How can we help?

You can also find more resources in our Help Center.

48 terms

Respiratory System

STUDY
PLAY
pulmonary ventilation
the exchange of air between the atmosphere and the alveoli
external gas exchange
the exchange of specific gases between the alveoli and the blood
internal gas exchange
the exchange of specific gases between the blood and the cells
cellular respiration
the process by which cells use oxygen and nutrients to generate energy
nares
the opening of the nose
conchac
the three projections arising from the lateral walls of each nasal cavity
larinx
the specific name for the voice box
epiglottis
the leaf-shaped structure that helps to prevent the entrance of food into the trachea
sinus
Cavity within a bone, filled with air and lined with mucous membrane.
bronchus
one of the two branches formed by division of the trachea
hilum
the notch or depression where the bronchus, blood vessels, and nerves enter the lung
pharynx
the area bellow the nasal cavities that is common to both the digestive and respiratory systems
bronchiole
a small air-conducting tube containing a smooth muscle layer but little or no cartilage
surfactant
A substance that decreases the surface tension in the alveoli, allowing the lungs to expand. The substance in the fluid lining the alveoli that prevents their collapse
exhalation
the phase of pulmoary ventilations in which air is expelled from the alveoli
inhalation
is the active phase of breathing. the phase of pulmoary ventilations in which the diaphragm contracts
pleura
serous membrane around each lung.
alveoli
the microscopic sacs of the lungs where gas exchange with the bloodstream takes place
tidal volume
The amount of air inhaled and exhaled in a normal, resting breath, typically about 500 mL.
compliance
ease with which the lungs and thorax can be expanded
vital capacity
The maximum volume of air that can be exhalated after maximum inspiration.
pariental pleura
is attached to the chest
visceral pleura
is attached to the lung surface
diffusion
the process by which oxygen moves from the blood into tissues
bicarbonate ion
Most importan buffer in human blood produced from carbon dioxide
hemoglobin
the substance that carries most of the oxygen in the blood
carbon dioxide
the gas that is more concentrated in the blood than in metabolically active tissues
hydrogen ion
an ion that renders blood more acidic
10%
the proportion of total blood carbon dioxide dissolved in plasma
75%
the proportion of total blood carbon dioxide transported in the form of bicarbonate
15%
the proportion of total blood carbon dioxide carried on plasma proteins
brainsteam
the location of the central chemeoreceptors
hipercapnia
a rise in the blood carbon dioxide concentration
aortic arch
the location of a peripheral chemoreceptors
phrenic nerve
the nerve that controls the diaphragm
hypoventilation
the breathing pattern that cause hypocapnia and resulting from respiratory obstruction
hyperventilation
the breathing pattern that cause hypercapnia
dyspnea
difficult or labored breathing
hyperpnea
an abnormal increase in the depth and rate of breathing
apnea
a temporary cessation of breathing
orthopnea
difficult breathing that is relieved by sitting upright
hypopnea
an abnormal decrease in the depth and rate of breathing
tachypnea
rapid breathing observed during exercise
external exchange of gases
carbon dioxid will diffuse out of the blood during the phase
alveoli, bronchioles, bronchi
gas exchange occurs in the
connective
which of the following terms does not apply to the cells that line the conducting passages of the respiratory tract
more hydrogen ions in the blood
an increase in blood carbon dioxide levels would result in
the residual volume
the amount of air remanding in the lungs after a normal exhalation