K / P №1 in Physiology, option 5

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Uploaded: 03.10.2013
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1. The mechanism of excitation along the nerve fibers. The structural features of non-fleshy and pulpy fibers and holding them. Laws of excitation along the nerve fibers
2. The nature of the spread of excitation in the central nervous system (divergence, convergence, circulation). Reflex aftereffect. Irradiation of excitation in the central nervous system
3. The concept of higher nervous activity. Conditioned reflexes and how they differ from unconditional. Terms and conditions of formation of conditioned reflexes.
4. Breath, its main stages. Regulation of breathing. Respiratory Center. The role of carbon dioxide, oxygen and hydrogen ions in the regulation of the rhythmic activity of the respiratory center.
5. The concept of analyzers (sensory systems). Hearing analyzer. Receptors snails, their structure and function

20 test items
1) Built-in cell membrane protein molecule that provides the electoral transition of ions through the membrane from the energy of ATP is:
1. The specific ion channel
2. channel leakage
3. The non-specific ion channel
4. The ion pump

2) The inner surface of the membrane of the excitable cells in relation to the outside in the meadow charged:
1. 2. positively not negatively charged 3. 4. of like
3) The establishment of the resting potential of nerve fibers leading role belongs nonam:
1. potassium sodium 2. 3. 4. Calcium chloride

4) The rising phase of the action potential is called:
1. fast rapid depolarization repolarization 2. 3. 4. The trace depolarization hyperpolarization

5) Local response occurs under the action of the stimulus:
1. 2. subthreshold force threshold strength 3. suprathreshold force

6) The minimum strength of the stimulus required for the emergence of a response is called:
Subthreshold 1. 2. 3. inadequate 4. subnormal threshold
7) The period of subnormal excitability matches:
1. rapid depolarization 2. 3. quick rspolyarizatsii trace depolarization 4. hyperpolarization

8) Reduction of muscles when both ss end fixedly secured called:
1. 2. isotonic isometric 3. 4. optimal psssimalnym

9) nerve fiber carries excitation:
1. damped 2. 3. slowed right

10) The basis of the formation of the toothed tetanus is: 1. a complete summation of muscular contractions (2. 3. summatsnya incomplete summation of both kinds of muscle contractions

Additional information

11) What is the time of the reflex?
1. The time of excitation of afferent and efferent fibers from the beginning of time, before the reflex irritation
the latent period of the working body
the time of the excitation through the synapses

12) What is the mesencephalic reflex?
2. 3. 1.rogovichny ankle pupillary 4.kolenny

13) What part of the neuron is highly selective chemical sensitivities?
1. membrane presynaptic terminals 2. 3. hillock axon membrane membrane dendrites 4. subsynaptic (postsynaptic) membrane

14) Which of the following features of the excitation characteristic of the nerve center?
1 transformation rate excitations 2. conducting a high speed 3. 4. Bilateral holding isolated holding

15) On what schedule reflected EPSP?

16) What is the phenomenon of the central nervous system, providing the appearance of the reflex act on multiple subthreshold stimulation? 1. 2. occlusion 3. irradiation relief summation 4
17) Why is the aftereffect of the central nervous system?
plasticity of the nerve centers
central synaptic delay
spatial summation of excitations
closed loop excitation of neuronal circuits

18. For what kind of braking characteristic present scheme of synapses?
braking after excitation

19. What type of braking is carried Renshaw cell?
1. braking after excitation 2. Pessinalnoe
3. 4. presynaptic postsynaptic

20. What is the phenomenon observed with the weakening of inhibitory processes in the CNS?
1. The increase in reflex time 2. The generalization of the reflex response
3. 4. The weakening of the reflex reflector less time-effect



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