Hole's Human Anatomy & Physiology (Shier), 12th Edition

Ph.I.L.S. 3.0 Quizzing 25: Ph.I.L.S. 3.0 Quizzing

Ph.I.L.S. 3.0 Quizzing

1
What was the amplitude of EPSP #2 at a time interval of 200 ms?
A)About 15 mV.
B)About 10 mV.
C)About 5 mV.
D)0 mV.
2
Look at your results. What was the longest time interval when temporal summation was recorded?
A)About 200 ms.
B)140 to 160 ms.
C)80 to 100 ms.
D)20 to 40 ms.
3
Look at your results. What was the longest time interval when the total amount of depolarization was greater than that recorded at an interval of 200 ms?
A)140 to 160 ms.
B)80 to 100 ms.
C)20 to 40 ms.
4
What happened to the total amount of membrane depolarization when the time interval was decreased from 160 ms?
A)The total amount of membrane depolarization decreased.
B)The total amount of membrane depolarization remained constant.
C)The total amount of membrane depolarization increased.
5
The muscle fibers in this preparation do not generate action potentials. If they did, and the threshold was 15 mV depolarized than resting, what would be the longest time interval required for the two EPSPs to reach threshold?
A)160 ms.
B)100 ms.
C)40 ms.
D)20 ms.
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