The respiratory center is most likely to increase the breathing rate if the
A) concentration of carbonic acid is decreasing.
B) pH of body fluids is increasing.
C) pH of body fluids is decreasing.
D) concentration of sodium bicarbonate is increasing.
C
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Intermediate filaments
A) form the neurofilaments in nerve cells. B) provide the cell with strength. C) transport materials within the cytoplasm. D) stabilize the position of organelles. E) All of the answers are correct.
The layer of the digestive tract that generates peristalsis is the:
a. serosa b. muscularis c. submucosa d. mucosa
Antidiuretic hormone promotes both sodium and water retention
Indicate whether the statement is true or false
Which of the following definitions best describes the timbre of sounds?
A. Resonance quality B. Pitch C. Amplitude D. Loudness E. Wave frequency