CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+
Trachea - ANSWERS-AKA Windpipe, is the conduit for air
entry into the lungs. Approx 10-12 cm long, & consists of C-
Shaped Cartilaginous rings. Begins immediately below the
cricoid cartilage. Divides into the right and left mainstem
bronchi at the level of the Carina.
Mediastinum - ANSWERS-The space between the lungs that
contains, in addition to the trachea, the heart, great vessels,
and a portion of the esophagus. Main thing to know- the
heart is housed there.
Carina - ANSWERS-Where the right and left mainstem
bronchi branch off.
,Goblet Cells - ANSWERS-Mucous producing cells, that are
lined in the trachea and bronchi. They trap small particles
and other potential contaminants.
Beta-2 Adrenergic Receptors - ANSWERS-Stimulate
bronchodilation.
# of Lobes in each Lung - ANSWERS-Right lung- 3, Left lung-
2.
Visceral pleura - ANSWERS-Thin, slippery, outer membrane
covering the lungs.
Parietal Pluera - ANSWERS-Lines the inside of the thoracic
cavity.
Bronchioles - ANSWERS-Made of smooth muscle & lined
with beta-2 receptors, which can dilate and constrict based
on stimuli.
Alveoli - ANSWERS-Balloon-like clusters of single-layer air
sacs, and serve as the functional site for the exchange of
, oxygen and CO2. This exchange occurs by simple diffusion
over the pulmonary capillaries.
Ventilation - ANSWERS-Process of moving air in and out of
the lungs. Consist of two phases- inhalation and exhalation.
Oxygenation - ANSWERS-Process of loading O2 molecules
onto hemoglobin molecules in the bloodstream.
Respiration - ANSWERS-Actual exchange of O2 and CO2 in
the alveoli and the tissues of the body.
Inhalation - ANSWERS-Air enters the body, the diaphragm
and intercostal muscles contract. When the diaphragm
contracts, it descends and enlarges the thoracic cage from
top to bottom. When the intercostal muscles contract, they
lift the ribs up and out.
Diaphragm - ANSWERS-Stimulated by the Phrenic Nerve, it
is a voluntary and involuntary muscle.