Pacemaker cells isolated from the SA node generate action potentials at ________ beats per minute
A) 20-40
B) 40-60
C) 80-100
D) 100-140
E) 140-180
Answer: C
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_____________ is the bacterium that causes gastric ulcers
Fill in the blank with the correct word.
Similar cells that have a common function are called ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is true concerning the number and type of permanent teeth?
A) There are 32 permanent teeth, and the wisdom teeth are the last to emerge. B) There are 27 permanent teeth, and the first molars are usually the last to emerge. C) The number of permanent teeth is always equal to the number of primary teeth. D) The number of upper permanent teeth is not equal to the number of lower permanent teeth.
Enteroendocrine cells of the GI tract produce some hormones that are chemically identical to neurotransmitters
Indicate whether the statement is true or false