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During exercise, which of these statements is true?
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Human Physiology
- Which of the following occur(s) during hypoxemia?A. Increased ventilationB. Increased production of 2.3-DPG C. Increased production of erythropoietinD. All of the choicesarrow_forwardThe volume of oxygen transported in soluble form by 1000 ml of arterial blood plasma if pO2 = 100 mm Hg will be: A. 10 ml B. 20 ml C. 30 ml D. 40 ml E. 50 mlarrow_forwardAs an individual ages, the A. Residual volume decreases B. Expiratory reserve volume increases C. Functional residual capacity decreases D. Vital capacity decreasesarrow_forward
- During exercise, venous return is enhanced by: A. the operation of carotid arterial and femoral arterial valves. B. the operation of the respiratory muscle/ventilation pump. C. skeletal muscle pump operation D. Answers B and C are correct.arrow_forwardAs lung compliance decreases, the plasma HCO3 in cells moving from the lungs to the heart will: a. increase b. decrease c. stay the samearrow_forwarda. Why is a minimum flow rate of 5 Lpm recommended for oxygen delivery by mask? b. Why will an air entrainment mask never deliver 100% oxygen? c. Briefly explain why the trans-tracheal catheter requires less oxygen flow than the nasal cannula to achieve a given arterial partial pressure of oxygen. d. Explain the difference between a high-flow and a low-flow oxygen delivery system. Give an example of each.arrow_forward
- Which of the following is a late sign of hypoxemia? a. Tachycardia b. Stupor c. Tachypnea d. Restlessnessarrow_forwardPeripheral 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 alonearrow_forwardWhich 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 answerarrow_forward
- While a runner rests before a race, the hemoglobin in the blood returning to her heart is 75% saturated with O2 (that is, the blood is carrying about 75% of the maximum possible capacity to carry O2). While she is running, this percentage ... A. decreases because the partial pressure of O2 in her lung alveoli is reduced to below 40 mm Hg. B. decreases because the decreased PO2 in her muscles promotes O2 unloading in those tissues. C. stays the same because hemoglobin is usually 75% saturated with O2. D. increases because her muscles need more O2. E. increases because she is breathing harder.arrow_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_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_forward
- Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:CengageHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning