Lesson 25.4 - Diseases Related to the Nervous System Flashcards
Multiple Sclerosis
it is a disease caused by the progressive destruction of the myelin sheath of the neuron.
The damaged sheath is called ________, which is plaques or hardened scars. If myelin sheaths are damaged it may cause an interference to the transmission of signal from neuron to neuron, causing a “short-circuit” in the conduction of impulses.
sclerosis
Damaged myelin sheaths ______________ the transmission of signal from brain to body causing the loss of motor activity.
slow down or block
The cause of having multiple sclerosis is still unknown but scientists believe it to be an ________________ disease that targets the myelin sheath.
autoimmune
The effects of this disease is death due to the infection produced by the loss of motor activity.
MS
Symptoms include: muscle spasm, tingling in the limbs, weakness of limbs, numbness, visual problems, and degree of memory loss.
MS
Chronic Hydrocephalus
it is a condition characterised by the enlargement of the head due to the gradual increase of serous fluid in the subarachnoid spaces of the brain.
The cause of this may be acquired or congenital.
CH
Effects includes the delay of both physical and mental growth
CH
Symptoms of this include the gradual enlargement of the head, inability to talk and walk, and convulsions and coma.
CH
Alzheirmer’s Disease
it is the degeneration of the brain, which usually affects those in the middle and advanced ages.
Causes of this are linked to a combination of environmental and genetic factors.
Alz
Effects of this disease include memory loss which worsens over time.
Alz
Symptoms include memory loss, difficulty in thinking and planning, and difficulty in performing simple everyday tasks.
Alz
Spinal Meningitis
a condition where there is an inflammation of the meninges of the spinal cord.
