Chapter 22: Respiratory System

41 Questions | Total Attempts: 9489

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Chapter 22: Respiratory System

Breathe In, Breathe Out


Questions and Answers
  • 1. 
     This structure is called the windpipe and is supported by rings of cartilage.
    • A. 

      Bronchus

    • B. 

      Alveolus

    • C. 

      Pharynx

    • D. 

      Trachea

  • 2. 
    These respiratory tuves are primarily composed of smooth muscle and determine the flow of air to the alveoli.
    • A. 

      Trachea

    • B. 

      Bronchi

    • C. 

      Bronchioles

    • D. 

      Nares

  • 3. 
    The trachea branches into the right and left
    • A. 

      Alveoli

    • B. 

      Bronchi

    • C. 

      Nares

    • D. 

      Pulmonary arteries

  • 4. 
    The lungs are located within the
    • A. 

      Mediastinum

    • B. 

      Dorsal cavity

    • C. 

      Spinal cavity

    • D. 

      Thoracic cavity

  • 5. 
    Oxygen diffuses from the alveoli into the
    • A. 

      Bronchioles

    • B. 

      Trachea

    • C. 

      Pulmonary capillaries

    • D. 

      Eustachian tube

  • 6. 
    This nerve innervates the diaphragm.
    • A. 

      Intercostal nerve

    • B. 

      Sciatic

    • C. 

      Phrenic

    • D. 

      Cranial nerve XI

  • 7. 
    The diaphragm
    • A. 

      Is smooth muscle that forms the bronchioles

    • B. 

      Is skeletal muscle

    • C. 

      Contracts in response to the firing of the vagus nerve

    • D. 

      Forms the outer lining of the lungs

  • 8. 
    The pleural membranes
    • A. 

      Line the respiratory passages

    • B. 

      Form the bronchioles

    • C. 

      Are serous membranes

    • D. 

      Are confined to the mediastinum

  • 9. 
      The respiratory passages are lined with
    • A. 

      Pleura

    • B. 

      Mucous membrane

    • C. 

      Serous membrane

    • D. 

      Muscle

  • 10. 
      Most oxygen is transported through the blood
    • A. 

      Attached to hemoglobin.

    • B. 

      As bicarbonate.

    • C. 

      As surfactant.

    • D. 

      As lysozyme.

  • 11. 
       Which of the following is the dome-shaped muscle that is the chief muscle of inhalation?
    • A. 

  • 12. 
      Bronchiolar constriction is most likely to cause
    • A. 

      Pneumothorax.

    • B. 

      Pulmonary edema.

    • C. 

      Wheezing.

    • D. 

      Laryngitis.

  • 13. 
      Surfactants are found within the
    • A. 

      Pulmonary capillaries.

    • B. 

      Trachea.

    • C. 

      Alveoli.

    • D. 

      Intrapleural space.

  • 14. 
       Which of the following regulates respiratory activity?
    • A. 

      PO2

    • B. 

      PCO2

    • C. 

      Bicarbonate

    • D. 

      Albumin

  • 15. 
      Which of the following structures controls respirations?
    • A. 

      Medulla oblongata

    • B. 

      Basal ganglia

    • C. 

      Postcentral gyrus

    • D. 

      Limbic system

  • 16. 
      As plasma PCO2 increases,
    • A. 

      Hemoglobin synthesis increases.

    • B. 

      Ventilation increases.

    • C. 

      Vital capacity increases.

    • D. 

      Respirations cease.

  • 17. 
      These respiratory muscles are located between the ribs.
    • A. 

      Diaphragm

    • B. 

      Bronchiolar smooth muscle

    • C. 

      Intercostals

    • D. 

      Sternocleidomastoids

  • 18. 
      Contraction of the diaphragm and the intercostal muscles
    • A. 

      Stimulates the phrenic and intercostal nerves.

    • B. 

      Decreases thoracic volume.

    • C. 

      Causes air to move out of the lungs.

    • D. 

      Is responsible for inhalation.

  • 19. 
      Stimula  Stimulation of the phrenic and intercostal nerves causes the release of this neurotransmitter into the neuromuscular junction.
    • A. 

      Adrenaline

    • B. 

      Norepinephrine

    • C. 

      Acetylcholine

    • D. 

      Myosin

  • 20. 
      Dyspnea means
    • A. 

      “puffed up” alveoli.

    • B. 

      Pneumonia.

    • C. 

      Cyanosis.

    • D. 

      Difficulty breathing.

  • 21. 
      The Adam’s apple is
    • A. 

      Cartilage.

    • B. 

      The epiglottis.

    • C. 

      The primary site of gas exchange.

    • D. 

      The pharynx.

  • 22. 
      Frontal, maxillary, sphenoidal, and ethmoidal
    • A. 

      Refer to the bones of the thorax.

    • B. 

      Are saliva-secreting glands.

    • C. 

      Are paranasal sinuses.

    • D. 

      Are lined with serous membrane.

  • 23. 
      When the diaphragm and the intercostal muscles relax,
    • A. 

      Air moves out of the lungs.

    • B. 

      Inhalation occurs.

    • C. 

      Ventilation ceases.

    • D. 

      Chest volume increases.

  • 24. 
      Which    Which of the following best describes eupnea?
    • A. 

      Kussmaul respirations

    • B. 

      Vital capacity

    • C. 

      Normal, quiet breathing

    • D. 

      Hypoxemia

  • 25. 
       Intra-alveolar surface tension is due to
    • A. 

      Acid.

    • B. 

      Mucus.

    • C. 

      Water.

    • D. 

      Bicarbonate.