Chapter 1.2 (page 5)

Question 1

There are 2 types of cells that are found in the nervous system.

Answer 1

Neurons

Glia Cells (Neuroglia)

Question 2

What are the three parts of a neuron?

Answer 2

Dendrites

Cell Body

Axon

Question 3

What are the 3 functional classifications of neurons?

Answer 3

Sensory (Afferent)

Motor (Efferent)

Interneuron (Central or Connecting)

Question 4

What are 4 types of the Glia cells (neuroglia)?

Answer 4

Astrocytes

Microglia

Oligodendrocytes

Ependymal cells

Question 5

These type of neuroglia are the most abundant of the glia cells. They anchor capillaries to neurons and help form the blood-brain barrier.

What is this type of glia cells called?

Answer 5

Astrocytes

Question 6

Which type of glia cells hold nerve fibres together and form myelin sheaths on axons in the CNS?

Answer 6

Oligodendrocytes

Question 7

What is this selective barrier that separates the blood tissue and the nervous tissue against harmful chemicals that might be in the blood?

This barrier also keeps some helpful drugs from gaining access to the brain in order to deal with harmful diseases.

Answer 7

Blood-brain Barrier

Question 8

Where are the interneurons located?

Answer 8

Brain or Spinal cord

Question 9

They are the structural unit of the nervous system. They conduct messages in the form of impulses from one part to another.

Answer 9

Neurons

Question 10

__________ are the input regions of a neuron. They conduct impulses towards the cell body of a neuron.

Answer 10

Dendrites

Question 11

The _______ of the neuron is also called the soma. It contains a nucleus and most other organelles except for centrioles.

Answer 11

Cell body

Question 12

This part of a neuron conducts impulses away from the cell body.

Answer 12

Axon

Question 13

_______: Conduct impulses to the spinal cord and brain from peripheral parts of the body.

Answer 13

Sensory Neuron (Afferent)

Question 14

________: Conduct impulses away from the brain and spinal cord.

Answer 14

Motor Neuron (Efferent)

Question 15

___________: Conduct impulses from sensory neurons to motor neurons.

Answer 15

Interneuron (central or connecting)

Question 16

_____________ : Supporting cells that do not specialize in transmitting impulses. Instead
they help protect and hold the functional neurons together.

Answer 16

Glia cells (neuroglia)