Exercise ______ and _______ bones
A) elongates; weakens B) thickens; elongates
C) thickens; strengthens D) thins; atrophies
C
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In echinoderms and chordates, the mouth forms second; therefore, both are__________________
Fill in the blank with the correct word.
The Tm represents the maximum amount of a particular substance that can be excreted in the urine per unit of time
Indicate whether the statement is true or false
Excess levels of blood K+ ________.
A. decrease both heart rate and contraction strength B. increase heart rate but do not affect heart contraction strength C. decrease heart rate but do not affect heart contraction strength D. increase both heart rate and contraction strength
If the chemically gated sodium channels in the postsynaptic membrane were completely blocked,
A) synaptic transmission would fail. B) release of neurotransmitter would stop. C) smaller action potentials would result. D) repolarization of the cell would stop. E) more action potentials would occur.