Bio 253 Exam 3 hondros Latest Update 2024-
2025 100 Questions and 100% Verified Correct
Answers Guaranteed A+
_____ law states that the volume of a gas is inversely proportional to its pressure. -
CORRECT ANSWER: Boyle's
A common condition characterized by acute inflammation of the tracheobronchial tree is
- CORRECT ANSWER: acute bronchitis. Correct
A right shift of the oxygen-hemoglobin dissociation curve due to increased partial
pressure of carbon dioxide is also known as - CORRECT ANSWER: the Bohr effect.
Correct
According to the law of partial pressures, the partial pressure of gas in a mixture of
gases is - CORRECT ANSWER: directly related to the concentration of that gas in the
mixture and to the total pressure of the mixture. Correct
An increase in carbon dioxide in the blood causes - CORRECT ANSWER: a drop in pH
in the blood. Correct
An inflammation of the lower respiratory tract that involves the airways of the lungs is
called - CORRECT ANSWER: pneumonia. Correct
An obstructive lung disorder that is characterized by recurring spasms of the smooth
muscles in the wall of the bronchial air passages is - CORRECT ANSWER: asthma.
Correct
During inspiration, as the size of the thorax increases, the - CORRECT ANSWER:
intrapleural and alveolar pressures decrease. Correct
, During respiration, the thorax - CORRECT ANSWER: becomes larger when the chest is
raised. Correct
During the respiratory cycle, intrapleural pressure is always less than alveolar pressure.
This difference is called - CORRECT ANSWER: transpulmonary pressure. Correct
Gas exchange occurs only in the - CORRECT ANSWER: alveoli
Hyperpnea means a(n) - CORRECT ANSWER: increase in breathing. Correct
If you were to trace the movement of air through the nose into the pharynx, it would
pass through the following structures in which order? - CORRECT ANSWER: anterior
nares, vestibule, meatus, and posterior nares Correct
In what form does oxygen travel in the blood? - CORRECT ANSWER: dissolved oxygen
in the plasma
associated with hemoglobin
More than two-thirds of the carbon dioxide carried by blood is carried in the form of -
CORRECT ANSWER: bicarbonate ions. Correct
Oxygen enters blood from alveolar air because the partial pressure of alveolar air is -
CORRECT ANSWER: greater than the partial pressure of incoming blood. Correct
Pressure gradients are established by changes in the - CORRECT ANSWER: thoracic
cavity. Correct
The _____ of each lung lies against the ribs and is rounded to match the contours of the
thoracic cavity. - CORRECT ANSWER: costal surface Correct
The _____ represents the largest volume of air an individual can move in and out of the
lungs. - CORRECT ANSWER: vital capacity Correct
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