Exam 2 Slide show Nervous Tissue (pt1)

Question 1

What are the two organizational levels of the nervous system?

Answer 1

CNS and PNS

Question 2

What composes the CNS?

Answer 2

Brain and spinal cord

Question 3

What composes the PNS?

Answer 3

Crainal nerves, spinal nerves, and peripheral nerves

Question 4

What is an association of neuronal axons in the peripheral nervous system?

Answer 4

A nerve

Question 5

What is a group of neuronal cell bodies in the peripheral nervous system?

Answer 5

A ganglion

Question 6

What is an association of neuronal axons in the central nervous system?

Answer 6

Tract

Question 7

What is an association of nerve cell bodies in the central nervous system?

Answer 7

Nucleus

Question 8

What are cells that possess electrical excitability?

Answer 8

Neurons

Question 9

What are cells of the nervous system that support, nourish, and protect the neurons?

Answer 9

Neurogila

Question 10

Compare the number of neurons with the number of neuroglial cells.

Answer 10

There are more neuroglia than neurons.

Question 11

How long can some axons be?

Answer 11

3 feet long

Question 12

Which part of the neuron is the receiving portion?

Answer 12

Dendrites

Question 13

Which part of the neuron propagates impulses to another neuron, muslce, or nerve?

Answer 13

Axon

Question 14

What do axons contain?

Answer 14

• Mitochondria
• Microtubules
• Neurofibrils

Question 15

Does protein synthesis occur in the axon?

Answer 15

No, because it does not contain rough endoplasmic reticulum

Question 16

What are the two types of axonal transport? and What is the directionality of each of the two types?

Answer 16

Slow axonal transport - One-way only

Fast axonal transport - Two-way transport

Question 17

What do the axonal transports move?

Answer 17

Organelles and materials that are used to form axolemma membranes, synaptic end bulbs, and synaptic vesicles.

Question 18

What are the three types of neurons?

Answer 18

Multipolar, Bipolar, and Unipolar

Question 19

Which neuron is known as the “type” neuron?

Answer 19

Multipolar

Question 20

Where are multipolar neurons found?

Answer 20

the brain and spinal cord, (motor neurons)

Question 21

Where are bipolar neurons found?

Answer 21

In special sensory organs

Question 22

Where are unipolar neurons found?

Answer 22

1. Meisners corpuscle
2. pacinian corpuscle
3. Merkel cells and discs
4. Nociceptor

(PNS)

Question 23

What are GABAergic neurons of the cerebellar cortex, and constitute the sole output of all motor coordination from the cerebellar cortex?

Answer 23

Purkinje cells (CNS)

Question 24

What are the primary neural cell types in the corticospinal tract, and are involved in cognition in the prefrontal cortex?

Answer 24

Pyramidal neurons (CNS)

Question 25

What are the neuroglia cells of the CNS?

Answer 25

• Astrocytes
• Oligodendrocytes
• Microglia
• Ependymal cells

Question 26

What are the neuroglia cells of the PNS?

Answer 26

• Schwann cells (neurolemmocytes)

- Satellite cells