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Question 1

Multipolar neuron

Answer 1

one axon, multiple dendrite trees
>
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Question 2

Multipolar interneuron

Answer 2

>

  <  O  <
  < short or no axon that work within a single structure

Question 3

Bipolar neuron

Answer 3

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Question 4

Unipolar neuron

Answer 4

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Question 5

Endoplasmic reticulum

Answer 5

Transportation for chemicals inside the cell
Rough: ribosomes that provide proteins and important for membrane
Smooth: produces lipids, includes Golgi apparatus

Question 6

Golgi apparatus

Answer 6

Responsible for exocytosis (secretes products), lysosomes (contains enzymes that break down substances that are not needed anymore)

Question 7

Axoplasmic transport

Answer 7

Anterograde axoplasmic transport (from soma to terminal buttons) or Retrograde axoplasmic transport (reverse) using Microtubules

Question 8

Oligodendrocyte

Answer 8

Produces myelin sheath for multiple cells

Question 9

Schwann cells

Answer 9

Wraps around one cell giving it a myelin sheath

Question 10

Astrocyte

Answer 10

Provides physical support for neurons and cleans up debris within the brain

Question 11

Action potential

Answer 11

1) Na+ level in cell is kept low and exchanged with K+ using Na+ K+ pumps (3Na+ out for every 2K+ in) maintain resting potential (-70mV)
2) When stimuli reaches threshold, sodium channels (voltage dependent ion channels) open and Na+ rushes in due to diffusion and electrostatic pressure called causing Depolarization, resting potential from -70 mV to +40 mV”
3) Less sensitive voltage dependent potassium channels opens later, K+ leaves cell
When action potential reaches peak, sodium channels close, while potassium channels still open to return potential to normal value,
4) K+ channels close, excess K+ outside the cell causes Hyperpolarization, which diffuses in moments, denying immidiate AP, (called refractory period, where Cl- enters the cell).