The regulation of smooth muscle contraction is mediated by the phosphorylation of ____ in response to calcium binding to ____
a. myosin; calmodulin
b. actin; calmodulin
c. troponin; calmodulin
d. myosin; troponin
e. actin; troponin
A
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A student in your physiology lab is thirsty and decides to sneak a drink of deionized or distilled water. The student drinks a fairly large quantity of this water in a short period of time. What will happen to the student's cells?
A) It will cause the student's cells to shrink. B) It will make the cells hypovolemic. C) Water is water, so it will not do anything to the student's cells. D) It will cause the student's cells to swell. E) It is an isotonic solution, so water will enter and leave cells at the same rate.
Emily is in labor with her first child. The amplitude-modulated system would show her oxytocin levels ________.
A. too weak to measure B. to have a strong signal C. to have a weak signal D. to have a moderate signal
The head of the humerus and the glenoid cavity form a ball-and-socket joint.
Answer the following statement true (T) or false (F)
The probability of a certain event occurring is defined as: P = number of specific events/total number of events. If an event happens one out of every two times its probability is ________
A) 50% B) 25% C) 100% D) 10%