The Autonomic Nervous System - Deepstash

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The Autonomic Nervous System

The autonomic system controls aspects of the body that are usually not under voluntary control. The autonomic system is divided into two branches:

  1. Parasympathetic system: It helps maintain normal body functions and conserve physical resources. Once a threat is over, this system will slow the heart rate, slow the breathing, reduce blood flow to muscles, and constrict the pupils.
  2. Sympathetic system: This system prepares the body to expend energy to respond to environmental threats - the flight or fight response.

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The nervous system consists of two parts

  1. The central nervous system (CNS). It includes the brain and spinal cord.
  2. The peripheral nervous system (PNS). It includes all the nerves that branch out from the brain and spinal cord and extends to other parts of the body, including muscles and or...

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The Somatic Nervous System

The somatic system is responsible for transmitting sensory information as well as voluntary movement. The system contains two major types of neurons:

  1. Motor neurons. They carry information from the brain and spinal cord to muscle fibe...

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The main role of the PNS

The PNS's primary role is to connect the CNS to the organs, limbs, and skin. The peripheral nervous system is divided into two parts:

  1. The somatic nervous system. It is responsible for carrying sensory and motor information to and from the CNS.
  2. The a...

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I have a passion for architecture. Always eager to learn new things.

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Panic And The Autonomic Nervous System (ANS)

The Autonomic Nervous System (ANS) region of the brain is activated during a panic attack, and two opposing components get to work as needed:

  1. The Sympathetic Nervous System: Releases adrenaline and other hormones to help with the β€˜fight or flight’ re...

The fear reaction

The fear reaction starts in the brain's amygdala region and spreads through the body to prepare the body for the best defense or flight reaction. Fear also triggers the release of stress hormones and the sympathetic nervous system.

During a dangerous situation, the bra...

What happens during the fight or flight response

What happens during the fight or flight response

In response to acute stress, the body's sympathetic nervous system is activated by the sudden release of hormones.

  • After the threat is gone, it takes between 20 to 60 minutes for the body to return to its pre-arousal levels.

Physical signs...

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