PNB 2264 Final Cumulative Exam Questions and Answers 100% Solved
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Course
PNB 2264
Institution
PNB 2264
PNB 2264 Final Cumulative Exam
Questions and Answers 100% Solved
During contraction of the sarcomere:
A. The size of the I band decreases
B. The size of the A band decreases
C. The size of the H zone increases
D. Both A & B are correct - A. The size of the I band decreases
The concentration ...
d. In adults, the CNS contains a fixed amount of neurons for the duration of
an individual's life.
e. All of the above are true - ✔✔c. Neurons usually outlive many other cells
inside the body.
Ion X is negatively charged. Its concentration outside the cell is 200mM,
and its concentration inside the cell is 50mM. The cell is permeable to ion
X. The equilibrium potential for this ion:
a. Would be positive
b. Would be negative
c. May be positive or negative
d. Would be zero - ✔✔b. Would be negative
Internodes:
a. Are unmyelinated regions of the axon
b. Contain relatively higher numbers of voltage gated ion channels than
other regions of the axon
c. May be created by Schwann cells
d. Are regions where presynaptic and postsynaptic neurons communicate -
✔✔C. May be created by Schwann cells
Which of the following is not a glial cell of the central nervous system?
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