Tag: nervous system of man

Questions Related to nervous system of man

Identify the origin of sympathetic nerve fibres and the location of their ganglia.

zoology nervous system of man major divisions of nervous system introduction to control and coordination neurons and synapses

  1. They arise from thoraco-lumbar region of spinal cord and form ganglia just beside the vertebral column.

  2. They arise from thoraco-cervical region of spinal cord and form ganglia just beside the vertebral column.

  3. They arise from cranio-sacral region of spinal cord and form ganglia very close to effector organ.

  4. They arise from thoraco-lumbar region of spinal cord and form ganglia very close to effector organ

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Correct Option: A
Explanation:
The sympathetic nervous system( also called thoracic-lumber outflow as its preganglionic fibres arise from the thoracic and lumbar region of the spinal cord) consists of two sympathetic nerves or chains running from head to the end of the sacral region, one on each side of the vertebral column.
Each sympathetic chain bears several ganglia called lateral or chain ganglia. some chain ganglia fuse to form three ganglia, in the neck, after which there is a linear series of ganglia in the thoracic and lumbar regions.
So, the correct answer is 'They arise from the thoracolumbar region of spinal cord and form ganglia just beside the vertebral column'.


Neurons are important components of

zoology nervous system of man major divisions of nervous system introduction to control and coordination neurons and synapses

  1. Brain

  2. Central nervous system

  3. Spinal cord

  4. All of the above

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Correct Option: D
Explanation:

Our nervous system is made up of brain, spinal cord, sense receptors and a whole lot of nerves. But all these are ultimately made up of nerve cells or neurons.

Neurons are cells that send and receive electro-chemical signals to and from the brain and nervous system. There are about 100 billion neurons in the brain. 

What would happen to the person if cerebellum of his brain is damaged?

zoology nervous system of man parts of the brain brain and its parts brain

  1. He will lose his memory power

  2. He will not be able to swallow food properly

  3. He will be unable to coordinate and stand properly

  4. He will lose his powers ofvision and hearing

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Correct Option: C
Explanation:

Cerebellum is the  part of the brain which is responsible for balancing the body. It helps in coordination of right and left interpretation done by the central nervous system. When the cerebellum, gets damage the coordination between several movements is lost.

So, the correct answer is 'He will be unable to coordinate and stand properly'

Which part of the human brain controls balance, posture and coordination?

zoology nervous system of man parts of the brain brain and its parts brain

  1. Cerebrum

  2. Cerebellum

  3. Medulla oblongata

  4. Thalamus

  5. Hypothalamus

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Correct Option: B
Explanation:

The cerebellum is a small region at the back of the brain. It is the largest part of hind brain. The cerebellum controls smooth, coordinated movements, helps to maintain muscle tone, posture, and balance.

The brainstem is made up of

zoology nervous system of man parts of the brain brain and its parts brain

  1. Midbrain, Pons, Cerebellum

  2. Midbrain, Pons, Medulla oblongata

  3. Forebrain, Pons, Cerebellum

  4. Cerebellum, Cerebrum, Medulla oblongata

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Correct Option: B
Explanation:

The region of the brain that connects the cerebrum to the spinal cord is called as brainstem. It is made up of midbrain, medulla oblongata and pons. It is a site where many cranial nerves are located. The brainstem is involved in te relay of signals between the spinal cord and brain. It also controls the working of the PNS. Thus the correct answer is option B.

Body coordination is maintained by

nervous system of man major divisions of nervous system introduction to control and coordination neurons and synapses

  1. Circulatory system

  2. Nervous system

  3. Endocrine system

  4. Both B and C

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Correct Option: D

Choose the type of nervous system and type of muscle supplying visceral organs

nervous system of man major divisions of nervous system introduction to control and coordination neurons and synapses

  1. Sympathetic nervous system, voluntary

  2. Sympathetic nervous system, involuntary

  3. Parasympathetic nervous system, involuntary

  4. Both sympathetic and parasympathetic nervous systems, involuntary

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Correct Option: D

Which is correct about spinal cord

biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

  1. Outer grey matter, inner white matter

  2. Outer white matter, inner grey matter

  3. Outer grey matter, inner colourless matter

  4. Grey matter only

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Correct Option: B

The path of passage of stimulus when you accidentally touch a hotplate is?

biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

  1. receptor $\rightarrow$ brain $\rightarrow$ muscles

  2. muscles $\rightarrow$ spinal cord $\rightarrow$ receptor

  3. muscles $\rightarrow$ brain $\rightarrow$ receptor

  4. receptor $\rightarrow$ spinal cord $\rightarrow$ muscles

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Correct Option: D

Destruction of anterior horn cells of spinal cord would result in loss of

biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

  1. Sensory impulses

  2. Voluntary motor impulses

  3. Commissural impulses

  4. Integrating impulses

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Correct Option: B