Nervous System Cells

Question 1

What structures does the CNS consist of?

Answer 1

Brain and Spinal Cord

Question 2

What structures does the PNS consist of?

Answer 2

Cranial and Spinal Nerves

Question 3

What division of the nervous system consists of all the incoming sensory pathways?

Answer 3

Afferent division

Question 4

What division of the nervous system consists of all the outgoing motor pathways?

Answer 4

Efferent division

Question 5

What effectors do the ANS pathways carry information to?

Answer 5

visceral/autonomic effectors

Question 6

What are examples of visceral effectors?

Answer 6

smooth muscles
cardiac muscles
glands
adipose tissue

Question 7

What are the two division of the ANS?

Answer 7

Sympathetic and Parasympathetic

Question 8

What are the two main types of cells that compose the nervous system?

Answer 8

neurons and glia

Question 9

Which of the two main types of cells that compose the nervous system are excitable and conduct impulses?

Answer 9

Neurons

Question 10

Which of the two main types of cells that compose the nervous system provide support?

Answer 10

Glia

Question 11

Which cells of the nervous system are more prone to benign and malignant tumors?

Answer 11

Glia - they retain their capacity for cell division throughout adulthood

Question 12

What are the five types of glia?

Answer 12

Astrocytes
Microglia
Ependymal 
Oligodendrocytes
Schwann Cells

Question 13

Which of the types of glia cells can be found in the PNS?

Answer 13

Schwann - the others are found in the CNS

Question 14

What are the largest and most numerous types of glia?

Answer 14

Astrocytes

Question 15

Which type of glia helps form the blood-brain barrier?

Answer 15

Astrocytes

Question 16

Which type of glia carry on phagocytosis?

Answer 16

Microglia

Question 17

What type of glia resemble epithelial cells and form thin sheets that line fluid-filled cavities in the brain and spinal cord?

Answer 17

Ependymal cells

Question 18

What type of glia produce the fatty myelin sheath around nerve fibers in the CNS?

Answer 18

Oligodendrocytes

Question 19

What type of glia support nerve fibers and sometimes form a myelin sheath around peripheral nerves?

Answer 19

Schwann cells

Question 20

What term describes the microscopic gaps between adjacent Schwann cells that make up the myelin sheath?

Answer 20

nodes of Ranvier

Question 21

What term describes the Schwann cells nucleus and cytoplasm as they are squeezed to the perimeter as the Schwann cell wraps around an axon of a neuron?

Answer 21

neurilemma

Question 22

What is another term used to describe Schwann cells?

Answer 22

neurolemmocytes

Question 23

What are the two major layers of a Schwann cell that is wrapped around the axon of a neuron?

Answer 23

Neurilemma and Myelin sheath

Question 24

What parts does a neuron consist of?

Answer 24

Cell body(perikaryon)
Axon
Dendrites

Question 25

What part of the neuron receive stimuli and conduct electrical signals toward the cell body?

Answer 25

Neurons

Question 26

What is the tapered portion of a neuron’s cell body?

Answer 26

axon hillock

Question 27

What are the distal ends of axon branches?

Answer 27

telodendria

Question 28

Whats contained in synaptic knobs?

Answer 28

mitochondria and vesicles