Degeneration of the Nervous Tissue: Flashcards
What happens when nervous tissue degenerates?
It leads to a decrease in the brain’s capacity to send and receive nerve impulses.
What are the causes of degeneration of nervous tissue?
• Increase in time taken to react.
• Difficulty in receiving and processing information.
• Decline in short-term memory.
• Decline in verbal capability.
• Reduction in reflexes and movement.
• Effects on senses.
Does the pace of degeneration vary between people?
Yes, the pace of degeneration varies between older people.
What can cause similar symptoms to nervous tissue degeneration?
Illnesses such as Alzheimer’s disease.
Can the brain repair itself?
Yes, the brain can produce new brain cells (e.g., stroke patients can learn to speak again).
Can new connections between nerve cells develop?
Yes, new connections between nerve cells can develop.
How can the degeneration of nervous tissue be slowed?
Through exercising, not smoking, and cognitive activity.
What happens when there is a loss of neurones in the brain?
It can lead to degenerative diseases such as Parkinson’s disease.
What part of the brain does Parkinson’s disease affect?
It affects the substantia nigra, an area of the brain that contains dopamine-producing cells.
What happens when neurones in the substantia nigra die?
The production of dopamine decreases, which affects movement and coordination.
What are the physical effects of Parkinson’s disease?
Tremor: Uncontrollable shaking, beginning in the hand and arm.
• Mobility issues: Slowness of movement and muscle stiffness.
What are the cognitive effects of Parkinson’s disease?
• Depression.
• Anxiety.
• Impairment in thinking and problem-solving.
