Chapter 10
Which of the following is true regarding the effect of smoking on the respiratory system? a. Smoking destroys cilia lining the respiratory tract. b. "Smoker's cough": results from the heavy coughing that is necessary to clear accumulated mucus and particles from the airway. c. The production of mucus increases in response to the presence of smoke. d. Particles and debris from the smoke accumulate in the mucus of the airway and increase risk for infections by pathogens.
All of these
Which of the following is NOT a symptom of asthma? a. choking b. coughing while exercising c. tightness in the chest d. wheezing e. shortness of breath
a. choking
Ventilation refers to the process by which
air moves into and out of the lungs.
During puberty, the increased production of testosterone in males causes the rapid enlargement of which of the following structures in the respiratory system? a. bronchioles b. larynx c. bronchi d. esophagus e. pharynx
b. larynx
Most of the carbon dioxide released by cells is transported in the veins in what form?
bicarbonate
Arrange the following entries in the order in which air contacts them as air is drawn into the body. a. trachea b. bronchiole c. pharynx d. alveoli e. larynx
c, e, a, b, d
Physicians recommend that people breathe through their noses instead of their mouths. Which of the following occurs as air is drawn through the nose? a. Carbon dioxide is removed from the air. b. Air is warmed. c. Air is warmed and filtered. d. Air is dried. e. Air is filtered.
c. Air is warmed and filtered
Which of the following is NOT true of mucus produced in the nasal cavity? a. Mucus traps dust and pathogens, removing them from the air entering the lungs. b. Mucus is moved toward the back of the nasal cavity by the cilia of the epithelial cells lining the nasal passageways. c. Mucus is produced by cells located in the cartilage forming the septum (center cartilage region) of the nose. d. If mucus is swallowed into the digestive tract, it is broken down by digestive enzymes. e. When the nostrils are exposed to low temperatures, mucus collects in the nasal passageways and sometimes drips from the nostrils.
c. Mucus is produced by cells located in the cartilage forming the septum (center cartilage region) of the nose.
Which of the following results from the stimulation by nerve impulses generated in the brain when they arrive at the main muscle involved in inspiration? a. downward movement of the ribs b. reduction in the efficiency of oxygen transport by the blood c. contraction of the diaphragm d. opening of the trachea e. increase in air pressure in the lungs
c. contraction of the diaphragm
Which of the following is NOT a symptom of botulism? a. vomiting b. paralysis of muscles used for breathing c. double vision d. rash e. difficulty swallowing
d. rash
Air in the airways that does not participate in gas exchange is known as
dead space volume.
The process of breathing requires the coordinated efforts of the _________. a. circulatory system. b. bones. c. respiratory system. d. muscles.
e. all of these
A small amount of fluid is contained in the pleural cavity to
function as a lubricant as the lungs move during ventilation to reduce friction.
During exhalation, the pressure inside the lungs
initially is higher than atmospheric pressure outside the body, but drops as air leaves the body.
When air leaves the pharynx, it next enters the
larynx
As air moves through the nasal cavity, it is humidified by
mucus secreted by the epithelial mucosa.
During inspiration, intercostal muscles function to
pull the rib cage up and out, so that lung volume increases.
During a cough, what is responsible for constricting the size of the trachea?
smooth muscle contractions
A little girl was playing in the snow one day and found that she was wiping her nose quite often. The "runny nose" that she was experiencing due to the cold temperatures resulted from
the slowed activity of nasal cilia
Oxygen rich blood flows through the heart
via the left atrium and ventricle before leaving on the systemic circuit.
