anat/phys

Card Set Information

Author:
mustangtyra
ID:
28057
Filename:
anat/phys
Updated:
2010-07-26 17:34:23
Tags:
Anatomy Physiology
Folders:

Description:
Chapter 22 Respiratory System
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user mustangtyra on FreezingBlue Flashcards. What would you like to do?


  1. Secrete a fluid containing surfactant
    Type II cells
  2. Where the respiratory zone of the lungs begins
    Respiratory bronchioles
  3. Composed of simple squamous epithelium
    Type I cells
  4. Terminates in alveoli
    Aveolar duct
  5. Composed of cuboidal cells
    Type II cells
  6. The respiratory membrane is composed of fused membrane of the capillary walls and...
    Type I cells
  7. No exchange of gases occurs here
    Segmental bronchi
  8. Ventilation perfusion coupling means that more blood flows past functional alveoli than past nonfunctional alveoli?
    True
  9. The olfactory mucosal lining of the nasal cavity contains the receptors for the sense of smell?
    True
  10. The functions of the nasal conchae are to enhance the air turbulance in the cavity and to increase the mucosal surface area exposed to the air?
    True
  11. The lungs are perfused by two circulations: the pulmonary and the bronchial. The pulmonary circulation is for oxygenation of blood. The bronchial circulation supplies blood to the lung tissue?
    True
  12. Changes in arterial pH can modify respiration rate and rythm even when carbon dioxide and oxygen levels are normal?
    True
  13. Intralpleural pressure is normally about 4mm Hg less than the pressure in the alveoli?
    True
  14. During normal quiet breathing, aproximately 750ml of air moves into and out of the lungs with each breath?
    False
  15. The alveolar ventilation rate is the best index of effective ventilation?
    True
  16. In chronic bronchitis, mucus production is decreased and this leads to the inflammation and fibrosis of the mucosal lining of the bronchial tree?
    False
  17. Labored breathing is termed dispenea?
    True
  18. The largest amount of carbon dioxide is transported in the bloodstream in the form of carbonic anhydrase?
    False
  19. Increased temperature results in decreased O2 unloading from hemoglobin?
    False
  20. The epiglottis is a smooth muscle that covers the glottis during swallowing?
    False
  21. Valsalva's maneuver involves closing off the glottis (preventing expiration) while contracting the muscles of expiration, causing an increase in intra-abdominal pressure?
    True
  22. Smoking diminishes ciliary action and eventually destroys the cilia?
    True
  23. Tracheal obstruction is life threatening?
    True
  24. The parietal pleura lines the thoracic wall?
    True
  25. The average individual has 500ml of residual volume in his lungs?
    False
  26. Atelectasis (lung collapse) renders the lung useless for ventilation?
    True
  27. The hering-breuer reflex is a potentially dangerous response that may cause overinflation of the lung?
    False
  28. Strong emotions and pain acting through the limbic system activate sympathetic centers in the hypothalmus, thus modulating respiratory rate and depth by sending signals to the respiratory centers?
    True
  29. As carbon dioxide enters systemic blood, it causes more oxygen to dissociate from hemoglobin (the haldane effect), which in turn allows more CO2 to combine with hemoglobin and more biocarbonate ion to be generated (the Bohr effect)?
    False
  30. Dalton's law states that the total pressure exerted by a mixture of gases in the sum of the pressures exerted independently by each gas in the mixture?
    True
  31. Oxygenated hemoglobin releases oxygen more readily when the pH is more basic?
    False
  32. Nasal cochae mainly work on inhalation to warm and moisten air. They serve minor functions for exhalation?
    False
  33. Under certain conditions, the vocal folds act as a sphincter that prevents air passage?
    True
  34. Apneustic breathing is characterized by prolonged inspirations?
    True
  35. Which of the choices below is NOT a functional process performed by the respiratory system?
    A) pulmonary ventilation
    B) external respiration
    C) pulmonary respiration
    D) transport of respiratory gases
    D) Transport of respiratory gases
    (this multiple choice question has been scrambled)
  36. The loudness of a person's voice depends on the...
    A) Thickness of vestibular folds
    B) Lenght of the vocal cords
    C) Strength of the intrinsic laryngeal muscles
    D) Force with which the air rushes across the vocal folds
    D) Force with which air rushes across the vocal folds
    (this multiple choice question has been scrambled)
  37. The walls of the aveoli are composed of two types of cells, type I and type II. The function of type II is to...
    A) Protect the lungs from bacterial invasion
    B)Replace mucus in the alveoli
    C) Secrete surfactant
    D)Trap dust and other debris
    C) Secrete surfactant
    (this multiple choice question has been scrambled)
  38. Complete the following statement using the choices below. Air moves out of the lungs when the pressure inside the lungs is...
    A) Less than the pressure in the atmosphere
    B) Greater than the pressure in the atmosphere
    C) Equal to the pressure in the atmosphere
