Peripheral Nervous System

Peripheral Nervous System is a part of nervous system, which work in coordination with central nervous system. The PNS (Peripheral Nervous System) is divided into 2 divisions such as somatosensory nervous system (SNS) and Autonomic Nervous system (ANS).

Somatosensory Nervous System (SNS) :It is also called as sensory nervous system. It contains 2 types of neurons such as somatic neuron and sensory neuron. The somatic neuron shows the efferent neurons functions and is displays voluntary regulation. The sensory neurons shows the afferent neuron that means it sense the signal. It releases the signal in the form of acetylcholine.

Autonomic nervous system : Autonomic nervous system is divided into two parts such as sympathetic nervous system and parasympathetic nervous system. The sympathetic nervous system will work when post ganglion neuron release the hormones epinephrine and nor epinephrine. Therefore the sympathetic nervous system releases the epinephrine or nor epinephrine due to presence of receptors on their membrane. The two types of receptors are present are called as alpha androgenic receptor and beta androgenic receptor.

The parasympathetic nervous system releases acetylcholine, in reverse to this actylcholine gives 2 types of responses such as excitatory response and inhibitory response. Excitatory response present on skeletal muscle whereas inhibitory response are present on glands and heart.

Questions and answers :-

1.) What is peripheral nervous system ?

Answer :- Peripheral Nervous System is a part of nervous system, which work in coordination with central nervous system. The PNS (Peripheral Nervous System) is divided into 2 divisions such as somatosensory nervous system (SNS) and Autonomic Nervous system (ANS).

2.) Explain the SNS.

Answer :- It is also called as sensory nervous system. It contains 2 types of neurons such as somatic neuron and sensory neuron. The somatic neuron shows the efferent neurons functions and is displays voluntary regulation. The sensory neurons shows the afferent neuron that means it sense the signal. It releases the signal in the form of acetylcholine.

3.) Explain the ANS.

Answer :Autonomic nervous system is divided into two parts such as sympathetic nervous system and parasympathetic nervous system. The sympathetic nervous system will work when post ganglion neuron release the hormones epinephrine and nor epinephrine. Therefore the sympathetic nervous system releases the epinephrine or nor epinephrine due to presence of receptors on their membrane. The two types of receptors are present are called as alpha androgenic receptor and beta androgenic receptor.

The parasympathetic nervous system releases acetylcholine, in reverse to this actylcholine gives 2 types of responses such as excitatory response and inhibitory response. Excitatory response present on skeletal muscle whereas inhibitory response are present on glands and heart.

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