What two chemicals are necessary for muscle contraction to occur?
A. Niacin and Potassium
B. Calcium and ATP
C. Sodium and Potassium
D. Ach and Potassium
Select your answer:
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Cardiovascular Physiology - Function › ViewWhen acetylcholine is released, it causes the heart rate to:
A. Increase and atrioventricular conduction rates too slow
B. Increase and atrioventricular conduction rates to increase
C. Slow and atrioventricular conduction rates to increase
D. Slow and atrioventricular conduction rates too slow
Composition Of Human Blood › View
What is the characteristics of the red blood cells?
A. It Has an elastic plasma membrane.
B. Its does not have a nucleus.
C. The biconcave disc shape enables a large TSA/V for gaseous exchange.
D. It is produced in bone marrow of bones and can live up to 120 days.
E. All of the above