    D) Greater than the intra-alveolar pressure
    B) Greater than the pressure in the atmosphere
    (this multiple choice question has been scrambled)
  39. Unlike inspiration, expiration is a passive act because no muscular contractions are involved. Expiration, however, depends on two factors. Which of the choices below lists those two factors?
    A) The negative feedback of expansion fibers used during inspiration and the outward pull of surface tension due to surfactant
    B) The recoil of elastic fibers that were stretched during inspiration and the inward pull of surface tension due to the film of alveolar fluid
    C) The expansion of respiratory muscles that were contracted during inspiration and the lack of surface tesion on the alveolar wall
    D) Combined aount of CO2 in the blood and air in the alveoli
    B) The recoil of elastic fibers that were stretched during inspiration and the inward pull of surface tension due to the film of alveolar fluid
    (this multiple choice question has been scrambled)
  40. which of the following maintains the patency (openness) of the trachea?
    A) surfactant
    B) pseudostratified ciliated epithelium
    C) surface tension of water
    D) cartilage rings
    D) cartilage rings
    (this multiple choice question has been scrambled)
  41. Intrapulmonary pressure is the...
    A) negative pressure in the intrapleural space
    B) pressure within the pleural cavity
    C) pressure within the alveoli of the lungs
    D) differance between atmospheric pressure and respiratory pressure
    C) pressure within the alveoli of the lungs
    (this multiple choice question has been scrambled)
  42. The relationship between the pressure and volume of gases is given by
    A) Dalton's law
    B) Charles' law
    C) Boyle's law
    D) Henry's law
    C) Boyle's law
    (this multiple choice question has been scrambled)
  43. The statement "in a mixture of gases, the total pressureis the sum of the individual partial pressures of gases in the mixture" paraphrases...
    A) Boyle's law
    B)Henry's law
    C) Charles' law
    D) Dalton's law
    D) Dalton's law
    (this multiple choice question has been scrambled)
  44. Surfactant helps to prevent the alveoli from collapsing by...
    A) humidifying
    B) interfering with the cohesiveness of water molecules, thereby reducing the surface tension of the alveolar fluid
    C) warming the air before it enters
    D) protecting the surface of alveoli from dehydration and other enviromental variations
    B) interfering with the cohesiveness of water molecules, thereby reducing the surface tension of the alveolar fluidinterfering with the cohesiveness of water molecules, thereby reducing the surface tension of the alveolar fluid
    (this multiple choice question has been scrambled)
  45. For gas exchanges to be efficent, the respiratory membrane must be...
    A) the thickness of the respiratory membrane is not important in the efficiency of gas exchange
    B) 0.5 to 1 micrometer thick
    C) at least three micrometers thick
    D) between 5and 6 micrometers thick
    B) 0.5 to 1 micrometer thick
    (this multiple choice question has been scrambled)
  46. with the Bohr effect, more oxygen is released because a(n)...
    A) decrease in pH (acidosis) weakens the hemoglobin-oxygen bond
    B) decrease in pH (acidosis) strengthens the hemoglobin-oxygen bond
    C) increase in pH (alkalosis) strengthens the hemoglobin-oxygen bond
    D) increase in pH (alkalosis) weakens the hemoglobin-oxygen bond
    A) decrease in pH (acidosis) weakens the hemoglobin-oxygen bond
    (this multiple choice question has been scrambled)
  47. The most powerful respiratory stimulus for breathing in a healthy person is ...
    A)loss of oxyge in tissues
    B) pH (acidosis)
    C) increase of carbon dioxide
    D) pH (alkalosis)
    C) increase of carbon dioxide
    (this multiple choice question has been scrambled)
  48. Nerve impulses from will result in inspiration.
    A) the preoptic nucleus of the hypothalamus
    B) Brocca's center
    C) the ventral respiratory group
    D) the chemoreceptor group
    C) the ventral respiratory group
    (this multiple choice question has been scrambled)
  49. In the plasma, the quantity of of oxygen in solution is...
    A) not present except where it is combined with carrier molecules
    B) about equal to the oxygen combined with hemoglobin
    C) greater than the oxygen combined with hemoglobin
    D) only about 1.5% of the oxygen carried in dissolved form
    D) only about 1.5% of the oxygen carried in dissolved form
    (this multiple choice question has been scrambled)
  50. which of the following statements is in correct?
    A) the chest wall becomes more rigid with age
    B) respiratory rate is lowest in newborn infants
    C) descent of the diaphragm results in abdominal breathing
    D) During fetal life, the lungs are filled with fluid
    B) respiratory rate is lowest in newborn infants
    (this multiple choice question has been scrambled)
  51. Which of the choices below describes the forces that act to pull the lungs away from the thorax wall ant thus collapse the lungs?
    A) the natural tnedency for the lungs to recoil and transpulmonary pressures
    B) compliance and the surface tension of the alveolar fluid
