Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
part 1.doc
Скачиваний:
3
Добавлен:
01.07.2025
Размер:
4.96 Mб
Скачать

4.Materials for auditory self-work.

4.1.List of study practical tasks necessary to perform at the practical class.

Materials and methods: current source, electrodes, preparating plank, glass plate, kymograph, current source, metronom, cotton wool, napkin, sodium chloridum, 0,5% solution of sulfuric acid.

Investigation object: frog.

Task 1. Temporary excitement summation.

The experiment must be performed on thalamic frog. For this aim it’s necessary to cut frog’s head behind her eyes. Then students should put the animal to the operation table. You should fix the electrodes on one of posterior legs. The electrodes must be connected with the stimulator. The electrodes must be put above and below knee joint over the distance at least 0,5 cm between each other. One should find threshold irritation force. Then one must observe the reaction at irritation with the frequency of 1 Herz, 20 Herz.

Task 2. Excitement summation.

Thalamic frog must be hanged by her inferior jaw on hook. You must put cork at the end of the hook till the end of the animal’s movements. Spatial summation can be observed while flexing reflex. You must wash frog’s posterior leg fingers ends in threshold concentration acid and determine reflex time having counted seconds number from the beginning of fingers sinking till the leg’s jerking back moment. Then after leg’s washing in the glass of water you must determine reflex time at foot sinking in acid.

5. Literature recommended:

1. Lecture course.

2. Mistchenko V.P., Tkachenko E.V. Methodical instructions for medical students (short lecture course).-Poltava, 2005.-P. 13-14.

3. Mistchenko V.P., Tkachenko E.V. Methodical instructions on Normal Physiology on practical classes for dental and medical students.-Poltava, 2005.-P.34-36.

4. Mistchenko V.P., Tkachenko E.V. Methodical instructions for dental students (short lecture course).-Poltava, 2005.-P.12-13.

5. Kapit W., Macey R.I., Meisami E. The Physiology Colouring Book: Harpers Collins Publishers, 1987.-P.16, 82.

6. Guyton A.C. Textbook of Medical Physiology.-NY, 1992.-P. 562-571.

6.Materials for self-control:

A. Control questions:

  1. Neuron. Neurons main features and functions.

  2. Synapses structural and functional peculiarities.

  3. Chemical and electrical synapses functional distinguishing features.

  4. Exciting mediators.

  5. Nervous center and its part.

  6. Excitement conductive mechanism in nervous centers.

  7. Exciting post-synaptic potential. EPSP ionic mechanisms.

  8. How to explain one-sided and retarded (lacked) excitement conductance in synapses?

  9. How to explain nervous centers fatigue?

  10. Temporal (consequent) excitement summation.

  11. Spatial summation (realized at the same time).

  12. Excitement rhythm transformation (decreasing and increasing).

  13. Excitement afteraction and its significance.

  14. Explain significance of nervous centers sensitivity to oxygen deficiency and chemicals.

  15. Inhibitory neurons and their functions. Inhibitory mediators.

  16. Central inhibition main types. Inhibitory synapses.

  17. Presynaptic inhibiting developmental mechanisms.

  18. Postsynaptic inhibiting developmental mechanisms.

  19. Inhibitory postsynaptic potential (IPSP).

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]