Human Physiology Test 1

1.Depolarization corresponds to which potential change with an influx (entry) of Na+?

• -70 mV to +30 mV

• -70 mV to +30 mV

• c.     +30 mV to -70 mV

• d.     -90 mV to -70 mV

2. 2. Both the nervous system and endocrine system play important roles in communication in the body

• True

• False

3. 3. There is more neuroglia than neurons in the nervous tissue

• True

• False

4. If the threshold potential of -55mV is reached, no action potential is created

• True

• False

5. 5. The transmission of nerve impulses is carried out according to cell body → axon → dendrites

• True

• False

6. 6. What is the main function of homeostasis in cellular metabolism?

• Produce energy

• Produce energy

• Maintain the balance of anabolic and catabolic activities

• None of the above

7. Organs:

• An organ can perform the function of another organ

• Lungs allow exchange of air because of the presence of cardiac muscle cells in its structure

• What a structure does depends on its specific form

• All the above

8. What is the definition of physiology?

• The study of the structures of organs and tissues

• The study of the functions that ensure the maintenance of life in living organisms

• The study of interactions between organisms and their environment

• The study of diseases and disorders of the human body

9. What is the definition of selective membrane permeability?

• The ability of the membrane to allow certain molecules to pass and not others

• The ability of the membrane to change shape depending on the environment

• The ability of the membrane to repair itself in the event of damage

• The ability of the membrane to communicate with other cells

10. Neuroglial cells:

• Are non-excitable cells

• Are support cells for the neurons

• Can regenerate and divide

• All the answers are correct