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Updated Bio 253 Exam 3 Hondros Complete Questions and Answers 2024 FULLY SOLVED $12.99   Add to cart

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Updated Bio 253 Exam 3 Hondros Complete Questions and Answers 2024 FULLY SOLVED

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Updated Bio 253 Exam 3 Hondros Complete Questions and Answers 2024 FULLY SOLVEDUpdated Bio 253 Exam 3 Hondros Complete Questions and Answers 2024 FULLY SOLVEDUpdated Bio 253 Exam 3 Hondros Complete Questions and Answers 2024 FULLY SOLVEDUpdated Bio 253 Exam 3 Hondros Complete Questions and Answers ...

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Updated Bio 253 Exam 3 Hondros Complete
Questions and Answers 2024 FULLY SOLVED

The mechanism that produces pulmonary ventilation is one that establishes a gas pressure gradient
between the - ANSWER>>>atmosphere and the alveolar air. Correct

Pressure gradients are established by changes in the - ANSWER>>>thoracic cavity. Correct

_____ law states that the volume of a gas is inversely proportional to its pressure. - ANSWER>>>Boyle's

During inspiration, as the size of the thorax increases, the - ANSWER>>>intrapleural and alveolar
pressures decrease. Correct

The ability of the lungs and thorax to stretch is referred to as - ANSWER>>>compliance. Correct

An obstructive lung disorder that is characterized by recurring spasms of the smooth muscles in the wall
of the bronchial air passages is - ANSWER>>>asthma. Correct

During the respiratory cycle, intrapleural pressure is always less than alveolar pressure. This difference is
called - ANSWER>>>transpulmonary pressure. Correct

The sensors that provide feedback information to the medullary rhythmicity area are the -
ANSWER>>>central chemoreceptors and peripheral chemoreceptors. Correct

The apparatus used to measure the volume of air exchanged in breathing is called a(n) -
ANSWER>>>spirometer. Correct

The basic rhythm of the respiratory cycle of inspiration and expiration seems to be generated by the -
ANSWER>>>medullary rhythmicity area. Correct

Which term refers to the volume of inspired air that actually reaches, or "ventilates," the alveoli? -
ANSWER>>>alveolar ventilation Correct

The volume of air exhaled normally after a typical inspiration is called _____ volume. - ANSWER>>>tidal
Correct

Hyperpnea means a(n) - ANSWER>>>increase in breathing. Correct

The _____ represents the largest volume of air an individual can move in and out of the lungs. -
ANSWER>>>vital capacity Correct

The forced expiratory volume test can determine the presence of respiratory obstruction by measuring
the - ANSWER>>>volume of air expired per second during forced expiration. Correct

According to the law of partial pressures, the partial pressure of gas in a mixture of gases is -
ANSWER>>>directly related to the concentration of that gas in the mixture and to the total pressure of
the mixture. Correct

, Oxygen enters blood from alveolar air because the partial pressure of alveolar air is - ANSWER>>>greater
than the partial pressure of incoming blood. Correct

The amount of oxygen that diffuses into blood each minute depends on which factor? -
ANSWER>>>oxygen pressure gradient between alveolar air and incoming pulmonary blood

total functional surface area of the respiratory membrane

respiratory minute volume

alveolar ventilation

Which structural feature facilitates oxygen diffusion from the alveolar air into the blood in lung
capillaries? - ANSWER>>>The alveolar and capillary walls are both very thin.

The alveolar and capillary surfaces are both extremely large.

The lung capillaries accommodate a large amount of blood at one time.

Each red blood cell comes close to alveolar air.

The exact amount of oxygen in blood depends mainly on the amount of - ANSWER>>>hemoglobin

In what form does oxygen travel in the blood? - ANSWER>>>dissolved oxygen in the plasma

associated with hemoglobin

The compound formed when carbon dioxide combines with hemoglobin is -
ANSWER>>>carbaminohemoglobin. Correct

When carbon dioxide dissolves in water, some of the carbon dioxide molecules associate with water to
form - ANSWER>>>carbonic acid. Correct

The exit of the bicarbonate ion from the red blood cell is balanced by the inward transport of another
negative ion, chloride. This countertransport of negative ions is often called the _____ shift. -
ANSWER>>>chloride Correct

An increase in carbon dioxide in the blood causes - ANSWER>>>a drop in pH in the blood. Correct

A right shift of the oxygen-hemoglobin dissociation curve due to increased partial pressure of carbon
dioxide is also known as - ANSWER>>>the Bohr effect. Correct

Which oxygen-binding protein helps move oxygen out of the blood and into muscle cells? -
ANSWER>>>myoglobin Correct

What variations exist in the body to temporarily store or carry oxygen? - ANSWER>>>neuroglobin

myoglobin

fetal hemoglobin

More than two-thirds of the carbon dioxide carried by blood is carried in the form of -
ANSWER>>>bicarbonate ions. Correct

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