Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
expand_more
expand_more
format_list_bulleted
Question
Chapter 16, Problem 12RA
Summary Introduction
To determine:
The source of stimulation of a chemoreceptor in the medulla.
Introduction:
During heavy exercise or physical work, the requirement for oxygen in the tissues getsincreased. Cardiovascular system gets stimulated by various neurogenic and humoral stimuli in order to raise the oxygen supply to the body. The medulla gets stimuli from the chemoreceptors in order to increase the oxygen supply to the tissues.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which of the following are true?
A. Peripheral Chemo receptors for O2 in H+ ions are found in the carotid and aortic bodies.
B. Peripheral chemoreceptors for O2 and H+ ions are found only in the carotid body.
C. Peripheral chemoreceptors for O2 and H+ ions are found only in the aortic body.
D. O2 and CO2 are monitored in the medulla
Choose the correct answer
Peripheral chemoreceptors in the aortic bodies and central chemoreceptors respond to changes in which of the following physiologic parameters?
a. H+ alone
b. Both H+ and PCO2
c. H+, PCO2, and PO2
d. PO2 alone
e. PCO2 alone
The chemoreceptors in the medulla are directly stimulated byA. CO2 from the bloodB. H+ from the bloodC. H+ in cerebrospinal fluid that is derived from blood CO2D. Decreased arterial PO2
Chapter 16 Solutions
Human Physiology
Ch. 16 - Describe the structures involved in gas exchange...Ch. 16 - Prob. 1bCPCh. 16 - Describe how each lung is compartmentalized by the...Ch. 16 - Describe the changes in the intrapulmonary and...Ch. 16 - Explain how the compliance and elasticity of the...Ch. 16 - Describe pulmonary surfactant and discuss its...Ch. 16 - Describe the actions of the diaphragm and external...Ch. 16 - Explain how forced inspiration and forced...Ch. 16 - Define the terms tidal volume and vital capacity....Ch. 16 - How are the vital capacity and the forced...
Ch. 16 - Explain how the of air is calculated and how this...Ch. 16 - Explain how blood measurements are taken, and...Ch. 16 - Explain how the arterial and the oxygen content...Ch. 16 - Describe the ventilation/perfusion ratios of the...Ch. 16 - Explain how decompression sickness is produced in...Ch. 16 - Describe the roles of centers in the brain stem...Ch. 16 - Describe the effects of voluntary hyperventilation...Ch. 16 - Using a flowchart to show a negative feedback...Ch. 16 - Prob. 10bCPCh. 16 - Prob. 10cCPCh. 16 - Use a graph to illustrate the effects of Po2 on...Ch. 16 - Draw an oxyhemoglobin dissociation curve and label...Ch. 16 - Prob. 12aCPCh. 16 - Prob. 12bCPCh. 16 - List the ways in which carbon dioxide is carried...Ch. 16 - Where in the body does the chloride shift occur?...Ch. 16 - Where in the body does a reverse chloride shift...Ch. 16 - Using equations, show how carbonic acid and...Ch. 16 - Prob. 15aCPCh. 16 - Prob. 15bCPCh. 16 - Prob. 15cCPCh. 16 - Prob. 15dCPCh. 16 - Explain why a person with ketoacidosis...Ch. 16 - Prob. 16aCPCh. 16 - Explain why endurance-trained athletes have a...Ch. 16 - Prob. 17CPCh. 16 - Prob. 1RACh. 16 - Prob. 2RACh. 16 - The maximum amount of air that can be expired...Ch. 16 - Prob. 4RACh. 16 - Prob. 5RACh. 16 - Which of these would be most affected by a...Ch. 16 - Prob. 7RACh. 16 - Prob. 8RACh. 16 - The affinity of hemoglobin for oxygen is decreased...Ch. 16 - Prob. 10RACh. 16 - The bicarbonate concentration or the blood would...Ch. 16 - Prob. 12RACh. 16 - Prob. 13RACh. 16 - Which of these occur(s) during hypoxemia?...Ch. 16 - During exercise, which of these statements is...Ch. 16 - All of the following can bond with hemoglobin...Ch. 16 - Prob. 17RACh. 16 - The hypoxic ventilatory response occurs when low...Ch. 16 - Using a flow diagram to show cause and effect,...Ch. 16 - Radiographic (x-ray) pictures show that the rib...Ch. 16 - Explain, using a flowchart, how a rise in blood ...Ch. 16 - Explain why a person with ketoacidosis may...Ch. 16 - Prob. 23RACh. 16 - Explain how measurements of blood Pco2,...Ch. 16 - Describe the changes in ventilation that occur...Ch. 16 - Prob. 26RACh. 16 - Describe how ventilation changes when a person...Ch. 16 - Explain the physiological changes in the blood's...Ch. 16 - Compare asthma and emphysema in terms of their...Ch. 16 - Explain the mechanisms involved in quiet...Ch. 16 - Describe the formation, composition, and function...Ch. 16 - Prob. 32RACh. 16 - The nature of the sounds produced by percussion...Ch. 16 - Explain why the fast breath of a healthy neonate...Ch. 16 - Prob. 35RACh. 16 - Carbon monoxide poisoning from smoke inhalation...Ch. 16 - Prob. 37RACh. 16 - Explain how a subatmospheric intrapleural pressure...Ch. 16 - Prob. 39RACh. 16 - You cannot affect the oxygen delivery to your...Ch. 16 - Refer to figure 16.19 and calculate the Po2 of the...Ch. 16 - Refer to figure 16.19 and calculate the of the...Ch. 16 - Refer to figure 16.19 and calculate the Po2 of the...Ch. 16 - Use figure 16.34 to answer the following...Ch. 16 - Prob. 45RACh. 16 - Use figure 16.34 to answer the following...Ch. 16 - Prob. 47RA
