Physiology sem1 (v3)

A detailed illustration showing the action potential in nerve cells and smooth muscle, emphasizing excitability, ion channels, and physiological processes, with colorful labels for educational purposes.

Physiology Excitability Quiz

Test your knowledge on the excitability of tissues with this comprehensive quiz! Designed for students and professionals in the field of physiology, it covers various aspects of excitability, including the role of different ions, phases of the action potential, and the mechanisms underlying nerve and muscle excitability.

10 engaging questions
Multiple-choice format
Ideal for review or self-assessment

10 Questions2 MinutesCreated by UnderstandingCell42

1) How changes the the action of the excitability of subliminal irritants:

1. Increases

2. Goes Down

3. Do not change

2) What are the criteria with which to evaluate the excitability of the tissue:

3) Specify the phase sequence of excitability curve:

1. Exaltation

2. The relative refractory

3. The absolute refractory

4. A subnormal excitability

4) Indicate: a) what process is the basis of the excitation of nerve cells; b) what it is called

1. A) depolarization; b) a quick exit from the cell Na +

2. A) depolarization; b) rapid delivery Na + into the cell

3. A) depolarization; b) the output of K + out of the cell

4. A) hyperpolarization; b) a quick exit of K + out of the cell

5. A) hyperpolarization; b) gradual exit K +, Na + out of the cell

5) How changes the the action of the excitability of subliminal irritants:

1. Increases

2. Goes Down

3. Do not change

6) In the relative refractory phase: a) how the excitability; b) a fur-ism is the basis of:

1. A) excitability reduced to 0%; b) inactivated sodium channels

2. A) gradually increases excitability; b) recovering the permeability of the sodium channels on

3. A) excitability reduced to 0%; b) inactivated sodium channels

4. A) excitability is increased by 10-20%; b) activated sodium channels

7) What mechanisms underlie the accommodation?

1. Increase the threshold of irritation, decreased Ecr

2. Increase the threshold of irritation, increased Ecr

3. Reducing the threshold of irritation, decreased Ecr

4. Reducing the threshold increase Ecr

8) Indicate: a) how the excitability when cathodically depression; b) that underlies this phenomenon:

1. A) increases; b) an increase in permeability to Na+ ions

2. A) is reduced; b) an increase in permeability to Na+ ions

3. A) is reduced; b) a decrease in permeability to Na+ ions

4. A) increases; b) an increase in permeability to K+

9) What is the basis of changes in excitability at anodically exaltation?

1. Change the threshold depolarization

2. Inactivation of K-channels

3. Activation of Na-channel inactivation channels K

4. Inactivation of Na channels, activation of K-channels

5. Activation of Ca channels and Cl-channels

Physiology sem1 (v3)

Physiology Excitability Quiz

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