Which description is not consistent with the sympathetic division – The sympathetic division, a branch of the autonomic nervous system, plays a crucial role in the body’s “fight or flight” response. This division’s characteristics, neurotransmitters, and effects on organs and tissues are well-defined. However, certain descriptions attributed to the sympathetic division may not align with its established characteristics.
This article aims to identify and explain the description that is inconsistent with the sympathetic division, providing evidence and examples to support our analysis. Understanding this inconsistency is essential for comprehending the sympathetic division’s role in the body’s stress response.
Introduction
The sympathetic division of the autonomic nervous system (ANS) is responsible for the body’s “fight or flight” response. It prepares the body to respond to perceived threats or stressors.
When activated, the sympathetic division releases neurotransmitters that increase heart rate, blood pressure, and respiration. It also dilates pupils, inhibits digestion, and redirects blood flow to muscles.
Characteristics of the Sympathetic Division
The sympathetic division is characterized by the release of the neurotransmitter norepinephrine (noradrenaline). Norepinephrine binds to alpha and beta receptors, which mediate its effects on various organs and tissues.
Sympathetic stimulation typically increases heart rate, blood pressure, and respiration. It also dilates pupils, inhibits digestion, and redirects blood flow to muscles.
Descriptions of the Sympathetic Division
- Prepares the body for “fight or flight”
- Releases norepinephrine
- Increases heart rate
- Inhibits digestion
- Constricts blood vessels
Explanation of the Inconsistent Description: Which Description Is Not Consistent With The Sympathetic Division
The description “constricts blood vessels” is not consistent with the sympathetic division. The sympathetic division typically dilates blood vessels, especially in skeletal muscles, to increase blood flow.
Constriction of blood vessels is typically associated with the parasympathetic division of the ANS, which promotes “rest and digest” functions.
Quick FAQs
What is the primary function of the sympathetic division?
The primary function of the sympathetic division is to prepare the body for a “fight or flight” response in stressful situations.
Which neurotransmitter is primarily released by sympathetic neurons?
Norepinephrine (noradrenaline) is the primary neurotransmitter released by sympathetic neurons.
