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BIO 101 Exam 12

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Question 1

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Oxygen is transported in blood most efficiently by

Select one:

a. being dissolved in the plasma.

b. chemical conversion to water.

c. combining with hemoglobin.

d. combining with carbon dioxide to form bicarbonate ions.

e. a free oxygen ion or radical.

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Question 2

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Which is NOT a correct association of lower respiratory problems and causes or symptoms? 

Select one:

a. chronic bronchitis—ongoing inflammation and possible infection of bronchi with loss of cilia

b. pulmonary fibrosis—loss of lung elasticity due to breathing silica, coal dust, asbestos, etc.

c. emphysema—reduced lung and chest volume due to collapsed alveoli and overventilation

d. pulmonary tuberculosis—a bacterial infection that the body tries to isolate and seal off

e. Pneumocystis carinii—pneumonia caused by a fungus in absence of healthy immune system

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Question 3

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A lung disease caused by bacteria which become encapsulated is called

Select one:

a. emphysema.

b. pneumonia.

c. rheumatic fever.

d. tuberculosis.

e. pulmonary fibrosis.

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Question 4

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What happens to the pH of the bloodstream if a person hypoventilates?

Select one:

a. the pH of the blood will decrease

b. the pH of the blood will increase

c. the pH of the blood will initially increase and then dramatically decrease

d. the pH of the blood will initially decrease and then dramatically increase

e. nothing will happen to the pH of the blood

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Question 5

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The breathing rate is controlled by chemoreceptors that detect

Select one:

a. levels of oxygen in the alveolar air space.

b. levels of oxygen in the blood.

c. levels of carbon dioxide in the alveolar air space.

d. levels of carbon dioxide in the blood.

e. level of stretching of the rib muscles and diaphragm.

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Question 6

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Blood richest in oxygen is found in the

Select one:

a. inferior vena cava.

b. superior vena cava.

c. pulmonary arteries.

d. pulmonary veins.

e. systemic capillaries.

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Question 7

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Which of the following respiratory structure will have the least amount of cartilage and the thinnest walls?

Select one:

a. larynx

b. trachea

c. bronchi

d. bronchioles

e. pharynx

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The correct answer is: bronchioles

Question 8

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From the inside of the lungs, what is the first cell type the air must pass through to reach the blood?

Select one:

a. simple squamous epithelium

b. cartilage

c. muscle

d. red blood cells

e. pseudostratified ciliated columnar epithelium

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Question 9

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In which disease of the lungs do the lungs fill with thick fluid?

Select one:

a. pharyngitis

b. sinusitis

c. emphysema

d. tuberculosis

e. pneumonia

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Question 10

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What keeps the alveoli open so that gas exchange can take place?

Select one:

a. rings of cartilage

b. surfactant

c. smooth muscle

d. mucous

e. air

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Question 11

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If a lung is punctured in a car accident, that lobe fails to inflate even though there is no obstruction of the air passageway to that lobe. Why?

Select one:

a. The trauma must have damaged the nerve path controlling ribs on that side of the lung.

b. Negative feedback prevents the ribs and diaphragm on that side from causing pain.

c. When the chest volume expands, air can now rush in through the puncture without filling the alveoli.

d. Mucus or blood must be filling the lobe.

e. Stimulation of stretch receptors in the alveolar walls initiate inhibitory nerve impulses.

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Question 12

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Which of the following statements is NOT true regarding the normal mechanism of ventilation?

Select one:

a. There must be a continuous column of air from the pharynx to the alveoli.

b. The lungs must lie within a sealed-off thoracic cavity.

c. The inner and outer pleural membranes must be separated by a thin film of fluid.

d. The intrapleural pressure must be greater than the atmospheric pressure.

e. The diaphragm, when contracted, will be lowered.

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Question 13

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The type of respiration in which gases are exchanged between the blood and tissue fluid is termed

Select one:

a. breathing.

b. external respiration.

c. internal respiration.

d. cellular respiration.

e. inspiration.

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Question 14

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By what route does CO2 leave the body? 

Select one:

a. pulmonary artery → alveolus → bronchus → bronchiole → trachea → pharynx → larynx

b. pulmonary vein → bronchiole → alveolus → bronchus → trachea → pharynx → larynx

c. pulmonary artery → alveolus → bronchiole → bronchus → trachea → larynx → pharynx

d. pulmonary vein → alveolus → bronchus → bronchiole → trachea → larynx → pharynx

e. pulmonary artery → alveolus → bronchiole → bronchus → trachea → pharynx → larynx

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Question 15

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After the trachea, what is the next structure the air passes through?

Select one:

a. bronchi

b. alveolus

c. larynx

d. pharynx

e. bronchioles

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Question 16

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Which of the following is an upper respiratory tract disease?

Select one:

a. pharyngitis

b. acute bronchitis

c. asthma

d. pneumonia

e. cystic fibrosis

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Question 17

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Aortic and carotid bodies are 

Select one:

a. the same as the SA and AV nodes.

b. types of valves in the heart.

c. present in the lungs.

d. sensitive to changes in CO2 and H+ in the blood.

e. sensitive to oxygen changes.

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Question 18

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The symptoms of laryngitis include a severe sore throat, high fever, and white patches on the throat.

Select one:

True

False

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Question 19

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A short while after a person has died, a "gasp" of air may occur as the lungs collapse. This flow would represent the

Select one:

a. tidal volume.

b. expiratory reserve volume.

c. total lung volume.

d. vital capacity.

e. residual volume.

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Which of the following symptoms would not be typical of otitis media?

Select one:

a. pain

b. sense of fullness in the ear

c. hearing loss

d. headache

e. dizziness

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Question 21

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Many lung ailments are "not curable but treatable." Which of the following conditions is most curable?

Select one:

a. advanced lung cancer with metastases

b. standard tuberculosis

c. asthma

d. emphysema

e. COPD

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Question 22

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You should treat the common cold with antibiotics to shorten the duration of symptoms.

Select one:

True

False

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The correct answer is 'False'.

Question 23

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Which of the following diseases is caused by exposure to particles inhaled primarily in the workplace (silica, coal dust, etc.)?

Select one:

a. emphysema

b. pneumonia

c. rheumatic fever

d. tuberculosis

e. pulmonary fibrosis

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Question 24

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Why does the surface of the lungs need to be covered with pleura?

Select one:

a. to allow the exchange of oxygen within the alveoli

b. to allow the exchange of carbon dioxide within the alveoli

c. to produce the muscular contractions that expand the lungs

d. to enable the lungs to slide past the internal chest wall and diaphragm

e. to prevent the alveoli from collapsing due to pressure

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Question 25

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Blood in the pulmonary capillaries has a higher partial pressure of carbon dioxide than atmospheric air.

Select one:

True

False

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