Introduction of Nervous System

• Let’s Discuss Introduction of Nervous System in easy points:
• The nervous system is a complex network of neurons that transmit signals throughout the body, coordinating and controlling a wide range of functions, from voluntary movements to involuntary processes like homeostasis and internal organ regulation.

Main Divisions:

1. Central Nervous System (CNS):

• Composed of the brain and spinal cord.
• Acts as the primary control center, processing sensory information, generating thoughts and emotions, and coordinating movements.

2. Peripheral Nervous System (PNS):

• Consists of all nerves outside the CNS, connecting it to the rest of the body.
• Subdivisions:

a) Somatic Nervous System:

• Controls voluntary movements and perceives external sensations (touch, pain, temperature).
• It includes sensory neurons (body to CNS) and motor neurons (CNS to muscles).

b) Autonomic Nervous System (ANS):

• Regulates involuntary processes and internal organ functions. It has two parts:
  • Sympathetic Nervous System: Activates the “fight or flight” response during stress.
  • Parasympathetic Nervous System: Promotes the “rest and digest” state, helping the body relax and conserve.

Thank you for reading from Firsthope's notes, don't forget to check YouTube videos!