Chemoreceptors 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.
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- The peripheral chemoreceptors that respond to oxygen levels of the blood and regulate heart activity are located in Select one: a. structures near the carotids and aortic arch. b. the infundibulum of the hypothalamus. c. the left ventricle. d. the right ventricle. e. the medulla oblongata.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.Which of the following would be most likely to cause pulmonary congestion? A failure of the right ventricle B failure of the left ventricle C an incompetent tricuspid valve D stenosis of the pulmonary semilunar valve
- The duration of an inspiration is set bya. the pneumotaxic center.b. the phrenic nerves.c. the vagus nerves.d. the I neurons.e. the E neuronsWhich 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 airwaysA 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.
- 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 rateIf Mr. Smith is suffering from pulmonary hypertension. Which of the following receptors would be stimulates in an attempt by his body to maintain a normal homeostasis state? A. J receptors B. Central Chemoreceptors C. Peripheral chemoreceptors D. Stretch receptorsThe rhythm of breathing is set by neurons in:- a. the medulla oblongata. b. the pons. c. the midbrain. d. the diaphragm. e. the cerebral cortex
- Which of these statements about intrapulmonary pressure and intrapleural pressure is true?A.The intrapulmonary pressure is always subatmospheric.B.The intrapleural pressure is always greater than the intrapulmonary pressure.C.The intrapulmonary pressure is greater than the intrapleural pressure.D.The intrapleural pressure equals the atmospheric pressure.Ventilation 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 alveiolarWhich 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
