Fundamentals Of The Nervous System And Nervous Tissue

98 Questions  I  By Shakyrag
Please take the quiz to rate it.

Brain Quizzes & Trivia
Quiz on the fundamentals of the nervous system and the nervous tissue. This is prep for the next test and practical.

  
Changes are done, please start the quiz.


Questions and Answers Excerpt

Removing question excerpt is a premium feature

Upgrade and get a lot more done!
1.  Synapses between the axon of one neuron and the soma of another?
A.
B.
C.
D.
2.  *A brief reversal of membrane potential with a total amplitude of 100 mV*Only generated by muscle cells and neurons*They do not decrease in strength over distance*They are the principal means of neural communication*Called nerve impluses in the axon of a neuron
A.
B.
3.  Activates the intracellular receptor guanylyl cyclase, is involved in learning and memory?
A.
B.
C.
D.
4.  Cells that provide a supportive scaffolding for neurons, segregate and insulate neurons, guide young neurons to the proper connections, promote health and growth?
A.
B.
C.
D.
5.  Whitish, fatty segmented sheath around most long axons, it functions to protect the axon, electrically insulate fibers from one another, and increase the speed of nerve impulse transmission?
A.
B.
C.
D.
6.  Na+ Channel*Closed when the intracellular environment is negative*Na+ cannot enter the cell*Open when the intracellular environment is positive*Na+ can enter the cell
A.
B.
7.  Surround fibers of the PNS?
A.
B.
C.
D.
8.  Armlike extensions from the soma, called tracts in the CNS and nerves in the PNS?
A.
B.
C.
D.
9.  Used to integrate, send, and receive information, changes produced by changes in membrane permeability to ions, alterations of ion concentrations across the membrane?
A.
B.
C.
D.
10.  Brain and spinal cord, integration and command center?
A.
B.
11.  A junction that mediates information transfer from one neuron to another neuron or to an effector cell?
A.
B.
C.
D.
12.  The potential difference across the membrane of a resting neuron?
A.
B.
C.
D.
13.  Monitoring stimuli?
A.
B.
C.
14.  Mechanically gated channels?
A.
B.
C.
D.
15.  The inside of the membrane becomes less negative?
A.
B.
C.
16.  What are the 2 main parts of the Motor Division?
A.
B.
17.  Excitable cells that transmit electrical signals?
A.
B.
C.
D.
18.  *Short lives, local changes in membrane potential*Decrease in intensity with distance*Magnitude varies directly with the strength of the stimulus*Sufficiently strong graded potential can initiate action potentials*Voltage changes are decremental*Current is quickly dissipated due to the leaky membrane*Only travel over short distances
A.
B.
19.  ____________________ neurotransmitters cause depolarizations?
A.
B.
20.  Carry impulses away from the CNS?
A.
B.
C.
21.  What are the functions of the nervous system?
A.
B.
C.
D.
22.  Synapses between the axon of one neuron and the dendrite of another?
A.
B.
C.
D.
23.  Gaps in the myelin sheath between adjacent Schwann cells, sites where axon collaterals can emerge?
A.
B.
C.
D.
24.  The inside of the membrane becomes more negative than the resting potential?
A.
B.
C.
25.  Three or more processes?
A.
B.
C.
26.  Fluid filled space separating the presynaptic and postsynaptic neurons, prevents nerve impulses from directly passing from one neuron to the next, transmission is a chemical event, and ensures unidirectional communication between neurons?
A.
B.
C.
27.  Main regulator of cGMP in the brain?
A.
B.
C.
D.
28.  Input travels along one pathway to a specific destination, works in an all or none manner?
A.
B.
29.  Na+ - K+ Gated Channel*Closed when a neurotransmitter is not bound to the extracellular receptor*Na+ cannot enter the cell and K+ cannot exit the cell*Open when a neurotransmitter is attached to the receptor*Na+ enters the cell and K+ exits the cell
A.
B.
30.  Carry impulses from skin, skeletal muscles, and joints to the brain?
A.
B.
31.  Time from the opening of the Na+ activation gates until the closing of inactivation gates?
A.
B.
32.  The membrane retunrs to its resting membrane potential?
A.
B.
C.
33.  A schwann cell surrounds nerve fibers but coiling does not take place, schwann cells partially enclose 15 or more axons?
A.
B.
C.
D.
34.  Contains the nucleus and a nucleolus, the major biosynthetic center, the focal point for the outgrowth of neuronal processes, has no centrioles, has well developed Nissl bodes, contains an axon hillock?
A.
B.
C.
D.
35.  Short tapering and diffusely branched processes, receptive or input regions of the neuron, electrical signals are conveyed as graded potentials?
A.
B.
C.
D.
36.  Regulates smooth muscle, cardiac muscle, and glands?
A.
B.
37.  Shuttle signals through CNS pathways?
A.
B.
C.
38.  Single, short process?
A.
B.
C.
39.  Electrical impulses carried along the length of axons, always the same regardless of stimulus, the underlying functional feature of the nervous system?
A.
B.
C.
D.
40.  What is the correct order for the phases of the Action Potential?
A.
B.
C.
D.
41.  Prevents the neuron from generating an action potential, ensures that each action potential is separate, enforces one-way transmission of nerve impulses?
A.
B.
42.  Voltage-gated channels?
A.
B.
C.
D.
