Henry's law states that
A) gas volume and temperature are directly proportional.
B) gas volume and pressure are inversely proportional.
C) the volume of gas that will dissolve in a solvent is proportional to the solubility of the gas and the gas pressure.
D) in a mixture of gases such as air, the total pressure is the sum of the individual partial pressures of the gases in the mixture.
E) gas pressure is inversely proportional to gas volume.
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Question 2) Which of the following is false concerning lacrimal glands?
A) They produce a strongly hypertonic fluid.
B) They produce most of the volume of tears.
C) They produce lysozyme.
D) They produce watery, slightly alkaline secretions.
E) They are located in recesses in the frontal bones.
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Question 3) Which pressure remains negative throughout the respiratory cycle?
A) intrapulmonary
B) intrapleural
C) intra-alveolar
D) atmospheric
E) intrapulmonary and intra-alveolar
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Question 4) Jonathan received a strong blow to the eye. The eyeball remained intact but he suddenly could not see. This has likely caused
A) development of cataracts.
B) a detached retina.
C) development of glaucoma.
D) astigmatism.
E) myopia.
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Question 5) Lungs are held tightly to the wall of the thorax due to
A) the diaphragm and intercostal muscle contractions.
B) tight junctions between the lungs and the thorax.
C) surface tension of the pleural fluid and negative pressure in the cavity.
D) atmospheric pressure pushing on the lungs.
E) pulmonary ligaments that anchor the lungs.
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Question 6) The primary cause of blindness in the United States is
A) cataracts.
B) diabetic retinopathy.
C) glaucoma.
D) retinal detachment.
E) retinopathy of prematurity.
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Question 7) Air that remains in conducting passages and doesn't participate in gas exchange is termed
A) vital capacity.
B) minimal volume.
C) residual volume.
D) functional residual capacity.
E) anatomic dead space.
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Question 8) The purpose of the intrinsically photosensitive retinal ganglion cell (ipRGC) photoreceptors are
A) to give clear sharp vision.
B) to allow us to see in dim light.
C) to replace rods as we age.
D) influence the circadian rhythm.
E) to provide color vision.
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Question 9) A typical respiratory minute volume is
A) 1 liter.
B) 2 liters.
C) 500 mL.
D) 6 liters.
E) 10 liters.
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Question 10) Which of the following is a function of the pigmented layer of the retina?
A) provide eye color
B) house the photoreceptors
C) secrete vitreous humor
D) absorb light passing through the neural layer
E) refract light onto the photoreceptors
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