Functions of the nasal cavity include all of the following except
A) filtering the air.
B) warming the air.
C) humidifying the air.
D) housing tonsils.
E) housing olfactory receptors.
D
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Specialized structures within a cell that have a characteristic shape and perform specific functions in cellular growth, maintenance and reproduction are called
a) organelles. b) cytoskeletons. c) cytoplasm. d) cytosol. e) nuclei.
Both "turn on" factors (hormonal, humoral, and neural stimuli) and "turn off" factors (feedback inhibition and others) may be modulated by the activity of the nervous system
Indicate whether the statement is true or false
Chemical buffer systems
a. respond in one to three minutes to changes in hydrogen ion concentration b. stimulate the respiratory center when acidosis occurs c. promote H+ excretion by the kidneys when acidosis occurs d. are the most powerful mechanism for regulating changes in [H+] within the body e. buffer changes in acid or base levels
The three hormonal factors that influence Ca2+ metabolism are ____________________, ____________________, and ____________________
Fill in the blank(s) with correct word