Preview

Parasympathetic Branch

Good Essays
Open Document
Open Document
614 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Parasympathetic Branch
Parasympathetic Dominants often use sleep to overcome energy losses following periods of sustained alertness.

The Autonomic Nervous System
• The sympathetic branch of the autonomic nervous system is responsible for functions that require focus and decision making. It’s the branch that speeds up when you need to go fast. It goes into high gear when an emergency situation requires quick thinking and reflexes, spurts of energy, hyper vigilance, and rapid heart rate - a need to “fight or flee fast”, the fight or flight reflex, so when you sense danger, it’s your sympathetic that prepares you to do battle or run like hell. The body functions that are not crucial to your survival at the time are decelerated or inactivated - so energy can be delivered
…show more content…
The parasympathetic branch is the restorative side. When the racing heart slows down, the digestive system begins to process food, the excretory system goes back to excreting wastes, and a normal sleep cycle is activated.
When the 2 branches are balanced, life happens in normal cycles.
2 neurotransmitters, acetylcholine and norepinephrine, are used to communicate within the autonomic system. Acetylcholine has parasympathetic effects (inhibiting), and norepinephrine (adrenaline) has sympathetic (stimulating) effects. For example, adrenaline stimulates perspiration, heart rate, and respiration - and can literally cause your body hair to stand on end.
The sympathetic and parasympathetic tend to go out of balance in the western cultures. The expression, “taking my work to bed with me” implies that the sympathetic side has become too active and is dominating the rest and digest system. The expression, “can’t get it together” implies that the parasympathetic has become too active - and is dominating the act and react side. A balanced person flows in and out of both branches without falling out of the
…show more content…
It distributes the energy produced by the manufacturers to muscles and tissues over which we have conscious control - and to the ones over which we don’t. Everyone has an autonomic nervous system, but not everyone has 1 branch that dominates the whole energy (ATP) distribution process, literally monopolizing how energy gets allocated.
• Sympathetic Dominants can override energy shortages and power failures - like home-alarm systems with battery back up to sound the alarm and notify authorities - even during big power outages. Sympathetic Dominants can be like Ever Ready batteries.
• Parasympathetic Dominants, on the other hand, can have shorts in their ATP distributing systems and not sound the alarm, even when the house is being burglarized in the light of day. “Asleep at the switch” is the apt term for them when they’re too far out of balance.
• Sympathetic Dominants aren’t all nervous wrecks, nor are all Parasympathetic Dominants lazy. It’s a matter of choice and

You May Also Find These Documents Helpful

  • Good Essays

    M2 D2 UNIT 5

    • 685 Words
    • 2 Pages

    Homeostasis is the process which the body internally is kept relatively stable despite changes in the environment. Your body is able to adapt to several conditions. For instance, average human body temperature is 37°C, varying slightly from person to person. When the temperature outside drops to 30 degrees, your body temperature remains the same, proving your body has the ability to regulate its own temperature. Along with temperature, there are many other ways in which your body regulates itself, especially during exercise. The heart is controlled by the sympathetic nervous system and the parasympathetic nervous system. These two systems control the rate of the heart, so it is beating enough oxygenated blood around the body to provide respiring muscle tissues with the right amount of oxygen. For example, when the body is exercising, more oxygen is needed in the muscles, so the heart needs to pump faster to accommodate this. The sympathetic nervous system is responsible for the increase of the heart rate during physical exercise, fear or stress. The parasympathetic nervous system slows down the heart rate during periods of rest. The Sino-atrial node sends electrical impulses around the heart muscle and tells it how fast it should be beating according to the impulses received from the parasympathetic and sympathetic nervous systems. Every few seconds, the Sino-atrial node sends out nerve impulses which branch across the atrial muscle fibres and cause a contraction. These impulses are received by the atrio-ventricular node which stimulates the second contraction of the heart. Another factor that effects the heart rate is adrenaline which is released from the adrenal gland during times of physical action, stress or fear. Adrenaline takes effect on the Sino-atrial node and…

    • 685 Words
    • 2 Pages
    Good Essays
  • Best Essays

    P5 M2 D2

    • 4801 Words
    • 12 Pages

    Homeostasis is simply how the body keeps conditions inside the same. It is described as the maintenance of a constant internal environment. Generally, the body is in homeostasis when its needs are met and it’s functioning properly. Every organ in the body contributes to homeostasis. A complex set of chemical, thermal, and neural factors interact in complex ways, both helping the body while it works to maintain homeostasis. In homeostasis there is the concept of Negative feedback which ensures that, in any control system, changes are reversed and returned back to the set level. There are four different homeostatic mechanisms for regulation these four are the heart rate, breathing rate, body temperature and blood glucose levels. Negative feedback system is made out of receptors to detect change, a control centre to receive the information and process the response and effectors to reverse the change and re-establish the original state. (Anatomy & Physiology, 2013)…

