What does collagen provide as a component of bone?
A) elasticity
B) hardness
C) flexibility
D) brittleness
E) resistance to compression
C
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Which of the following characteristic is associated with funny channels?
a. the plateau phase of a cardiac action potential b. they open after threshold is reached c. they allow the influx of calcium d. they open when the membrane potential becomes hyperpolarized e. both (a) and (c)
The property of living organisms whereby they discharge useless or harmful wastes produced during normal function is called ________.
Fill in the blank(s) with the appropriate word(s).
All of the following are functions of the heart, except ________.
A. generating blood pressure B. separating pulmonary and systemic circulations C. adjusting blood supply, depending on tissue needs D. adjusting blood gas levels, depending on tissue needs E. moving blood in one direction
Which letter is associated with the light band and contains thin filaments only?
A. Z B. M C. A D. H E. I