Knowledge Booster
Similar questions
- The chemoreceptor reflexes help maintain homeostasis Select one: a. when H+ concentrations decrease. b. when epinephrine levels increase. c. under normal conditions. d. when carbon dioxide levels increase. e. when stimulated by changes in blood osmotic pressure.arrow_forwardPeripheral chemoreceptors in the aortic bodies and central chemoreceptors respond to changes in which of the following physiologic parameters? A. H+ alone B. PO2 alone C. H+, PCO2 and PO2 D. PCO2 alone E. Both H+ and PCO2 Which of the following hormones is produced in the hypothalamus and is responsible for stimulating the pituitary gland to release gonadotropins? A. FSH B. Estrogen C. GnRH D. Progesterone E. LHarrow_forwardWhich of the following is true?a. Peripheral chemoreceptors increase firing with low arterial PO2 but are not sensitive to an increase in arterial PCO2.b. The primary stimulus to the central chemoreceptors is low arterial PO2.c. Peripheral chemoreceptors increase firing during a metabolic alkalosis.d. The increase in ventilation during exercise is due to a decrease in arterial PO2.e. Peripheral and central chemoreceptors both increase firing when arterial PCO2 increases.arrow_forward
- The increased ventilation that occurs due to decreased arterial pH (= increased hydrogen ion) is mediated through the: a. peripheral chemoreceptors b. central chemoreceptors c. both of the above d. none of the abovearrow_forwardStimulation of the peripheral chemoreceptors can cause which of the following? 1. Tachycardia 2. Decreased left ventricular performance 3. Increased pulmonary vascular resistance 4. Systemic arterial hypertensionA. 1 only B. 2 only C. 4 only D. 1, 3, and 4 onlyarrow_forwardA respiratory chemoreceptor is a sensory receptor that transduces achemical signal into an action potential. Which of the following is FALSEabout the respiratory chemoreceptors? Explain the answer. a. The central chemoreceptor is located at the primary respiratory control in the brain.b. The peripheral chemoreceptors are at the lower airways of the respiratory zone.c. Central chemoreceptors are sensitive to increased carbon dioxide.d. Peripheral chemoreceptors are sensitive to decreased oxygen levels.arrow_forward
- Which of the following statements is incorrect? a. a sudden increase in CO2 levels in the arterial blood will lead to an increase H+b. H+ freely cross the blood brain barrier equilibrating with H+ in the CSF c. H+ within the CSF act directly on central chemoreceptors to increase ventilation d. increases in ventilation will reduce arterial blood H+ e. a reduction in arterial blood H+ represents a relative alkalosisarrow_forwardVentilation in the capillaries is matched to perfusion. This means that a. blood pressure from capillaries must match the pressure from the arterioles b. gas pressure in the alveolar must match the pressure in the bronchioles c. ventilation is never profuse enough d. ventilation in the alveolar must match the blood flow passing over those alveiolararrow_forwardWhich of the following is NOT a function of the pleurae and pleural fluid? A. decreasing friction within the pleural space B. compartmentalizing the thorax and preventing infections from spreading to the heart C. assisting with the development of an intra-pleural pressure that leads to inspiration D. removing dust and inhaled debris from the airwaysarrow_forward
- I. the first quantity is larger of the 2II. the second quantity is larger of the 2III. they're equal1. a. The percentage of oxygen dissolved in plasma. b. The percentage of oxygen transported as oxyhemoglobin2.a. Resistance to airflow in a bronchioleb. Resistance to airflow in the trachea3.a. Atmospheric pressure during inspirationb. Pulmonary pressure during inspirationarrow_forwardChemoreceptors sensitive to blood carbon dioxide levels are primarily located in the Select one: a. right atrium. b. left ventricle. c. medulla oblongata. d. carotid arteries. e. jugular veins.arrow_forwardGiven these ways of transporting carbon dioxide in the blood:(1) bicarbonate ions(2) combined with blood proteins(3) dissolved in plasmaChoose the arrangement that lists them in the correct order from largest to smallest percentage of carbon dioxide transported.a. 1,2,3 c. 2,3,1 e. 3,1,2b. 1,3,2 d. 2,1,3arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:CengageEssentials of Pharmacology for Health ProfessionsNursingISBN:9781305441620Author:WOODROWPublisher:Cengage
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Basic Clinical Lab Competencies for Respiratory C...
Nursing
ISBN:9781285244662
Author:White
Publisher:Cengage
Essentials of Pharmacology for Health Professions
Nursing
ISBN:9781305441620
Author:WOODROW
Publisher:Cengage
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning