Cardiac contraction is graded by varying the strength of contraction of all the cardiac muscle cells by intrinsic and extrinsic control mechanisms
a. True
b. False
Indicate whether the statement is true or false
True
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Answer the following statements true (T) or false (F)
1. Hydrolysis is virtually the reverse of a dehydration synthesis reaction. 2. Acids produce an excess of H+ ions. 3. Bases produce an excess of OH– ions. 4. An increase in H+ ions will cause an increase in the pH value. 5. An increase in pH value would mean more H+ ions are in solution.
Muscle hypertrophy in humans is primarily due to what?
A. increase in number of muscle fibers B. increase in size of muscle fibers C. both A and B D. none of the above
Blood pressure would INCREASE as a result of a DECREASE in __________.
What will be an ideal response?
The vesicles that contain melanin are
A. cyanosis. B. carotene. C. dermatitis. D. albinism. E. melanosomes.