Question 1
Question
Increasing carbondioxide content of blood results in
Answer
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increased H+
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decreased pH
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increased pH
Question 2
Question
A drop in the body’s production of carbonic anhydrase would:
Answer
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hinder the formation of carbonic acid.
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hinder the formation of oxyhemoglobin.
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hinder the formation of carbaminohemoglobin.
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do all of the above.
Question 3
Question
Partial pressure of oxygen is [blank_start]higher[blank_end] in alveolar air than in venous blood
Question 4
Question
Internal respiration
Answer
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also known as systemic gas exchange
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occurs between blood and body cells
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O2 moves from blood into cells, CO2 moves from cells into blood
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all of the above
Question 5
Question
External respiration is also known as
Answer
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systemic gas exchange
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pulmonary gas exchange
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aerobic respiration
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all of the above
Question 6
Question
Each hemoglobin molecule can carry this many oxygen molecules.
Question 7
Question
If the tidal volume were 600 ml, the alveolar ventilation would be about:
Answer
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550 ml
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400 ml
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300 ml
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250 ml
Question 8
Question
Carbon dioxide is carried in three forms in the blood. Ranking them from greatest to least amount carried, the sequence would be
Answer
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dissolved in the plasma, carbaminohemoglobin, and bicarbonate ion
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carbaminohemoglobin, bicarbonate ion, and dissolved in plasma
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bicarbonate ion, dissolved in plasma, and carbaminohemoglobin
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bicarbonate ion, carbaminohemoglobin, and dissolved in plasma
Question 9
Question
The largest of the paranasal sinuses is the
Answer
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maxillary
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frontal
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ethmoid
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sphenoid
Question 10
Question
The structure known as the “Adam’s apple” located in the neck is the
Answer
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epiglottis
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cricoid cartilage
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glottis
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thyroid cartilage
Question 11
Question
The structures that deflect air as it passes through the nose are called
Answer
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choanae
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paranasal sinuses
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conchae
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vibrissae
Question 12
Question
This part of the respiratory system does not function as an air distributor
Answer
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trachea
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bronchi
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bronchioles
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alveoli
Question 13
Question
Gas exchange, the lungs’ main and vital function, takes place in the
Answer
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bronchioles
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secondary bronchi
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primary bronchi
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alveoli
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All of the above
Question 14
Question
Which of the following is not a part of the nasal septum?
Answer
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Perpendicular plate
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Cartilage
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Vomer
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Palatine process
Question 15
Question
When the diaphragm and external intercostals contract?
Question 16
Question
Which of the following is the last stop for air in the respiratory system?
Answer
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Trachea
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Bronchus
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Alveolus
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Nose
Question 17
Question
Pleural cavity is located between?
Answer
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parietal and visceral pleura
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visceral pleura and alveolar sac
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parietal pleura and pulmonary capillary
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all of the above
Question 18
Question
Lungs are made up of?
Answer
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bronchi
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bronchioles
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alveolar sacs
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All of the above
Question 19
Question
Oxyhemoglobin formation is favored during
Answer
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internal respiration
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systemic gas exchange
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pulmonary gas exchange
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none of the above
Question 20
Question
The tendency of the thorax and lungs to return to the pre-inspiration volume is called
Answer
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compliance
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elastic recoil
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expiration
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ventilation
Question 21
Question
The small openings in the cribriform plate function to
Answer
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a. allow air to move between the nostrils
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b. allow branches of the olfactory nerve to enter the cranial cavity and reach the brain
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c. provide a filtering system for the inspired air
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d. Both A and B
Question 22
Question
The function of surfactant is to
Answer
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transport the oxygen from the air to the blood
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transport the carbon dioxide from the blood to the air
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prevent each alveolus from collapsing as air moves in and out during respiration
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trap foreign particles as they enter the bronchial tree
Question 23
Question
The volume of air available for gas exchange per minute is called?
Question 24
Question
In the right lung, the superior and middle lobes are separated by the
Question 25
Question
At the level of the hyoid bone
Answer
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the laryngopharynx becomes the esophagus
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the oropharynx becomes the laryngopharynx
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the nasopharynx becomes the oropharynx
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the nasopharynx becomes the laryngopharynx
Question 26
Question
Much of the nasal passage is lined with this mucous membrane
Answer
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stratified columnar epithelium
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pseudostratified columnar epithelium
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simple squamous epithelium
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simple columnar epithelium
Question 27
Question
Which of the following constitutes total lung capacity?
Answer
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Residual volume and vital capacity
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Tidal volume, inspiratory reserve volume, and expiratory reserve volume
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Residual volume and tidal volume
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Vital capacity and tidal volume
Question 28
Question
If the tidal volume of a given individual is 500 ml, then the anatomical dead space is approximately:
Answer
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50 ml.
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100 ml.
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150 ml.
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200 ml.
Question 29
Question
In order to inhale we [blank_start]increase[blank_end] the size of our thoracic cavity, which [blank_start]decreases[blank_end] internal pressure.
Answer
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increase
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decrease
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decreases
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increases
Question 30
Question
Hypoxia may result with an increase in altitude because
Answer
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there is a relatively fixed number of erythrocytes
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the respiratory rate decreases
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the heart is less efficient in pumping blood
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atmospheric O2 decreases
Question 31
Question
The term used to describe the volume of air moving into or out of the lungs during normal inspiration and expiration is
Question 32
Question
Oxygen is not transported in the blood this way
Question 33
Question
Boyle law states that the volume of a gas varies:
Answer
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directly with pressure at a constant temperature
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inversely with pressure at a constant temperature
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directly with pressure at a constantly changing temperature
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inversely with pressure at a constantly changing temperature
Question 34
Question
Air movement occurs from area of _____ to area of _____?
Answer
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a. low pressure, high pressure
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b. high pressure, low pressure
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c. high concenration, low concentration
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d. both b and c
Question 35
Question
What percentage of carbon dioxide we generate is converted to bicarbonate ions in the red blood cells ?
Question 36
Question
What percentage of carbondioxide is transported bound to hemoglobin.
Question 37
Question
By the time the blood leaves the lung capillaries to return to the heart, what percentage of the blood’s hemoglobin has united with oxygen?