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Parkinson's disease (Characterized by tr...

Parkinson's disease (Characterized by tremors and progressive rigidity of limbs) is cause by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter

A

acetylcholine

B

norepinephrine

C

dopamine

D

epinephrine

Text Solution

Verified by Experts

The correct Answer is:
B
dopamine
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Parkinson's diseases (characterised by tremorse and progressive rigidity of limbs) is caused by degeneration of brain neutrons that are involved in movement control and make use of neurotransmitter

Parkinson disease is a neurodegenerative disease, caused by deterioration of neurons. It is due to deficiency of which neurotransmitter?

Column I some disorders associated with brain. Column II the causes for these disorders. Match the two column and identify the correct option from those given: {:("Column-I","Column-II"),(A" Epilepsy", p" Degeneration of neurons in the cerebral cortex"),(B" Alzheimer's disease", q" Irregular electrical discharge in the neurons"),(C" Parkinson's disease", r" Decreased production of acetylcholine"),(D" Huntington's chorea", s" Regeneration of dopamine releasing neurons"),(,t" Formation of blood dots in the brain"):}

Read the following statements. (a) Optic lobes in humans are represented by two inferior colliculi of mid-brain. (b) Destruction of GABA secreting neurons leads to Parkinson's while Huntington's chorea is caused due to degeneration of dopamine secreting neurons. (c) Human brain is greatly convoluted, consisting of numerous gyri and sulci. (d) Amygdala is concerned with regulating moods, especially anger and rage.

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. Nowadays it is possible to reduce the loss caused by pests and harmful bacteria

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. The farmers today can also select seeds

CENGAGE BIOLOGY-NERVOUS SYSTEM AND SENSE ORGANS : CONTROL AND CO-ORDINATION-CONSOLIDATED EXERCISE
  1. Which gives an incorrect function for the structure?

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  2. Which is a reflex action?

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  3. Parkinson's disease (Characterized by tremors and progressive rigidity...

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  4. Junction between dendrites and axon is known as

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  5. Which of the following is not an involuntary action?

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  6. Which one of the following controls the peristaltic movements of alime...

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  7. All the voluntary actions of our body are controlled by:

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  8. The part of brain which controls the involuntary actions such as heart...

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  9. The part of brain which takes part in regulating respiration in the hu...

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  10. In a neuron, the conversion of electrical signal to a chemical signal ...

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  11. The gustatory receptors of our body are in one of the following organs...

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  12. The olfactory receptors in humans are located in:

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  13. The contraction of pupil of the eye in the presence of bright light is...

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  14. Third ventricle of brain is also known as

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  15. The number of cranial nerves in a mammal including man is

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  16. Purely motor nerve is

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  17. The second cranial nerve is

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  18. The cranial nerves which can regulate heart beat

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  19. The brain by origin is

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  20. Second cranial nerve supplies

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