The ____________________ is a common passageway for food and air
Fill in the blank(s) with correct word
pharynx
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A person learns of having a problem with his respiratory system. Which of the following would be expected because of this problem?
A) Excessive amount of oxygen in the body B) Inability to eat solid foods C) Build-up of carbon dioxide in the body D) Change in blood pressure readings
If 20% of the air is composed of O2, the partial pressure of oxygen at sea level where atmospheric pressure is 760 mm Hg is
a. 20 mm Hg. b. 760 mm Hg. c. 70 mm Hg. d. 350 mm Hg. e. 152 mm Hg.
Which of the following occur with emphysema?
A. Membranes form within alveoli, increasing surface area. B. Tar from cigarettes blackens alveoli. C. The walls of the alveoli degenerate, decreasing the surface area for gas exchange. D. Cells in the bronchial lining divide too fast, causing increased thickness of the bronchial lining.
An organelle that contains its own DNA, independent of the nuclear DNA, is the ________.
Fill in the blank(s) with the appropriate word(s).