    C) the natural tendency for the lungs to rrecoil and the surface tension of the alveolar fluid
    D) compliance and transpulmonary pressure
    C) the natural tendency for the lungs to rrecoil and the surface tension of the alveolar fluid
    (this multiple choice question has been scrambled)
  52. which of the following does not influence the increase in ventilation that occurs as exercise is initiated?
    A) proprioceptors
    B) simultaneous cortical motor activation of the skeletal muscles and respiratory center
    C) decrese in lactic acid levels
    D) psychic stimuli
    C) decrese in lactic acid levels
    (this multiple choice question has been scrambled)
  53. which of the following is not a from of lung cancer?
    A)Kaposi's sarcoma
    B) squamous cell carcinoma
    C) adenocarcinoma
    D) small cell carcinoma
    A)Kaposi's sarcoma
    (this multiple choice question has been scrambled)
  54. Which of the following is not an event necessary to supply the body with O2 and dispose of CO2?
    A) internal respiration
    B) pulmonary ventilation
    C) external respiration
    D) blood pH adjustment
    D) blood pH adjustment
    (this multiple choice question has been scrambled)
  55. Which of the following is not true of the respiratory tract from the medium bronchi to the aalveoli?
    A) proportionally, smooth muscle decreases uniformly
    B) resistance to air flow increases due to the increase in cross-sectional diameter
    C) lining of the tubes changes from ciliated columnar to simple squamous epithelium in the alveoli
    D) cartilage gradually decreases and disappears at the bronchiole
    B) resistance to air flow increases due to the increase in cross-sectional diameter
    (this multiple choice question has been scrambled)
  56. which of the following determines lung compliance?
    A) airway opening
    B) alveolar surface tension
    C) muscles of inspiration
    D) flexibility of the thoracic cage
    B) alveolar surface tension
    (this multiple choice question has been scrambled)
  57. Tidal volume is air .
    A) forcibly expelled after normal expiration
    B) inhaled after normal inspiration
    C) remaining air in the lungs after forced expiration
    D) exchanged during normal breathing
    D) exchanged during normal breathing
    (this multiple choice question has been scrambled)
  58. Which of the choices below determines the direction of respiratory gas movement?
    A) the temperature
    B) partial pressure gradient
    C) solubility in water
    D) molecular weight and size of the gas molecule
    B) partial pressure gradient
    (this multiple choice question has been scrambled)
  59. possible causes of hypoxia include .
    A) obstruction of the esophagus
    B) getting very cold
    C) too little oxygen in the air
    D) taking several rapid deep breaths
    C) too little oxygen in the air
    (this multiple choice question has been scrambled)
  60. The lung volume that represents the total volume of exchangable air is the .
    A) expiratory reserve volume
    B) vital capacity
    C) inspiratory capacity
    D) tidal volume
    B) vital capacity
    (this multiple choice question has been scrambled)
  61. Because the lungs are filled with fluid during fetal life, which of the folowing statements is true regarding respiratory exchange?
    A) respiraatory exchanges are made through the ductus arteriosis
    B) respiratory exchanges are not necessary
    C) respiratory exchanges are made through the placenta
    D) because the lungs develop later in gestation, fetuses do not need a mechanism for respiratory exchange
    C) respiratory exchanges are made through the placenta
    (this multiple choice question has been scrambled)
  62. Which of the following is not a stimulus for breathing?
    A) rising blood pressure
    B) arterial pH resulting from CO2 retention
    C) rising carbon dioxide levels
    D) arterial Po2 below 60 mm Hg
    A) rising blood pressure
    (this multiple choice question has been scrambled)
  63. Respiratory control centers are located in the .
    A) medulla and pons
    B)pons and midbrain
    C) Midbrain and medulla
    D) upper spinal cord and medulla
    A) medulla and pons
    (this multiple choice question has been scrambled)
  64. The amount of reserve that can be inspired above the tidal volume is called .
    A) reserve air
    B) expiratory reserve
    C) inspiratory reserve
    D) vital capacity
    C) inspiratory reserve
    (this multiple choice question has been scrambled)
  65. Which statement about CO2 is incorrect?
    A) Its accumulation in the blood is associated with a decrease in pH
    B) More CO2 dissolves in the blood plasma than is carried in the RBC's
    C) CO2 concentrations are greater in venous blood than arterail blood
    D) Its concentration in the blood is decreased by hyperventilation
    B) More CO2 dissolves in the blood plasma than is carried in the RBC's
    (this multiple choice question has been scrambled)
  66. Oxygen and carbon dioxide are exchanged in the lungs and through all cell membranes by .
    A) filtration
    B) active transport
    C) diffusion
    D) osmosis
    C) diffusion
    (this multiple choice question has been scrambled)

What would you like to do?

Home > Flashcards > Print Preview