43.  *Sodium inactivation gates close*K+ gates open*K+ exits the cell, internal negativity of the resting neuron restored
A.
B.
C.
D.
44.  Mostly soma and unmyelinated fibers?
A.
B.
45.  Hindrance to charge flow?
A.
B.
C.
D.
46.  Ions move quickly across the membrane, movement is along their electrochemical gradients, an electrical current is created, voltage changes across the membrane?
A.
B.
47.  Transmit impulses toward the CNS?
A.
B.
C.
48.  Substance with low electrical resistance?
A.
B.
C.
D.
49.  Released at the neuromuscular junction, synthesized and enclosed in synaptic vesicles, released by all neurons that stimulate skeletal muscle, some neurons in the autonomic nervous system?
A.
B.
C.
D.
50.  Their plasma membrane function in electrical signaling, cell-to-cell signaling during development?
A.
B.
C.
D.
51.  Branched cells that wrap CNS nerve fibers?
A.
B.
C.
D.
52.  *Na+ permeability increses, membrane potential reverses*Na+ gates are opened, K+ gates are closed*Threshold -55 - -50mV
A.
B.
C.
D.
53.  Which division of the PNS contain Sensory and Visceral afferent fibers?
A.
B.
54.  Less common variety, correspond to gap junctions found in other cell types, important in the CNS for arousal from sleep, mental attention, emotions and memory, ion and water homeostasis?
A.
B.
C.
55.  Input travels along several pathways, pathways are integrated in different CNS systems, one stimulus promotes numerous responses?
A.
B.
56.  *Potassium gates remain open, effux of K+*neuron is insensitive to stimulus and depolarization during this time
A.
B.
C.
D.
57.  Transmit impulses from the CNS to effector organs?
A.
B.
58.  Slender processes of uniform diameter arising from the hillock, long ones are called nerve fibers, usually there is only one unbranched per neuron?
A.
B.
C.
D.
59.  Phagocytes that monitor the health of neurons?
A.
B.
C.
D.
60.  Most abundant versatile and highly branched glial cells, they cling to neurons and their synaptic endings, and cover capillaries?
A.
B.
C.
D.
61.  Specialized for the release and reception of neurotransmitters?
A.
B.
C.
62.  The flow of electrical charge between two points?
A.
B.
C.
D.
63.  Envelopes an axon in a trough, encloses the axon with its plasma membrane, has concentric layers of membrane that make up the myelin sheath?
A.
B.
C.
D.
64.  Substance with high electrical resistance?
A.
B.
C.
D.
65.  The master controlling and communicating system of the body?
A.
B.
C.
D.
66.  Paired spinal and cranial nerves, carries messages to and from the spinal cord and brain?
A.
B.
67.  Remaining nucleus and cytoplasm of a Schwann Cell?
A.
B.
C.
D.
68.  What are the two principal cell types of the nervous system?
A.
B.
C.
D.
69.  What are the 2 functional divisions of the PNS?
A.
B.
C.
D.
70.  Response to Stimuli?
A.
B.
C.
71.  Passive, or leakage, channels?
A.
B.
C.
D.
72.  Act as natural opiates, reduce pain perception, bind to the same receptors as opiates and morphine, somatostatin, endorphins?
A.
B.
C.
D.
73.  Include dopamine, norepinephrine, epinephrine, serotning, histamine, broadly distributed in the brain, play roles in emotional behaviors and our biological clock?
A.
B.
C.
D.
74.  Transmits impulses away from the synapse?
A.
B.
75.  Dense collections of myelinated fibers?
A.
B.
76.  Support and brace neurons, anchor neurons to their nutrient supplies, guide migration of young neurons, control the chemical environment?
A.
B.
C.
D.
77.  Chemically gated channels?
A.
B.
C.
D.
78.  Transmit impulses from visceral organs to the brain?
A.
B.
79.  Include GABA, Glycine, Apartate, Glutamate, Found only in the CNS?
A.
B.
C.
D.
80.  Generate and transmit action potentials, secrete neurotransmitters from the terminals?
A.
B.
C.
D.
81.  *Na+ and K+ channels are closed*Activation Gates - closed*Inactivation Gates - open
A.
B.
C.
D.
82.  Surround neuron cell bodies with ganglia?
A.
B.
C.
D.
83.  Formed by Schwann cells in the PNS?
A.
B.
C.
D.
84.  Voltage measured between two points?
A.
B.
C.
D.
85.  Measure of potential energy generated by separated charge?
A.
B.
C.
D.
86.  Two processes (axon and dendrite)
A.
B.
C.
87.  The larger the diameter, the faster the ______?
A.
B.
C.
D.
88.  What are the ways movement occurs along axons?
A.
B.
C.
D.
89.  They line the central cavities of the brain and spinal column?
A.
B.
C.
D.
90.  Cells that surround and wrap neurons?
A.
B.
C.
D.
91.  Both myelinated and unmyelinated fibers are present, myelin sheaths are formed by oligodendrocytes, Nodes of Ranvier are widely spaces, no neurilemma?
A.
B.
C.
D.
92.  Contain the sympathetic and parasympathetic divisions?
A.
B.
93.  Conscious control of skeletal muscles?
A.
B.
94.  ________________ neurotransmitters cause hyperpolarizations?
A.
B.
95.  Found in both the CNS and PNS, provokes pain sensation?
A.
B.
C.
D.
96.  Interpretation of sensory input?
A.
B.
C.
97.  Conducts impulses toward the synapse?
A.
B.
98.  Sodium gates are closed, potassium gates are open, repolarization is occurring, the threshold level is elevared allowing strong stimuli to increase the frequency of action potential events?
A.
B.
Back to top

Removing ad is a premium feature

Upgrade and get a lot more done!
Take Another Quiz
We have sent an email with your new password.