Respiratory 1 Quiz

True ( A) or False ( B) 42. Motor input is provided from proprioceptors

FALSE

True ( A) or False ( B) 44. As the partial pressure of oxygen falls due to increased consumption, the partial pressure of carbon dioxide and the temperature decrease due to metabolic activity in muscle fibers.

FALSE

True ( A) or False ( B) 47. Some alveoli merge together and some are replaced with fibrous connective tissue.

FALSE

True ( A) or False ( B) 41. Anticipation of exercise generates neural input to the limbic system.

TRUE

True ( A) or False ( B) 43. Motor input is provided from the primary motor cortex.

TRUE

True ( A) or False ( B) 45. Carbon dioxide is added via the buffering of the hydrogen ions produced as a result of lactic acid production.

TRUE

True ( A) or False ( B) 46. Chemoreceptors sense the changes in partial pressure and notify the medullary rhythmicity center to increase the rate and depth of breathing.

TRUE

True ( A) or False ( B) 48. There is reduced compliance (reduces ability to increase thoracic volume);

TRUE

True ( A) or False ( B) 49. There is increased airway resistance (decreases tidal volume)

TRUE

True ( A) or False ( B) 50. There is decreased diffusion due to increased diffusion distance, decreased surface area,

TRUE

14. Exhalation begins when a. Inspiratory muscles relax b. Diaphragm contracts c. Blood circulation is the lowest d. Both a and b e. All of the above

a. Inspiratory muscles relax

2. Which of the following is a passageway for air, food and water? a. Pharynx b. Larynx c. Paranasal sinuses d. Trachea e. Esophagus

a. pharynx

6. This is located anterior to the esophagus and carries air to the bronchi. a. Trachea b. Larynx c. Nasopharynx d. Pharynx e. None of the above

a. trachea

12. This is direction of diffusion of gases at capillaries near systemic cells. a. Oxygen into blood , Carbon dioxide into blood b. Oxygen out of blood , Carbon dioxide into blood c. Oxygen into blood , Carbon dioxide out of blood d. Oxygen out of blood , Carbon dioxide out of blood

b. Oxygen out of blood , Carbon dioxide into blood

5. Pitch is controlled by a. Vibration of the vocal chords b. Tension of the vocal chords c. Layers of cartilage in the vocal chords d. Arrangement of the vocal chords e. None of the above

b. Tension of the vocal chords

11. These are cells of the alveoli that produce surfactant. a. Type I alveolar cells b. Type II alveolar cells c. Type III alveolar cells d. Surface cells e. Macrophages

b. Type II alveolar cells

4. These are triangular pieces of mostly hyaline cartilage located at the posterior and superior border of the cricoid cartilage. a. Corniculate cartilage b. Arytenoids cartilage c. Cricotracheal cartilage d. Cuneiform cartilage e. Laryngeal cartilage

b. arytenoids cartilage

9. Which of the below tissues provides the functions of the inner layer of the conducting organs? a. stratified squamous epithelium with keratin b. ciliated pseudostratified columnar epithelium with goblet cells c. cilated cuboidal epithelium with goblet cells d. transitional epithelium with cilia e. columnar connective tissue with goblet cells

b. ciliated pseudostratified columnar epithelium with goblet cells

3. This structure prevents food or water from entering the trachea. a. Arytenoid cartilage b. Epiglottis c. Nasopharynx d. Thyroid cartilage e. Paranasal sinus

b. epiglottis

38. Which of the following are responsible of the constriction of airways during an exercise induced asthma attack? a. Surfactant b. Histamine c. Leukotrienes d. Antibodies e. Mucous

c. Leukotrienes

13. This is direction of diffusion of gases at the alveoli of the lungs. a. Oxygen into blood , Carbon dioxide into blood b. Oxygen out of blood , Carbon dioxide into blood c. Oxygen into blood , Carbon dioxide out of blood d. Oxygen out of blood , Carbon dioxide out of blood

c. Oxygen into blood , Carbon dioxide out of blood

8. Which of the below tissues maintains open airways in the lower respiratory system? a. stratified squamous epithelium with keratin b. ciliated pseudostratified columnar epithelium with goblet cells c. hyaline cartilage d. mucus membrane e. bone

c. hyaline cartilage

10. Which of the below tissues forms the exchange surfaces of the alveolus? a. stratified squamous epithelium b. ciliated pseudostratified columnar epithelium with goblet cells c. simple squamous epithelium d. hyaline cartilage e. columnar connective tissue with goblet cells

c. simple squamous epithelium

7. This is the primary gas exchange site. a. Trachea b. Bronchiole c. Nasal sinuses d. Alveolus e. Bronchus

d. Alveolus

17. Which is the dominant method of carbon dioxide transport? a. Bound to hemoglobin b. Bound to oxygen c. Dissolved in plasma as a gas d. Dissolved in plasma as bicarbonate ions e. Diffusion

d. Dissolved in plasma as bicarbonate ions

39. Epinephrine is one of the treatment used for respiratory signs and symptoms of anaphylaxis. What is the effect of epinephrine? a. It would clean the air b. It would constrict the airways c. It would decrease oxygen delivery to tissues d. It would dilate airways e. It would promote ischemia

d. It would dilate airways

1. Which of the following is not part of the upper respiratory system? a. Nose b. Oral cavity c. Pharynx d. Trachea e. Nasal meatuses

d. trachea

40. Cigarette smoking causes a. Constriction of terminal bronchioles b. Inhabitation of cilia movement c. Causes buildup of substances and microbes in airways d. Destroys elastic tissue which decreases compliance of lungs e. All of the above

e. All of the above

16. Which of the following is not a factor that the rate of pulmonary and systemic gas exchange depends on. a. Partial pressure difference of the gases b. Surface area for gas exchange c. Diffusion distance d. Molecular weight and solubility of the gases e. Force of contraction of diaphragm

e. Force of contraction of diaphragm

15. The conducting airways with the air that does not undergo respiratory exchange are known as the a. Inspiratory volume b. Expiratory reserve volume c. Minimal volume d. Residual volume e. Respiratory dead space

e. Respiratory dead space

18. Which is a factor that does NOT affect hemoglobin's affinity for oxygen? a. pH of blood b. Partial pressure of the oxygen c. Amount of oxygen available d. Temperature e. Respiratory rate

e. Respiratory rate