    • 4801 Words
    • 12 Pages
    Best Essays
  • Good Essays

    It is expected to recognize a threshold of the daphnia in its reaction the three different adrenalin concentrations, in terms of heart rate.…

    • 1200 Words
    • 6 Pages
    Good Essays
  • Satisfactory Essays

    Mrs. underhill

    • 636 Words
    • 3 Pages

    their relation to the above questions. Describe the role of the nervous system, adrenal glands, kidneys and…

    • 636 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Dual Inner Observations

    • 1324 Words
    • 6 Pages

    The effector organs for the sympathetic system include: the smooth muscle of blood vessels, lungs, viscera, scalp, pupils, the heart, and glands. The effector organs for the parasympathetic system include: lacrimal glands, salivary glands, neck, blood vessels of the head, thoracoabdominal viscera, smooth muscle of glands and viscera (eg, liver, spleen, colon, kidneys, bladder,…

    • 1324 Words
    • 6 Pages
    Good Essays
  • Good Essays

    Chapter 4 & 5 Study Guide

    • 1215 Words
    • 5 Pages

    5. Which measure of physiological activity appears to be a “pure” measure of SNS activity, unaffected by parasympathetic activity?…

    • 1215 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Physio Ex 6

    • 937 Words
    • 4 Pages

    a. The sympathetic and parasympathetic are two branches of the autonomic nervous system. Both supply nerve impulses to the heart. The sympathetic (fight or flight), becomes more active when needed. Stimulation will increase the heart rate and force of contractions.…

    • 937 Words
    • 4 Pages
    Good Essays
  • Good Essays

    37.|Terry has not slept for 72 hours. It is increasingly likely that he will be more susceptible to:…

    • 4109 Words
    • 17 Pages
    Good Essays
  • Satisfactory Essays

    Psy 340 Week 2

    • 870 Words
    • 4 Pages

    The autonomic nervous system is divided into two sub-sections called the sympathetic nervous system and the parasympathetic nervous system. The sympathetic nervous system is the actual system that releases energy and prepares the body for action. The body then typically restores itself back to normal after a period of time by the parasympathetic nervous system, which acts as a kind of stabilizer (Sanes DH, Reh TA, Harris WA (2006). Development of the nervous system)”.…

    • 870 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    2000 METER ROW

    • 1158 Words
    • 3 Pages

    2. Why is the sympathetic division of the autonomic nervous system active just before the race?…

    • 1158 Words
    • 3 Pages
    Good Essays
  • Good Essays

    will send a series of impulses to the SAN in the heart as a result of chemoreceptors…

    • 633 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    SYMPATHETIC VS PARASYMPATHETIC What are some things that happen when you get scared? When you have just had a big meal?…

    • 591 Words
    • 3 Pages
    Satisfactory Essays
  • Powerful Essays

    A&P II Nervous Tissue

    • 2627 Words
    • 11 Pages

    1 Thursday, January 30, 2014 - Two divisions : sympathetic (Fight-or-Flight) and parasympathetic (Rest-andDigest) ! • Enteric Nervous System : effectors are smooth muscle, glands, endocrine cells of the the GI tract ! - Enteric NS : Brain of the Gut ! • Between the circular and longitudinal smooth muscle layers of the muscularis ! • 100 million neurons arranged into two plexus extending from the esophagus to the anus !…

    • 2627 Words
    • 11 Pages
    Powerful Essays
  • Powerful Essays

    Childhood Trauma

    • 1601 Words
    • 7 Pages

    systems react, preparing the mind and body to protect itself against threat. In some instances, the…

    • 1601 Words
    • 7 Pages
    Powerful Essays
  • Better Essays

    Gender Identity Paper

    • 1316 Words
    • 6 Pages

    The interaction between hormones and behavior is quite complex. The body consists of many hormones that are needed for the daily networking of the body functions. The hormones in the endocrine system controls an individual’s life; for instance growth, reproduction, metabolism, moods; which tries to hold everything in check while maintaining a balancing act dealing with stress, the human thought pattern and human actions. Just the sympathetic nervous system, which consists of the arousal part, this section of the human spinal cord operates like this; it dilates the pupil, accelerates the heartbeat then inhibits the digestion to the stomach, pancreas, and liver, in the pancreas the stimulation of glucose for the liver takes place; subsequently, moving on down to the secretion of the epinephrine, and norepinephrine; which in turn relaxes the bladder and stimulates ejection for the male. On the other hand, the parasympathetic nervous system is the calming part of the body, and it is as follows; the pupil contracts and slows down the heartbeat, and stimulates the digestion, which stimulates the gallbladder and contracts the bladder in turn allows the blood to flow to the…

    • 1316 Words
    • 6 Pages
    Better Essays