Nervous System II

Question 1

Neuroglial Cells

Answer 1

Supporting Cells for neurons

Question 2

Supporting Cell - CNS

Answer 2

Ependymal Cell

Astrocyte

Oligodendrocyte

Microglial Cell

Question 3

Ependymal Cell

Answer 3

Cuboidal or columnar cells that line the various portions of the brain and spinal cord

Question 4

Astrocyte

Answer 4

Serves as the framework for the CNS

Question 5

Microglial Cell

Answer 5

are neuroglia in the CNS that become mobile and phagocytic in response to inflammation. Migrate to areas damaged by infection, trauma, or stroke and perform phagocytosis.

Question 6

Oligodendrocytes

Answer 6

are the myelinated cells of the CNS. They don’t look any different shape wise or morphologically.

Question 7

Interneurons

Answer 7

Nerve Cell that connects other nerve cells together

Question 8

Nerve Physiology

Answer 8

Cation: Positive Charge Ion K
Anion: Negatively Charged Ion Cl

Question 9

Polarized Membrane

Answer 9

Positive Charge outside, negative charge inside the cell

Question 10

3 Things involved in generating polarized membrane

Answer 10

1. Sodium Potassium Pump
2. Na/K ion leak channels
3. Negatively charged protein molecules

Question 11

Transmembrane or Resting Potential

Answer 11

Difference in charge between the inside and the outside of the cell membrane.

Question 12

How to depolarize the cell membrane

Answer 12

Any stimulus allowing ions to pass freely through the cell membrane to equal out the charges that cell membrane.

Question 13

Chemically Regulated ion channels

Answer 13

Open and close when NT bind to them, causing a local depolarization of the nerve cell membrane.

Question 14

Where are Voltage Regulated Ion Channels?

Answer 14

Located on the Axon

Question 15

Depolarization Threshold

Answer 15

Local stimulus strong enough to cause a opening of the voltage regulated ion gates.

Question 16

Action Potential

Answer 16

Is the depolarization of the cell membrane which travels like a wave down the axon.