The long absolute refractory period of cardiomyocytes ________.
A. causes the pacemaker potential
B. makes the heart prone to arrhythmias
C. ensures a short twitch
D. prevents tetanus
E. prevents the occurrence of ectopic focuses
Answer: D
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The body's innate defenses include all of the following except
A) the skin. B) complement. C) interferon. D) inflammation. E) antibodies.
Drinking a liter of water will cause the osmolarity of blood plasma to
A. increase. B. decrease.
The patient is in her first trimester of pregnancy. She complains of feeling nauseated and has vomited on occasion. She tells the nurse that she did not have this with her first pregnancy
She asks the nurse, "What is causing this and when will it end?" How should the nurse respond? What will be an ideal response
A signal molecule that is secreted into the external environment, instead of into the blood, is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).