Histology - Nervous Tissue

Question 1

What is the function of dendrites

Answer 1

They bring the electrical information to the cell body

Question 2

What is the function of axons

Answer 2

Takes/carries information away from the cell

Question 3

Describe what multipolar is in relation to neuronal morphology

Answer 3

Many dendrites to just one axon

Question 4

Describe what bipolar is in relation to neuronal morphology

Answer 4

One dendrite to one axon

Question 5

Describe what pseudouniploar is in relation to neuronal morphology

Answer 5

Short process gives rise to axon in both directions

Question 6

What is the most common cell in the nervous sytem

Answer 6

Neuron’s support cell, not neurons

Question 7

What nervous tissue contains blue dots under a microscope; and what (normally) surrounds them

Answer 7

1. Axons

2. Myelin sheaths

Question 8

What do blood vessels in nervous tissue look like under a microscope

Answer 8

White sports, similarly sized to axons (don’t contain blue dots)

Question 9

What is a neuropil

Answer 9

A mat of neuronal and glial cell processes that occupies much of the grey matter

Question 10

Name the 4 main type of glial cells

Answer 10

1. Astrocytes
2. Oligodendrocytes
3. Microglia
4. Ependymal cells

Question 11

Describe the roles of astrocytes

Answer 11

1. Support
2. Maintaining the blood-brain barrier
3. Environmental homeostasis

Question 12

Describe the function of oligodendrocytes

Answer 12

Produce myelin in the CNS

Question 13

How fast can some myelinated axons travel

Answer 13

220mph

Question 14

What is the function of microglia

Answer 14

Immune monitoring and antigen presentation

Question 15

What are ependymal cells

Answer 15

Cuboidal/columnar epithelium that lines the ventricles