Tag: components of nervous system

Questions Related to components of nervous system

One of the examples of the action of the autonomous nervous systems

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Pupillary reflex

  2. Swallowing of food

  3. Peristalsis of the intestines

  4. Knee-jerk response

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Correct Option: A
Explanation:

Pupillary diameter, which is primarily under the control of the autonomous nervous systems.

So, the correct option is 'Pupillary reflex'.

Extension of sympathetic nervous system is 

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Adrenal medulla

  2. Adrenal cortex

  3. Pineal

  4. Neurohypophysis

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Correct Option: A
Explanation:
Sympathetic nervous system is a division of autonomous nervous system (ANS). ANS has two parts, sympathetic and parasympathetic, both of which are antagonistic to each other in effects. Sympathetic nervous system produces effects on body in response to epinephrine or adrenaline hormone secreted from adrenal medulla. Adrenaline is known as emergency hormone and induces fight or flight response in body whenever homeostasis of body is disturbed.
So, the correct answer is 'Adrenal medulla'.

Choose the correct answer from the alternatives given.
Neurons m the autonomic nervous system include

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. two motor neurons and one ganglion

  2. one motor neuron and two ganglia

  3. two motor neurons and no ganglia

  4. two motor neurons and two ganglia

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Correct Option: A
Explanation:

Motor neurons of the autonomic nervous system are found in autonomic ganglia. The activity of autonomic ganglionic neurons is modulated by preganglionic neurons located in the central nervous system.

So, the correct option is 'two motor neurons and one ganglion'.

Overall nerves slow down the body and divert energy to digestion and other basic housekeeping tasks; and nerves slow down housekeeping tasks and increase overall activity, in times of heightened awareness or excitement.

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Autonomic; Somatic

  2. Sympathetic; Parasympathetic

  3. Parasympathetic; Sympathetic

  4. Peripheral; Central

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Correct Option: C
Explanation:

The parasympathetic nervous system decreases respiration and heart rate and increases digestion. Stimulation of the parasympathetic nervous systems results in the construction of pupils. Decrease heart rate and blood pressure. And reverse goes for sympathetic.

So, the correct option is 'Parasympathetic, sympathetic'.

Parasympathetic and sympathetic nerves, to bring about minor adjustments in internal organ activity

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. service entirely different internal organs

  2. work antagonistically, most often

  3. come into play only during a fight-flight response

  4. none of the above

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Correct Option: B
Explanation:

The parasympathetic nervous system decreases respiration and heart rate and increases digestion. Stimulation of the parasympathetic nervous systems results in the construction of pupils. Decrease heart rate and blood pressure.

So, the correct option is 'Work antagonistically, most often'.

If parasympathetic nerve of the human is cut then heart beat -

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Unaffected

  2. Decreases

  3. Increases

  4. Stop

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Correct Option: C
Explanation:
The parasympathetic nerve with spinal ganglionic nerves mediates the lowering of the heart rate. So if the parasympathetic nerve of human is cut or damaged it will result in an increase of heart rate which will result in an increase in heartbeat per minute.
So, the correct answer is 'Increase'

Parasympathetic nervous system develops from region

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Thoracolumbar

  2. Craniosacral

  3. Cervical

  4. Lumbar

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Correct Option: B
Explanation:

The parasympathetic nervous system differs from the sympathetic nervous system in origin because the parasympathetic nervous system develops both in the brain and spinal cord while the sympathetic nervous system only develops in the spinal cord. The parasympathetic nervous system originates from the sacral region of the spinal cord and cranial nerves of III, VII, IX, and X. So, the development region is called craniosacral.

Hence, the correct answer is 'Craniosacral'.

The autonomic ganglion, which houses the synapse for the Parasympathetic division of the autonomic nervous system, is the 

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. prevertebral ganglion

  2. terminal ganglion

  3. sympathetic trunk ganglion

  4. parasympathetic trunk ganglion

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Correct Option: B
Explanation:

Motor neurons of the autonomic nervous system are found in autonomic ganglia. The activity of autonomic ganglionic neurons is modulated by preganglionic neurons located in the central nervous system.

So, the correct option is 'terminal ganglion'.

Autonomic nervous system controls

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Reflex action

  2. Sense organs

  3. Internal organs

  4. Skeletal muscle

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Correct Option: C
Explanation:
The autonomic nervous system controls internal organs. It is responsible for the maintenance and regulation of internal environment by controlling automatic activities of the internal body organs. It regulates the functions of those organs which are not under the control of will (involuntary functions) such as circulatory, respiratory systems, involuntary muscles and visceral organs. So, the correct answer is option C.

Which of the following is not a sympathetic effect?

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Increased blood pressure

  2. Increased storage of glycogen from glucose

  3. Increased heart rate

  4. Increased constriction of the blood vessels

Show answer
Correct Option: B
Explanation:

The parasympathetic nervous system decreases respiration and heart rate and increases digestion. Stimulation of the parasympathetic nervous systems results in the construction of pupils. Salivation, decrease heart rate and blood pressure.

So, the correct option is 'Increased storage of glycogen from glucose'.