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TLS Online TPP Program

#Question id: 16123

How fever can be reduced by aspirin?

#Unit 7. System Physiology – Animal
  1. Aspirin inhibits the cyclooxygenase enzyme, necessary for the synthesis of prostaglandins. By inhibiting the production of prostaglandins, aspirin interrupts the pathway that pyrogens utilize to decrease the set-point temperature.
  2. Aspirin activates the cyclooxygenase enzyme, necessary for the synthesis of prostaglandins. By inhibiting the production of prostaglandins, aspirin interrupts the pathway that pyrogens utilize to raise the set-point temperature.
  3. Aspirin inhibits the cyclooxygenase enzyme, necessary for the synthesis of prostaglandins. By inhibiting the production of prostaglandins, aspirin interrupts the pathway that pyrogens utilize to raise the set-point temperature.
  4. Aspirin inhibits the cyclooxygenase enzyme, necessary for the synthesis of prostaglandins. By stimulating the production of prostaglandins, aspirin interrupts the pathway that pyrogens utilize to raise the set-point temperature.
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TLS Online TPP Program

#Question id: 11072

#Unit 7. System Physiology – Animal

The following diagram shows pulmonary airway resistance expressed as a function of pulmonary volume. Which relationship best describes the normal lung?
TLS Online TPP Program

#Question id: 11073

#Unit 7. System Physiology – Animal

The respiratory passageways have smooth muscle in their walls. Which of the following best describes the effect of acetylcholine and epinephrine on the respiratory passageways?
TLS Online TPP Program

#Question id: 11074

#Unit 7. System Physiology – Animal

A 30-year-old woman performs a valsalva maneuver about 30 min after eating lunch. Which of the following best describes the changes in pulmonary and systemic blood volumes that occur in this woman?
TLS Online TPP Program

#Question id: 11075

#Unit 7. System Physiology – Animal

A 65-year-old man with emphysema due to 34 years of cigarette smoking is admitted to hospital due to dyspnea. With further tests the mean pulmonary arterial pressure is determined to be 45 mm Hg at rest. He is hypoxic (PO2 = 49 mm Hg), hypercapnic (85 mm Hg), and slightly acidotic. The cardiovascular and oxygen changes are due to which of the following?
TLS Online TPP Program

#Question id: 11076

#Unit 7. System Physiology – Animal

Which of the following will decrease pulmonary blood flow resistance?
TLS Online TPP Program

#Question id: 11077

#Unit 7. System Physiology – Animal

A person’s normal tidal volume is 400 ml with a dead space of 100 ml. The respiratory rate is 12 breaths/min. The person is placed on ventilator for surgery and the tidal volume is 700 with a rate of 12. What is the approximate alveolar Pco2 for this person?