Which fluids are buffered by the phosphate buffer system?
A) ECF, blood plasma
B) ICF, blood plasma
C) ICF, ECF, blood plasma
D) ECF, urine
E) ICF, urine
Answer: E
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What type of muscular activity is present in a muscle at rest?
A) There is some activity that causes the muscle to make continual tiny movements. B) There is no activity. C) There are large amounts of short contraction. D) Motor units activate in a random pattern to cause slight constant tension, known as muscle tone. E) Motor units activate partially in a unified wavelike motion.
The contraction phase of the cardiac cycle is called systole
Indicate whether the statement is true or false
A stroke is a
a. cerebrovascular accident. b. glucose deficiency. c. loss of the myelin sheath. d. neurotransmitter deficiency. e. uncontrolled firing of neurons.
Which of the following statements concerning parasympathetic innervation of the digestive tract is incorrect?
a. in general, parasympathetic stimulation is excitatory to the digestive system. b. parasympathetic innervation to the digestive tract comes primarily through the vagus nerve. c. parasympathetic innervation is part of the extrinsic nerve supply to the digestive tract. d. parasympathetic stimulation of the salivary glands produces a saliva rich in mucus. e. parasympathetic stimulation increases salivary, gastric, pancreatic, and biliary secretion.