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Let’s have a brief Let’s have a brief discussion on…discussion on…
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
~ ~ STROKE.
~ ~ BRAIN HAEMORRHAGE.
~ ~ MENINGITIS (brain fever).
~ ~ ALZHEIMER’s DISEASE.
The common diseases / disorders in the brain are:
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
Stroke causes both physical and mental crippling.
It is a world wide health problem.
It can occur at any age.
STROKESTROKE
Stroke is a rapidly developed clinical sign of focal disturbances of cerebral function lasting more than 24 hours of leading to death.
{ World Health Organization }
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
A blood clot or Thrombus in the cerebral vessel is called Stroke or Cerebral Thrombosis.
Stroke may be caused due to vascular occlusion, which is a blockage in the cerebral artery.
Occlusion and stroke lead to infarction
Infarction leads to abnormal symptoms in the brain
STROKESTROKE
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
vascular occlusion
Vascular Occlusion is of two types:
Thrombotic
Embolic
Embolus is a portion of the thrombus clot that becomes detached and enters into circulating blood.
An embolus may block the circulation to vital parts leading to the serious consequences {eg:memory loss }
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
Haemorrhage or bleeding of brain
vessels may be caused by hypertension, bursting of blood vessels or due to aneurysm wherein the arterial
wall bulges and forms like a sac like
structure and ruptures later.
Brain Haemorrhage
Haemorrhage and the stroke are also due to vascular malformations
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
risk factors may lead to stroke and brain haemorrhage:
Stenosis (widening of valvular orifice)
Cardiac abnormalities,
Elevated blood lipids,
Hypertension,
Smoking,
Diabetes
Obesity,One can prevent the
risk factors by controlling these risk
factors.
STROKE: risk factors
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
Alzheimer’s Disease.Alzheimer’s Disease.Alzheimer’s disease is otherwise called Chronic Brain Syndrome
Alzheimer’s disease is characterized by the progressive loss of memory followed by general loss of cognitive functions and death.
This disease becomes more and more prevalent among the aged persons.
The aged people beyond 80 almost 50% are affected invariably.Occasionally people develop the disease before 50 or even before the age of 40.
Alzheimer’s disease
is commonly
attributed to genetic
mutation.People with Down
syndrome are invariably
affected with this
disease
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
Alzheimer’s Disease.Alzheimer’s Disease.
Alzheimer’s disease is associated with the atrophy of cerebral cortex.
Neurons undergo degeneration.
In the damaged regions plagues appear (Due to the degeneration of axons and dendrites)
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
Meningitis refers to the inflammatory condition of the brain membranes and the sub-arachnoid space.
This is caused by
bacterial infection,
fungal infection,
viral infection.
Meningitis Meningitis [Brain fever][Brain fever]
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
Clinical symptoms:
Stiffness of the neck,
Photophobia,
Headache,
Irritability,
Feverand other Neurological Symptoms.
Meningitis Meningitis [Brain fever][Brain fever]
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
From T. MADHAVAN, M.Sc., M.L.I.S., M.Ed., M.Phil., P.G.D.C.A., Lecturer in Zoology..
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