Questions 1-5
the exchange of air between the atmosphere and the alveoli of the lungs is called…
pulmonary ventilation
The part of the respiratory tract that contains the vocal folds is the…
larynx
compliance
Respiratory gases move across membranes from higher concentration to lower concentration. This simple physical process is called…
diffusion
The nerve that stimulates the diaphragm is the _____ nerve.
phrenic
The movement of gases between the alveoli and the blood is called the ______ exchange of gases
external
The leaf-shaped cartilage that covers the larynx during swallowing is the…
epiglottis
The substance in the alveoli that counteract the surface tension of the fluids is…
surfactant
The gas that moves from the alveoli into the blood in external exchange is…
oxygen
A rise in the blood level of carbon dioxide is called…
hypercapnia
The space and organs between the lungs comprise the…
mediastinum
A small subdivision of a bronchus is a…
bronchiole
The active phase of normal, relaxed breathing is…
inhalation/inspiration
The gas that moves from the tissues into the blood in internal exchange is..
carbon dioxide
Ms. L is breathing rapidly during a road race. This altered breathing pattern is called…
tachypnea
The membrane around the lung is the…
pleura
The dome-shaped muscle that contracts during inhalation is the…
diaphragm
The volume of air that remains in the lungs after maximum exhalation is the…
residual volume
The iron-containing protein that carries oxygen in the blood is…
hemoglobin
A temporary cessation of breathing is termed…
apnea
The small air sacs in the lungs through which gases are exchanged are the…
alveoli
As the thoracic cavity increases in size during inhalation, gas pressure within the thorax…
decreases
The amount of air that is moved into or out of the lungs in quiet relaxed respiration is the _____ volume.
tidal
The enzyme involved in the conversion of carbon dioxide into bicarbonate and hydrogen ions is called…
carbon anhydrase
A decrease in the rate of breathing is termed…
hypopnea