physiology sem1 (v1)
1) excitable tissues are
1. The nervous tissue
2. Connective tissue
3. Bone
4. Muscle tissue
5. glandular epithelium
6. Epithelial tissue
2) What are the biological irritants:
1. Word
2. Electric current
3. Sound
4. Hormones
5. Temperature
6. The osmotic pressur
7. The reaction (pH)
8. The metabolic products
3) The response of epithelial tissues to the action of the stimulus:
1. irritation
2. Excitation
3. Irritability
4. Excitability
5. lability
6. conductivity
4) Specify the mechanisms that form the membrane potential (MP):
1. By-Na pump repolarization
2. Concentration and electrochemical gradients trace electropositive potential
3. Pump-Na, diffusion, capillary forces
4. By-Na pump, concentration and electrochemical gradients
5. By-Na pump, electrochemical gradient, perfusion
5) How is the movement of ions and mainly what caused repolarization phase:
1. Slow flow of K + into the cell
2. The output of K + out of the cell
3. Out of K + and Na + out of the cell
4. Receipt of K + and Ca2 + into the cell
5. Log into the cell Cl-
6. Fast Na + entry into the cell
6)What the properties of the local response:
1. Powered by the law of power relations
2. The method of summation
3. spreads with decrement
4. There is the action of subliminal stimuli
7) In the phase of exaltation: a) what happens to excitability ?; b) what is the reason?
1. A) excitability reduced to 0%; b) inactivated sodium channels
2. A) the excitability is gradually recovering; b) activated sodium channels
3. A) excitability reduced to 0%; b) inactivated sodium channels
4. A) excitability is increased by 10-20%; b) lower the threshold depolarization
8) What is rheobasis?
1. The threshold force
2. Productive time
3. The level of critical depolarization
4. chronaxy
5. The local response
9) Indicate: a) how the excitability at anodicheskoy exaltation; b) what mechanism underlies this:
1. A) is reduced; b) an increase in permeability to Ca2 +
2. A) increases; b) an increase in permeability to K +
3. A) is reduced; b) an increase in permeability to Na + ions
4. A) increases; b) changes in the level of critical depolarization
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