Connect Ch. 23 Flashcards
Which of the following is not a function of the respiratory system?
It controls the pH of body fluids.
It promotes the flow of lymph and venous blood.
It helps regulate blood pressure.
It assists in the synthesis of vasodilators.
It helps with defecation.
It assists in the synthesis of vasodilators.
The respiratory system plays a role in acid-base balance because __________.
elimination of carbon dioxide results in decreased acid in the body
oxygen can function as a buffer
olfaction results in the avoidance of acidic substances in the environment
elimination of carbon dioxide results in decreased acid in the body
Which of the following is part of the respiratory zone of the respiratory system?
Nasal cavity
Larynx
Alveoli
Lobar bronchi
Alveoli
Which of the following regions of the lung(s) would be affected if the right superior lobar bronchus was obstructed?
The superior lobe of the right lung only
The right and left superior lobes
All right lobes
All lobes of both lungs
The superior lobe of the left lung only
The superior lobe of the right lung only
The lobar bronchus in each lung branches into ___________ bronchi that ventilate a functionally independent region of the lung tissue.
segmental
pulmonary
respiratory
inferior
segmental
In which part of the brain would you suspect an injury if a person’s respiratory rate did not respond appropriately to changes in activity level?
Cerebrum
Medulla oblongata
Thalamus
Midbrain
Pons
Pons
The main pacemaker of the breathing rhythm is the __________ respiratory group in the medulla oblongata.
ventral
The respiratory centers receive input from __________. Check all that apply.
the cerebral cortex
stretch receptors in airway passages
chemoreceptors in the brainstem
baroreceptors in the carotid sinus
the cerebral cortex
stretch receptors in airway passages
chemoreceptors in the brainstem
Breathing can be voluntarily controlled, as evidenced by input to the respiratory centers from __________.
peripheral chemoreceptors
central chemoreceptors
irritant receptors
the cerebrum
the cerebrum
Why do respiratory volumes tend to decrease with an aging respiratory system?
The thoracic cage increases in flexibility.
The costal cartilages increase in flexibility.
There is less elastic tissue in the lungs.
There is an increased number of alveoli.
There is less elastic tissue in the lungs.
Which of the following lung diseases is marked by a reduced number of cilia, reduced motility of the remaining cilia, goblet cell hypertrophy and hypersecretion, and thick sputum?
Asthma
Oat-cell carcinoma
Atelectasis
Chronic bronchitis
Emphysema
Chronic bronchitis
Which of the following would lead to anemic hypoxia?
Sickle-cell disease
Emphysema
Squamous-cell carcinoma
Asthma
Atelectasis
Sickle-cell disease
Which of the following lung diseases would put undue strain on the intercostal muscles, causing fatigue from constant active exhalation?
Cor pulmonale
Pulmonary hemosiderosis
Emphysema
Atelectasis
Collapsed lung
Emphysema
