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

Sympathetic nerves in mammals develop from

  1. Sacral region

  2. Cervical region

  3. Thoracico-lumbar region

  4. 3rd, 7th, 9th and 10th cranial nerves
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sympathetic nerves emerge from the central nervous system specifically from the thoracic and lumbar regions of the spinal cord, which is why it is called the thoracico-lumbar system.

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

Extension of sympathetic nervous system is 

  1. Adrenal medulla

  2. Adrenal cortex

  3. Pineal

  4. Neurohypophysis
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.
Multiple choice zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

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

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

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

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.

  1. Autonomic; Somatic

  2. Sympathetic; Parasympathetic

  3. Parasympathetic; Sympathetic

  4. Peripheral; Central
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.

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

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

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

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

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

  1. Unaffected

  2. Decreases

  3. Increases

  4. Stop
Reveal answer Fill a bubble to check yourself
C Correct answer
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'
Multiple choice zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

Parasympathetic nervous system develops from region

  1. Thoracolumbar

  2. Craniosacral

  3. Cervical

  4. Lumbar
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.

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

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

  1. prevertebral ganglion

  2. terminal ganglion

  3. sympathetic trunk ganglion

  4. parasympathetic trunk ganglion
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.