ANATOMY+PHYSIOLOGY (LL) >CUSTOM PKG.<
4th Edition
ISBN: 9781264457861
Author: McKinley
Publisher: MCG CUSTOM
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Chapter 20, Problem 3CAL
Summary Introduction
Introduction:
Baroreceptor stimulates the vasomotor center to increase the signal along the sympathetic pathway that extends to a blood vessel (vasoconstriction). This results in an increase the blood flow through the blood vessels.
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At point A, note that mean arterial blood pressure (MABP) is slightly lowered despite the large fall in cardiac output (CO).
a. Why is CO decreased in response to hemorrhage?
b. How is blood pressure maintained so well despite the fall in CO?
c. What are the afferent receptors (sensors) responsible for this relatively well-maintained blood pressure at point A?
d. What changes in stimuli for these receptors may be contributing to the response at point A?
e. What efferent mechanisms mediate the increase in total peripheral resistance (TPR)?
Mr. Rogers is admitted into the Emergency room. When asked about his symptoms, Mr. Rogers claims that he feels pain whenever he touches his left forearm. The patient has no lesion, no history with injury to his forearm, and does not have a sunburn. His blood pressure and cholesterol levels are normal and overall Mr Rogers seems like a healthy man. What is Mr. Rogers suffering from?
A.
Referred pain from a myocardial infarction
B.
Diffuse pain from activation of Aδ and C fibers
C.
Allodynia
D.
Hyperalgesia
E.
“Wind up”, a pain-induced persistent increases in excitability and synaptic transmission in the ventral horn
F.
Habituation
Fill in the following blanks (a - f) regarding the Baroreceptor Reflex Control:
The baroreceptor reflex control is a negative feedback loop.
If the patient is hypotensive, they are experiencing a decrease in blood pressure detected by
(a.)_
located in the aortic and carotid bodies.
The afferent pathways include the (b.)_
nerve and the (c.)__
nerve.
These synapse at the cardioregulatory and vasomotor integration centers located in the
(d.)_
These centers will cause the heart rate to (e.)(increase/decrease) and blood vessels to (f.)
(vasodilate/vasocontrict).
For the toolbar press ALT+510 (BC) or ALTHEN±+510/Mad
Chapter 20 Solutions
ANATOMY+PHYSIOLOGY (LL) >CUSTOM PKG.<
Ch. 20.1 - What are three differences in anatomic structure...Ch. 20.1 - Prob. 2WDYLCh. 20.1 - What type of capillary is the most permeable, and...Ch. 20.1 - Prob. 4WDYLCh. 20.1 - Prob. 5WDYLCh. 20.2 - In which type of vessel is blood flow the slowest?...Ch. 20.3 - What substances are transported by diffusion...Ch. 20.3 - Prob. 8WDYLCh. 20.3 - How does the hydrostatic pressure change from the...Ch. 20.3 - Which two pressures have the largest values?...
Ch. 20.3 - If these lymph vessels were nonfunctional, what...Ch. 20.4 - In what ways is angiogenesis stimulated in...Ch. 20.4 - Prob. 13WDYLCh. 20.4 - What relationship exists between metabolic...Ch. 20.4 - Prob. 15WDYLCh. 20.5 - Prob. 16WDYLCh. 20.5 - Prob. 17WDYLCh. 20.5 - How is the small pressure gradient in veins...Ch. 20.5 - How is the pressure gradient to move blood through...Ch. 20.5 - How is resistance defined?Ch. 20.5 - What are the three factors that alter resistance?...Ch. 20.5 - Prob. 22WDYLCh. 20.6 - Prob. 23WDYLCh. 20.6 - What is the initial change to blood pressure when...Ch. 20.6 - Prob. 25WDYLCh. 20.6 - Prob. 26WDYLCh. 20.7 - Which organs have an increased proportion of...Ch. 20.8 - Prob. 28WDYLCh. 20.8 - Prob. 29WDYLCh. 20.9 - Prob. 30WDYLCh. 20.9 - Prob. 31WDYLCh. 20.10 - Prob. 32WDYLCh. 20.10 - Prob. 33WDYLCh. 20.10 - Prob. 34WDYLCh. 20.10 - What are the systemic arteries that supply...Ch. 20.10 - Prob. 36WDYLCh. 20.10 - Prob. 37WDYLCh. 20.10 - Prob. 38WDYLCh. 20.11 - Prob. 39WDYLCh. 20.11 - Prob. 40WDYLCh. 20.11 - Prob. 41WDYLCh. 20.11 - Prob. 42WDYLCh. 20.12 - List the five structures of fetal circulation, and...Ch. 20.12 - Prob. 44WDYLCh. 20 - _____ 1. Which of the following is not a...Ch. 20 - _____ 2. Which statement is accurate about veins?...Ch. 20 - _____ 3. Vasa vasorum are found in the tunica...Ch. 20 - _____ 4. Which of the following decreases...Ch. 20 - _____ 5. The __________ is a type of vessel with...Ch. 20 - _____ 6. An increase in _____ will result in an...Ch. 20 - Prob. 7DYKBCh. 20 - _____ 8. Velocity of blood flow is the slowest in...Ch. 20 - _____ 9. Blood pressure is regulated by the a....Ch. 20 - _____ 10. Name the correct pathway that blood...Ch. 20 - Prob. 11DYKBCh. 20 - Prob. 12DYKBCh. 20 - Explain the difference between hydrostatic and...Ch. 20 - Write the formula for determining net filtration...Ch. 20 - Prob. 15DYKBCh. 20 - Prob. 16DYKBCh. 20 - Briefly explain how changes in cardiac output,...Ch. 20 - Compare how the cardiac center and vasomotor...Ch. 20 - Prob. 19DYKBCh. 20 - What postnatal changes occur in the heart and...Ch. 20 - If a patient has cirrhosis of the liver and is...Ch. 20 - Prob. 2CALCh. 20 - Prob. 3CALCh. 20 - Prob. 4CALCh. 20 - Prob. 5CALCh. 20 - Prob. 1CSLCh. 20 - Arteries tend to have a lot of vascular...Ch. 20 - Explain why an overweight individual with high...
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