Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 15, Problem 29RQ
Draw a reflex map that explains Anthony’s vasovagal syncope at the sight of blood. Include all the steps of the reflex, and explain whether autonomic pathways are being stimulated or inhibited.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
In an EKG reading:
| the P wave corresponds to the AV node firing.
the QRS complex corresponds to a time when ventricular pressure is
greater than atrial pressure.
When in sympathetic mode, the AV Bundle will be receiving impulses
at a faster rate then when in parasympathetic mode.
| The T wave represents the time when the SA node first fires.
The P-R interval represents the delay that occurs when the AV
Bundle transmits signals to the Purkinje fibers.
Hemorrhage is a serious, life-threatening situation. Discuss the various reflex compensatory response mechanisms, beginning with the arterial baroreceptor reflex compensation for hemorrhage. Discuss the mechanisms in steps, beginning with the hemorrhage as the stimulus. For each effector, describe the mechanism involved.
Explain the main steps and consequence of the baroreceptor-induced response when systemic vasoconstriction occurs. Describe the physiological benefit of the reflex action you identified.
Chapter 15 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 15.2 - Would you expect to find valves in the veins...Ch. 15.2 - Prob. 2CCCh. 15.2 - Who has the higher pulse pressure, someone with...Ch. 15.2 - The formula given for calculating MAP applies to a...Ch. 15.2 - Prob. 5CCCh. 15.3 - Resistance to blood flow is determined primarily...Ch. 15.3 - Prob. 7CCCh. 15.3 - Prob. 8CCCh. 15.3 - Skeletal muscle arterioles have both - and...Ch. 15.4 - Prob. 10CC
Ch. 15.4 - Prob. 11CCCh. 15.5 - Prob. 12CCCh. 15.5 - In the classic movie Jurassic Park, Dr. Ian...Ch. 15.6 - A man with liver disease loses the ability to...Ch. 15.6 - Prob. 15CCCh. 15.7 - Prob. 16CCCh. 15.7 - 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. 38RQCh. 15 - Prob. 39RQ
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
- 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/Madarrow_forwardExplain why orthostatic (postural) hypotension may occurwith vasodilator drugs.arrow_forwardIdentify the most commonly used antihypertensives that can produce orthostatic hypotension. Which of the drugs affecting the sympathetic nervous system can also cause bradycardia? Describe the most significant adverse effects of direct acting vasodilators. Compare their effects to phosphodiesterase inhibitors.arrow_forward
- PSVT is a regular supraventric ular tachycardia. What are the standard upper and lower limits on the rate, and how could you differentiate it from VT?arrow_forwardIn the following graphs of pacemaker potential recordings from the SA node, what graph represents what (ie parasympathetic nerve effect)arrow_forwardDescribe the contribution of myogenic tone to local regulation of blood flow. Describe the Bayliss effectarrow_forward
- Contraction of the atria begins at or soon after which of the following? P Q R S Tarrow_forwardIndicate the correct order of the sequence of events occurring during congestive heart failure. Order the sentences (Hint: End with "g") This question is a great summary of what happens, in steps, in congestive heart failure. a. narrowed bicuspid valve makes the L atrium pump harder in order to "push" blood into the L ventricle through an opening that is too narrow. b. pressure of the extra, backed up blood in the lung creates pressure in the capillaries that begin to leak fluid into the lung. c. extra "left-over" blood in the atrium that has not descended into the ventricle after a beat has nowhere to go. d. congenital heart defect causes a narrowed bicuspid valve e. not all blood gets "pushed" from the L atrium to the L ventricle during a regular heart beat f. blood that backed up in the L atrium with nowhere to go backs up further, into the pulmonary veins and eventually into the lung g. the patient gets less oxygen with each breath, feels tired all the time and is…arrow_forwardBelow is the homeostatic reflex arc for heart rate and blood pressure. Please note that this homeostatic reflex begins once the activity has stopped to reset resting HR. Please match the following statements (on the left) to the appropriate steps in the pathway (on the right). You will use each match once. Heart rate slows Medulla oblongata 1. Stimulus 2. Receptor SA node (pacemaker) of heart 3. Integrating center Decreased CO2 waste products due to decreased oxygen consumption. 4. Effector 5. Response Baroréceptors that monitor stretch of aorta and how fast the heart is beating. 1arrow_forward
- https://www.youtube.com/watch?v=t0IngUYN2OA https://www.youtube.com/watch?v=pPxnIh_WTb8 1) Blood pressure is measured with a 2) What is the average normal blood pressure for adults? Label which number is the systolic pressure and which is the diastolic pressure. 3) Describe the exact location you should place the blood pressure cuff 4) Identify three positions of the patient to obtain a BP. 5) How is the blood pressure recorded? 6) Describe the three major factors that may affect blood pressure. 7) What problems can result from high blood pressure Or (HYPERTENSION)? 8) What problems can result from low blood pressure OR (HYPOTENSION)? 9) What IS the effect of exercise on BP? How does the body benefit from this change in BP during exercise? 10) How would the BP of an anxious patient visiting a doctor be different than if the patient is calm? 11) In atherosclerosis, plaque builds up inside the arteries. How would this affect BP? Is this an example of…arrow_forwardAutorhythmic cells in the SA node intrinsically fire at a rate of - 90 action potentials per minute. At rest, the heart rate is lowered primarily through modulation by: O Decreased delivery of acetylcholine and increased delivery of norepinephrine Increased delivery of acetylcholine and decreased delivery of norepinephrine Cardiac contractile cells Decreased delivery of acetylcholine and decreased delivery of norepinephrine Increased delivery of acetylcholine and increased delivery of norepinephrine O O Oarrow_forwardBelow is the homeostatic reflex arc for heart rate and blood pressure. Please note that this homeostatic reflex begins once the activity has stopped to reset resting HR. Please match the following statements (on the left) to the appropriate steps in the pathway (on the right). You will use each match once. 6. 5 Heart rate slows Medulla oblongata 1. Stimulus 3 SA node (pacemaker) of 2. Receptor 2 heart 3. Integrating center Decreased CO2 waste products due to decreased oxygen consumption. 4. Effector 5. Response Baroréceptors that monitor stretch of aorta and how fast the heart is beating. 1arrow_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
- Essentials of Pharmacology for Health ProfessionsNursingISBN:9781305441620Author:WOODROWPublisher:Cengage
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Essentials of Pharmacology for Health Professions
Nursing
ISBN:9781305441620
Author:WOODROW
Publisher:Cengage
The Sensorimotor System and Human Reflexes; Author: Professor Dave Explains;https://www.youtube.com/watch?v=M0PEXquyhA4;License: Standard youtube license