Tag: nervous system of man

Questions Related to nervous system of man

Arbor vitae is composed of

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

  1. Grey matter

  2. White matter

  3. Neuroglia cells

  4. All the above

Show answer
Correct Option: D
Explanation:

White matter with patches of grey matter. Neuroglia cells are connective tissue cells of central nervous system. 

Brain and spinal cord are

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

  1. Effectors

  2. Receptors

  3. Nervous organs

  4. Intermediary neurons

Show answer
Correct Option: C

The bundle of axons in the central nervous system is known as

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

  1. Nerve

  2. Ganglion

  3. Tract

  4. Neuron.

Show answer
Correct Option: C
Explanation:

In the central nervous system the nerve fibres are organized in bundles called tracts. Ascending tracts carry impulses along the spinal cord toward the brain, and descending tracts carry them from the brain or higher regions in the spinal cord to lower regions.  So, the correct answer is option C.

Choose the correct answer from the alternatives given.
If the nervous system, after receiving information, interprets the information and decides how it might  respond, it is relying on the function.

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

  1. Motor

  2. Sensory

  3. Integrative

  4. Responsive

Show answer
Correct Option: C
Explanation:

The nervous system is a highly integrated system. It has three overlapping functions based on sensory input, integration, and motor output. At a more interactive level, the primary function of the nervous system is to control and communicate information throughout the body.

so, the correct option is 'Integrative'.

A bundle of fibres found outside the central nervous system is known as a

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

  1. Meninx

  2. Nerve

  3. Dendrite

  4. Tract

Show answer
Correct Option: B
Explanation:

Bundles of fibres or axons, in the peripheral nervous system, are called nerves, and bundles of afferent fibres are known as sensory nerves. An efferent nerve fibre conducts signals from a motor neuron in the central nervous system to muscles.

So, the correct option is 'Nerve'.

Which of the following is the most complete list of animals that have both a central nervous system. (CNS) and a peripheral nervous system (PNS)?

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

  1. Hydra, planarian, earthworm, rabbit, human

  2. Planarian, earthworm, rabbit, human

  3. Earthworm, rabbit, human

  4. Rabbit, human

Show answer
Correct Option: C
Explanation:

The CNS contains the brain and the spinal cord. Everything else but the CNS it is known as the PNS. The PNS contains nerves, which leave the brain and the spinal cord and travel to all the parts of the body.

So, the correct option is 'Earthworm, rabbit, human'.

How many pairs of cranial nerves are mixed nerves?

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

  1. $3$

  2. $5$

  3. $4$

  4. $6$

Show answer
Correct Option: C
Explanation:

$4$ pairs of cranial nerves are mixed nerves. These are trigeminal, facial, glossopharyngeal and vagus nerves.

Which part of the brain contains such an area which is neither clearly sensory nor motor in function?

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

  1. Medulla

  2. Cerebral cortex

  3. Grey matter of cerebrum

  4. Both A and C

Show answer
Correct Option: B
Explanation:

  • The cerebral cortex of the brain has three regions of function, namely Sensory, motor and association areas. 
  • This association area does not belong either of the primary sensory or motor regions since its function is associative.
  • The main function of these association regions is to provide a perpetual understanding of the world. it helps in effective interaction, abstract thinking, and language. 
  • These association regions are present in the form of an interwoven network.

So the correct option is 'Cerebral cortex'.

In which lobe of the cerebrum are the visual centres located?

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

  1. Frontal lobe

  2. Parietal lobe

  3. Temporal love

  4. Occipital lobe

Show answer
Correct Option: D
Explanation:

The visual system is the part of the central nervous system which gives organisms the ability to process visual detail as sight, as well as enabling the formation of several non-image photo response functions. In cerebrum, the visual centres are located on the occipital lobe.

So, the correct option is 'Occipetal lobe'.

Rapid integration of the functional activities in human is achieved by 

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

  1. Nervous system

  2. Endocrine system

  3. Blood

  4. Muscular system

Show answer
Correct Option: A
Explanation:

The body's communication systems are the endocrine and nervous systems. At an integrative level, the primary function of the nervous system is to control many of the functions of our bodies and minds. It does this by extracting information from the environment using sensory receptors, sending signals that encode this information into the central nervous system, processing the information to determine an appropriate response, and sending output signals to muscles or glands to initiate the response. The nervous system responds rapidly to short-term changes. By nature, these hormones are synthesized at a distance from their target cells and travel through the bloodstream or intercellular fluid until they reach these cells. Upon reaching their target cell, the hormone acts on the cell to increase or decrease the expression of specific genes. This process takes significantly longer than that of the nervous system, as endocrine hormones must first be synthesized, transported to their target cell, and enter or signal the cell. Then, the target cell must go through the process of transcription, translation, and protein synthesis before the intended action of the hormone can be seen .