25. During exercise, Inspiration requires more force and extra labor is placed on the muscles of the Thorax. Which of the following statements is true regarding the mechanisms of "forced inspiration"? A. The diaphragm is able to triple the force of a normal contraction and subsequently increase thoracic volume by 50%. B. The external intercostal muscles contract and assist with the decrease in intrathoracic pressure. C. The internal intercostal muscles contract and assist with the decrease in intrathoracic pressure. D. Lung Elastic Recoil decreases (in response to circulating Epinephrine) and the load on the diaphragm is diminished.

25. During exercise, Inspiration requires more force and extra labor is placed on the muscles of the Thorax. Which of the following statements is true regarding the mechanisms of "forced inspiration"? A. The diaphragm is able to triple the force of a normal contraction and subsequently increase thoracic volume by 50%. B. The external intercostal muscles contract and assist with the decrease in intrathoracic pressure. C. The internal intercostal muscles contract and assist with the decrease in intrathoracic pressure. D. Lung Elastic Recoil decreases (in response to circulating Epinephrine) and the load on the diaphragm is diminished.

Basic Clinical Lab Competencies for Respiratory Care: An Integrated Approach

5th Edition

ISBN:9781285244662

Author:White

Publisher:White

Chapter15: Humidity And Aerosol Therapy

Section: Chapter Questions

Problem 10SEPT

See similar textbooks

Similar questions

When the diaphragm and external intercostal muscles contract, which of the following actions does NOT occur? A. Air moves into lungs B. The diaphragm moves inferiorly C. The intrapulmonary pressure decreases D. The intrapleural pressure increases.
If the transpulmonary pressure equals zero,a. a pneumothorax has probably occurred.b. the lungs cannot inflate.c. elastic recoil causes the lungs to collapse.d. all of these apply.
10. Measurements of expiratory reserve volume (ERV) taken when individuals are at rest and immediately following exercise show that expiratory reserve volume decreases following exercise ( a. Define expiratory reserve volume. b. Explain why exercise results in a decrease in expiratory reserve volume.
One technique for artificial respiration is mouth-to-mouth resuscitation. The rescuer takes a deep breath, blows air into the patient’smouth, and then lets air flow out. The process is repeated. Explain thefollowing: (1) Why do the patient’s lungs expand? (2) Why does airmove out of the patient’s lungs? (3) What effect do the Po2 and thePco2 of the rescuer’s air have on the victim?
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.
Explain the roles of the muscles involved during the inspiration and expiration phases of respiration. In which phase does the diaphragm contract?
2. Consider the mechanics of breathing during quiet breathing. Name the TWO inspiratory muscles. State the changes in the intrapleural pressure (Pip) and the lungs' volume during inhalation. How can air go into the lungs during inhalation?
Which of the following statements about intrapulmonary 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 pressureD. The intrapleural pressure equals the atmospheric pressure.
State Boyle’s Law and relate this law to the specific sequence of events (muscle contractions/relaxations and pressure/volume changes) causing inspiration and expiration.
Which of the following muscles are active during inspiration at rest? Diaphragm Internal intercostals External intercostals Both a and c None of the above What is the immediate result of the diaphragm contracting? Transpulmonary pressure decreases Alveolar volume decreases Intra-pleural volume decreases Intra-pleural volume increases Intra-pleural pressure increases
Describe how Boyle's law results in inspiration and expiration. Your response must include the following terms: diaphragm, intercostal muscles, volume, pressure, increase, decrease, movement of air in, movement of air out, contraction, relaxation.
Explain the mechanisms involved in quiet inspiration and in forced inspiration, and in quiet expiration and forced expiration. What muscles are involved in each case?