2.6 Nervous System Injury and Disease Part 2

Question 1

What is a CT scan?

Answer 1

scan that uses x-ray technology to take a visual cross section of the brain

Question 2

What are the two types of strokes?

Answer 2

ischemic
hemorrhagic

Question 3

What is an ischemic stroke?

Answer 3

due to a blockage such as one caused by a clot or fat deposit

Question 4

What is a TIA?

Answer 4

transient ischemic attack

Question 5

When does a TIA occur?

Answer 5

when a small clot causes a temporary block in blood flow but then dissolves

Question 6

What is a hemorrhagic stroke?

Answer 6

occurs due to a brain bleed when a blood vessel in the brain ruptures

Question 7

What is often a result of a severe stroke?

Answer 7

death

Question 8

If a person survives a stroke what are the common symptoms?

Answer 8

paralysis
cognitive deficits
speech problems
emotional difficulties
pain

Question 9

What is neural plasticity?

Answer 9

when damages neurons in the surrounding areas after a stroke sprout new branches that spread into the injured area

Question 10

What is dementia?

Answer 10

general term for all brain disorders with memory deficits

Question 11

What is Alzheimers?

Answer 11

progressive degenerative disease of the brain that results in mental decline until the body can no longer control bodily functions

Question 12

What is the cause of Alzheimers disease?

Answer 12

structural changes in the brain/cerebral cortex

Question 13

What is the physiological cause of Alzheimers?

Answer 13

plaques form and entangle the dendrites within the brain preventing neurons from firing

Question 14

What does lack of neural firing lead to?

Answer 14

cell death

Question 15

What are symptoms of early stages of Alzheimers?

Answer 15

difficulty remembering newly learned information

Question 16

What are symptoms of later stages of Alzheimers?

Answer 16

lack of basic memory skills
disorientation
mood and behavior changes
difficulty speaking, swallowing, and walking

Question 17

What is Lou Gehrig s disease also known as?

Answer 17

amyotrophic lateral sclerosis

Question 18

What is ALS?

Answer 18

rare neuromuscular conditions that involves progressive destruction of ventral horn motor neurons

Question 19

What are the symptoms of ALS?

Answer 19

paralysis
loss of ability to speak, swallow, and breathe

Question 20

What causes paralysis?

Answer 20

localized damage to the spinal cord or spinal nerve roots