PERIPHERAL NERVOUS SYSTEM | CLASSIFICATION  | FUNCTION | PNS | PART-10 | HUMAN ANATOMY & PHYSIOLOGY
Channel: PHARMAROCKS THE WAY OF SUCCESS
Date: 2020-12-03

NERVOUS SYSTEM
The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body.
The nervous system is involved in receiving information about the environment around us (sensation) and generating responses to that information (motor responses). 

CLASSIFICATION OF NERVOUS SYSTEM
The nervous system is classified into the central and peripheral nervous system. 
The central nervous system (CNS) consists of the brain and spinal cord, leaving everything else in the peripheral nervous system (PNS).

CNS: THE BRAIN
CNS: SPINAL CORD & VERTEBRAL COLUMN

PERIPHERAL NERVOUS SYSTEM
The peripheral nervous system (PNS) is the division of the nervous system containing all the nerves that lie outside of the central nervous system (CNS). 
The primary role of the PNS is to connect the CNS to the organs, limbs, and skin.

EXCHANGE OF MESSAGES BETWEEN CNS TO PNS & PNS TO CNS

SPINAL NERVE 31 PAIRS
8 cervical, 
12 thoracic, 
5 lumbar, 
5 sacral
1 coccygeal. 
Each pair connects the spinal cord with a specific region of body. 
Near the spinal cord each spinal nerve branches into two roots.

CRANIAL NERVES 12 PAIR
Their functions are usually categorized as being either sensory or motor.
Sensory nerves are involved with your senses, such as smell, hearing, and touch. 
Motor nerves control the movement and function of muscles or glands.

I. Olfactory nerve,
II. Optic nerve,
III. Oculomotor nerve,
IV. Trochlear nerve,
V. Trigeminal nerve,
VI. Abducens nerve,
VII. Facial nerve,
VIII. Vestibulocochlear nerve,
IX. Glossopharyngeal nerve,
X. Vagus nerve,
XI. Accessory nerve,
XII. Hypoglossal nerve,

PERIPHERAL NERVOUS SYSTEM CLASSIFICATION
The peripheral nervous system (PNS) consists of all the nervous tissue that lies outside of the central nervous system (CNS). 
Its main function is to connect the CNS to the rest of the organism. 
The tissues that make up the PNS are nerves and ganglia

The peripheral nervous system consists of the nerves that branch out from the brain and spinal cord. 
These nerves form the communication network between the CNS and the body parts. 
The peripheral nervous system is further subdivided into the somatic nervous system and the autonomic nervous system.

FUNCTION OF PNS PERIPHERAL NERVOUS SYSTEM
Its main function is to connect the CNS to the rest of the organism. 
The tissues that make up the PNS are nerves and ganglia.
The main function of the PNS is to connect the CNS to the limbs and organs, essentially serving as a relay between the brain & spinal cord and the rest of the body.

NERVOUS SYSTEM FULL CHAPTER
https://www.youtube.com/playlist?list=PLcoVcyIegg_zVBoBpWW9whynn7AIOPXSe

#NERVOUSSYSTEM
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