Hemoglobin has five iron atoms that combine with oxygen gas in the lungs
a. True
b. False
Indicate whether the statement is true or false
False
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Even though this structure is part of the circulatory system, it is included in the discussion of the urinary system
A) Proximal convoluted tubule B) Glomerulus C) Loop of Henle D) Renal pelvis
The primary role of the carbonic-acid-bicarbonate buffer system is to
A) buffer stomach acid. B) buffer carbonic acid formed by carbon dioxide. C) limit pH changes caused by metabolic and fixed acids. D) buffer the urine. E) increase ventilation.
Which layer of the alimentary canal carries away absorbed nutrients?
A) Submucosa B) Muscularis externa C) Mucosa D) Serosa
The vibrational stimulus normally passes through the middle ear ossicles in the order
a. incus to the malleus to the stapes. b. incus to the stapes to the incus. c. malleus to the incus to the stapes. d. malleus to the stapes to the incus. e. stapes to the malleus to the incus.