The rising phase of a cardiac pacemaker action potential is caused by a __________ current
A) Potassium
B) Sodium
C) Chloride
D) Calcium
Fill in the blank with the correct answer.
Answer: D
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Which of the following occurs when water loss is greater than water gain?
a) Dehydration b) Evaporation c) Precipitation d) Insensible loss e) None of these choices
Compare red and white muscles relative to their speed of action and endurance
What will be an ideal response?
When fats are used for energy, they are converted to:
a. a glucose-like substance and enter glycolysis b. pyruvic acid and enter the electron transport system c. a glucose-like substance and enter the citric acid cycle d. either A or C can occur
Sam was a 60 year old man. As a result of picking up a heavy object he fractured the radius and ulna of his right arm
X-rays indicated that he had severe osteoporosis. His blood calcium levels were above normal and the pathologist found cancer cells that produced a hormone-like substance. That substance was most likely A. thyroid hormone. B. calcitonin. C. growth hormone. D. parathyroid hormone. E. vitamin D.