Neurons and Action Potentials

Question 1

Layers of membranes and cells that cover blood cells in the brain

Answer 1

Blood-brain barrier

Question 2

Material that can pass through the blood-brain barrier

Answer 2

Water, gases, glucose, amino acids, hydrophobic molecules

Question 3

Material that is blocked by the blood-brain barrier

Answer 3

Bacteria and hydrophilic molecules

Question 4

A burst of electrical activity from a single neuron

Answer 4

Action potential

Question 5

Cells in the brain that provide supporting roles for neurons

Answer 5

Glia cells

Question 6

Type of Glia cells that provide structural support

Answer 6

Astrocytes

Question 7

Type of Glia cells that provide immune defense by consuming and destroying foreign bodies in the brain

Answer 7

Microglias

Question 8

Type of Glia cells that envelop neurons with myelin

Answer 8

Oligodendrocytes

Question 9

Neuroscientist who claimed the brain is made up of small, discrete cells

Answer 9

Ramon Y Cajal

Question 10

Part of neuron that collects info

Answer 10

Dendrites

Question 11

Part of neuron that integrates info

Answer 11

Soma

Question 12

Part of neuron that conducts the neural signal across a long distance

Answer 12

Axon

Question 13

Where neurotransmitters are released to affect other neurons

Answer 13

Synapses

Question 14

Difference in electric potential between two points

Answer 14

Voltage

Question 15

Voltage of a neuron at rest

Answer 15

Resting potential

Question 16

Force in which ions move from high to low

Answer 16

Chemical force

Question 17

Force in which ions repel and attract

Answer 17

Electrical force

Question 18

Part that maintains imbalance of NA and K in a cell

Answer 18

Sodium and Potassium pump

Question 19

African poison that disrupts sodium potassium pump

Answer 19

Ouabain

Question 20

When a neuron gets at least 2 pieces of info, right after the other, in the same spot

Answer 20

Temporal summation

Question 21

When a neuron gets at least 2 piece of info simultaneously at 2 different locations on the dendrites

Answer 21

Spatial summation