The human heart ____
a. contracts as a result of electrical stimuli from the sinoatrial node
b. contracts only as a result of nerve stimulation from the central nervous system
c. is activated primarily through the autonomic nervous system
d. contracts as a result of electrical stimuli from the atrioventricular node
e. is independent of all nervous control
ANSWER: a
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Freezing food is an excellent preservation method because freezing readily kills most if not all microorganisms contaminating the food.
Answer the following statement true (T) or false (F)
Which component of the accompanying scenario would be considered the compensatory response?
a. release of insulin b. glycogen and fat synthesis c. potassium ion channel d. increased glucose levels e. liver and muscle
Why are muscle and nervous tissue not replaced by the body if damaged or lost?
What will be an ideal response?