Tag: nervous system of man

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Questions Related to nervous system of man

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

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

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.


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

Neurons are important components of

  1. Brain

  2. Central nervous system

  3. Spinal cord

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
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. 

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

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

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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'

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

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

  1. Cerebrum

  2. Cerebellum

  3. Medulla oblongata

  4. Thalamus

  5. Hypothalamus
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

The brainstem is made up of

  1. Midbrain, Pons, Cerebellum

  2. Midbrain, Pons, Medulla oblongata

  3. Forebrain, Pons, Cerebellum

  4. Cerebellum, Cerebrum, Medulla oblongata
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Body coordination is maintained by

  1. Circulatory system

  2. Nervous system

  3. Endocrine system

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Body coordination in complex organisms is managed by the nervous system (fast, electrical signals) and the endocrine system (slower, chemical signals via hormones). Both systems work together to maintain homeostasis.

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

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

  1. Sympathetic nervous system, voluntary

  2. Sympathetic nervous system, involuntary

  3. Parasympathetic nervous system, involuntary

  4. Both sympathetic and parasympathetic nervous systems, involuntary
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The autonomic nervous system, which includes both the sympathetic and parasympathetic divisions, regulates involuntary functions of visceral organs and involuntary muscles (smooth muscles).

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

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

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This describes a reflex arc. The stimulus is detected by a receptor, transmitted to the spinal cord via sensory neurons, and then to the muscles via motor neurons to trigger a response.

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

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

  1. Sensory impulses

  2. Voluntary motor impulses

  3. Commissural impulses

  4. Integrating impulses
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The anterior horn of the spinal cord contains the cell bodies of motor neurons. Damage to these cells disrupts the transmission of signals to muscles, resulting in the loss of voluntary motor control.