6.1.2.2 Autonomic Nervous System

• What is the Autonomic Nervous System (ANS)?

  Subdivision of the Peripheral Nervous System
• The ANS regulates involuntary processes such as heart rate, digestion, breathing, and gland secretions
• What does the Sympathetic Nervous System prepare the body for?

  "Fight or flight" response
• The two divisions of the ANS work in opposition to maintain homeostasis.
• Match the division of the ANS with its primary function:

  Sympathetic Nervous System ↔️ Activates "fight or flight"

  Parasympathetic Nervous System ↔️ Promotes "rest and digest"
• When triggered, the Sympathetic Nervous System increases heart rate, breathing rate, and pupil dilation
• What happens to digestion when the Sympathetic Nervous System is activated?

  Inhibited
• Which hormone is released by the Sympathetic Nervous System?

  Norepinephrine
• The Sympathetic Nervous System increases blood flow to critical organs during stress.
• The Parasympathetic Nervous System promotes "rest and digest" and maintains bodily homeostasis
• Effects of the Parasympathetic Nervous System on bodily functions:

  1️⃣ Heart rate slows down

  2️⃣ Breathing rate decreases

  3️⃣ Digestion is stimulated

  4️⃣ Pupils constrict

  5️⃣ Sweat glands are deactivated
• Which neurotransmitter is released by the Parasympathetic Nervous System?

  Acetylcholine
• The Parasympathetic Nervous System ensures the body can switch between high-energy states and periods of relaxation.
• What are the two divisions of the Autonomic Nervous System that maintain homeostasis?

  Sympathetic and Parasympathetic
• The Sympathetic Nervous System and Parasympathetic Nervous System are two divisions of the Autonomic Nervous System that work in opposition to maintain homeostasis
• The Sympathetic Nervous System decreases heart rate.

  False
• Which division of the Autonomic Nervous System stimulates digestion?

  Parasympathetic
• The Sympathetic Nervous System causes pupils to constrict.

  False
• The Parasympathetic Nervous System deactivates sweat glands
• What neurotransmitter is released by the Sympathetic Nervous System?

  $Norepinephrine$
• The Autonomic Nervous System is part of the Central Nervous System.

  False
• Divisions of the Autonomic Nervous System and their functions

  1️⃣ Sympathetic Nervous System: Activates "fight or flight"

  2️⃣ Parasympathetic Nervous System: Promotes "rest and digest"
• The Sympathetic Nervous System releases norepinephrine, which leads to vasoconstriction
• The Parasympathetic Nervous System slows down heart rate.
• What neurotransmitter is released by the Parasympathetic Nervous System?

  $Acetylcholine$
• What role does the parasympathetic nervous system play in conserving energy and maintaining homeostasis?

  "Rest and digest"
• The key neurotransmitter released by the parasympathetic nervous system to enhance digestion and relaxation is acetylcholine
• The parasympathetic nervous system promotes "rest and digest" functions in the body.
• Which divisions of the autonomic nervous system work in opposition to maintain homeostasis?

  Sympathetic and parasympathetic
• The sympathetic nervous system releases norepinephrine to prepare the body for stress.
• The "fight or flight" response is triggered by stress and activates the sympathetic nervous system.
• What is the primary role of the autonomic nervous system?

  Involuntary bodily functions
• Match the division of the autonomic nervous system with its primary function:

  Sympathetic Nervous System ↔️ "Fight or flight"

  Parasympathetic Nervous System ↔️ "Rest and digest"
• The parasympathetic nervous system releases acetylcholine to promote "rest and digest" functions.
• Arrange the physiological effects of the sympathetic nervous system in response to stress:

  1️⃣ Heart rate increases

  2️⃣ Breathing rate increases

  3️⃣ Digestion is inhibited

  4️⃣ Pupils dilate

  5️⃣ Sweat glands are activated
• What is the primary response activated by the Sympathetic Nervous System (SNS)?

  "Fight or flight"
• The SNS increases the body's heart rate during the "fight or flight" response.
• The Sympathetic Nervous System causes pupils to constrict.

  False
• What happens to digestion during the activation of the Sympathetic Nervous System?

  Digestion is inhibited
• Activation of the Sympathetic Nervous System causes sweat glands to become activated.