Biology 241 – Lecture Chapter 12 ( Nervous Tissue ) Practice Quiz
I.
Arrange the answers in their correct sequence:
_____, _____, _____ 1.
In order of transmission across a synapse, from first structure to last:
A.
Presynaptic end bulb B.
Postsynaptic neuron C.
Synaptic cleft
_____, _____, _____ 2.
Membrane potential values, from most negative to most positive:
A.
Resting membrane potential B.
Reversed membrane potential C.
Threshold potential
II.
Circle the letter preceding the one best answer to each question:
3.
Choose the one FALSE statement:
A.
The membrane of a resting neuron has a membrane potential of -70mV.
B.
In a resting membrane, permeability to K + ions is less than permeability to Na + ions.
C.
Thin, unmyelinated neuronal fibers have a relatively slow rate of nerve transmission.
4.
A term that means the same thing as afferent is:
A.
Autonomic B.
Somatic C.
Peripheral D.
Motor E.
Sensory
5.
When an action potential reaches presynaptic end bulbs, the neurilemma there becomes more permeable to
_____ which then initiate release of neurotransmitter from synaptic vesicles.
A.
Na + B.
K + C.
Ca +2 D.
Cl -
III.
Circle T (True) or F (False). If the statement is false, cross out the word(s) that make it false and write in an appropriate correction so that the statement now becomes a true statement.
T F 6.
The concentration of potassium ions is considerably greater inside a resting cell than outside it.
T F 7.
Oligodendrocytes,astrocytes, ependymal cells, and neurons are all neuroglial cells.
T F 8.
Neurotransmitter substances are released at synapses and at neuromuscular junctions.
T F 9.
The brain and spinal nerves are parts of the peripheral nervous system (PNS).
T F 10.
An excitatory nerve stimulus will temporarily increase permeability of the neurilemma to Na + .
IV.
Using the blanks provided, fill-in the word or phrase that best fits the description given:
_____________________ 11.
This branch of the Nervous System consists of the Symphathetic and Parasym-
pathetic Divisions.
( Give a brief explanation ) 12.
Application of cold to a painful area can decrease pain in that area because:
_____________________ 13.
Release of neurotransmitters only from these explains the one-way nerve impulse
transmission along neurons.
_____________________ 14.
Schwann cells can regenerate, and they are found ONLY around neuron fibers
belonging to this part of the nervous system.
_____________________ 15.
This is the full name of the neurotransmitter substance whose abbreviation is ACh.