Neural output from the brain stem regulated breathing including respiratory rate and depth. In a patient with damage to the medulla oblongata and subsequently to the phrenic nerve, which of the following would be true? a. the diaphragm may not be able to contract, resulting in respiratory arrest b. the respiratory rate and depth would increase as signals from the pons would increase

Neural output from the brain stem regulated breathing including respiratory rate and depth. In a patient with damage to the medulla oblongata and subsequently to the phrenic nerve, which of the following would be true? a. the diaphragm may not be able to contract, resulting in respiratory arrest b. the respiratory rate and depth would increase as signals from the pons would increase

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter10: The Respiratory System

Section: Chapter Questions

Problem 2CT

See similar textbooks

Similar questions

which of the following would not be a characteristic of respiratory responses to parasympathetic dominance? a. brochiodialation b. increased bronchial tone c. decreased breathing depth d. reduced breathing rate
The rhythmic control of breathing is produced by the activity of inspiratory and expiratory neurons in a. the medulla oblongata. b. the apneustic center of the pons. c. the pneumotaxic center of the pons. d. the cerebral cortex.
Explain how the rate of breathing is controlled by the nervous system. Include a symphathetic and a parasympathetic nerve
The nature of the sounds produced by percussion (tapping) of a patient’s chest can tell a physician a great deal about the condition of the organs within the thoracic cavity. Healthy, air-filled lungsresonate, or sound hollow. How do you think the lungs of a person with emphysema would sound in comparison to healthy lungs? What kind of sounds would be produced by a collapsed lung, or one thatwas partially filled with fluid?
Which statement about the regulation of respiration is FALSE? Group of answer choices Respiratory centers in the medulla control the transition from inspiration to expiration. Carbon dioxide concentration is the most important chemical stimulus for regulating respiratory rate. Chemoreceptors in the walls of various arteries are sensitive to carbon dioxide levels in the blood. A group of neurons in the ventral medulla only become active when we need to breathe forcefully. Chemoreceptors may be sensitive to oxygen, carbon dioxide, and/or hydrogen ion concentration.
Which 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.
1) During alveolar HYPERventilation, levels of blood CO2 drop while blood O2 is elevated. What reflexive responses will this stimulate from the CPG? a) Increased DRG and VRG activity in the medulla, stimulating I and E motor neurons. b) Decreased DRG and VRG activity in the medulla, stimulating I and E motor neurons. c) Decreased DRG and VRG activity in the medulla, inhibiting I and E motor neurons. d) Increased DRG and VRG activity in the medulla, inhibiting I and E motor neurons.
.Describe the effect that impulses from the pneumotaxic and apneustic centers in the pons have on the medullary centers of breathing.
Describe the pathway by which a change in arterial H1 concentration independent of altered carbon dioxide influences ventilation. What is the adaptive value of this reflex?
Dicuss the Neural control of breathing in animal
Air is inhaled when the______ and the rib muscles contract, making the chest cavity______ . In contrast, exhalation is a(n)_______ process, caused by allowing these muscles to_______ . Breathing is driven by neurons of________ the located in the_______of the brain. The respiratory rate is increased when receptors detect an excess of______ in the blood.
Which of the following combinations would all result in an increase in stimulation to breathe? Group of answer choices decrease in PCO2 : increase in H+ : decrease in PO2 increase in PCO2 : increase in H+ : decrease in PO2 decrease in PCO2 : decrease in H+ : decrease in PO2 increase in PCO2 : decrease in H+ : increase in PO2 decrease in PCO2 : decrease in H+ : increase in PO2