads to the accumulation of metabolic products and vasodilators in ECF/extracellular fluid. Removal of occlusion leads to a increase in resistance and a decrease in blood flow, due to vasodilators. O Dilatation of arterioles occur, but the occlusion prevents blood flow. Removal of occlusion leads to a decrease in resistance and an increase in blood flow, due to vasodilators. As vasodilators are removed, arterioles constrict and blood flow returns to normal. As vasodilators are removed, arterioles expand and blood flow increase above normal.. Dilatation of arterioles occur and occlusion allows blood to flow as normal.arrow_forwardGiven heart rate of 95 beats per minute, blood pressure of 125/90 mmHg, 0.2 mL O₂/mL systemic blood arterial oxygen content, 0.1 mL O₂/mL pulmonary arterial oxygen content, and 400 mL O₂/min oxygen consumption. Based on the information, calculate the i) stroke volume. and ii) total peripheral resistance. Show your work.arrow_forwardIndividuals with hypertension should avoid maximal effort resistance training (e.g., 1RM lifts) due to the sudden increases in blood pressure. true of falsearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning