chapter 22 Flashcards
Which of the following is NOT involved in respiration?
external ventilation
The respiratory zone is composed of the trachea and the paranasal sinuses.
False
Which of the following are the hairs within the nasal cavity that filter coarse particles, such as pollen and dust, from inspired air?
vibrissae
_________ is the inflammation of the nasal mucosa accompanied by excessive mucus production, nasal congestion, and postnasal drip.
Rhinitis
Which of the following lists the regions of the pharynx from superior to inferior?
nasopharynx, oropharynx, laryngopharynx
The __________ is covered by a mucosa containing taste buds and keeps food out of the lower respiratory passages.
epiglottis
The bronchial, or respiratory, tree branches approximately 23 times within the lungs.
true
The __________ are the main site of gas exchange within the lungs.
alveoli
The two lungs differ in shape and size.
True
The __________ is the elastic connective tissue found within the lungs.
stroma
__________, or lung collapse, is a homeostatic imbalance that occurs when a bronchiole becomes plugged.
Atelectasis
Which of the following occurs during infant respiratory distress syndrome (IRDS)?
The baby is unable to keep his or her alveoli inflated between breaths because of a lack of surfactant.
Henry’s law states that the total pressure exerted by a mixture of gases is the sum of the pressures exerted independently by each gas in the mixture.
false
Henry’s law states that when a gas is in contact with a liquid, that gas will dissolve in the liquid in proportion to its partial pressure.
true
Which form of hypoxia occurs when body cells are unable to use O2 even though adequate amounts are delivered? (This type of hypoxia is usually the consequence of metabolic poisons, such as cyanide.)
histotoxic hypoxia
