Explain parasympathetic nerves system, Science

Assignment Help:

Explain parasympathetic Nerves System

Another system that runs parallel to the sympathetic system is termed as the parasympathetic system. This system has an effect just opposite to the sympathetic system. It relaxes the heart, decreases the heart rate (negative chronotropic), the force of contraction (negative inotropic), the conduction rate (negative dromotropic) and the excitability of tissue (negative bathmotropic). The nerves that supply the heart's atria are termed as vagi (singular vagus). As the name suggests, vagus is a vagabond, a wanderer charting an unfamiliar, vague course supplying the digestive tract, heart, the voice box etc. The heart is supplied by the right and left vagi. The peculiarity is that they do not supply the ventricles. The sympathetic system only supplies the ventricles. Overall, we have seen that the heart hangs in a balance of positive and negative forces: the sympathetic and parasympathetic system. Now you know the mechanism that may be operating when our yogis increase their heart rate or stop it! The sympathetic nerves have a chemical neurotransmitter called nor-adrenaline, whereas, the parasympathetic nerves release acetylcholine at the postganglionic nerve endings.


Related Discussions:- Explain parasympathetic nerves system

Formulate a nursing care plan, Part 1 1)    Client Assessment.  In the cli...

Part 1 1)    Client Assessment.  In the clinical setting you will: Perform an holistic, nursing focused client assessment and document your findings.You are required to use: a)

Chemical reactions of amino acids, Chemical Reactions of Amino Acids Th...

Chemical Reactions of Amino Acids The chemical reactions of amino acids can be divided into three classes: i)  Reactions of carboxylic group ii)  Reactions of amino group

Week6 assign, For this Assignment, you will identify a social issue or prob...

For this Assignment, you will identify a social issue or problem that is important to you and reflect on how it might be remediated through the application of learning principles t

Infectious diseases, Infectious diseases: Some of you may have heard ...

Infectious diseases: Some of you may have heard about the great bubonic plague, a fatal disease of the blood, spread by fleas and respiratory  secretions. It occurred in epid

What is results of recipient operation, What is Results of Recipient Operat...

What is Results of Recipient Operation ? International Society for Heart and Lung Transplantation (ISHLT) maintains data from more than 300 centres starting from 1980. Data fo

The need for reporting accidents, The Need for Reporting Accidents : All a...

The Need for Reporting Accidents : All accidents (no matter how trivial) and, dangerous near misses should be recorded. The recording of accidents ensures that all injuries are tr

Neptune, Neptune The eigth planet, Neptune, was discoveted  in  1846 ...

Neptune The eigth planet, Neptune, was discoveted  in  1846 by  astronomer Johann Gottfried Galle. We have already told you  the story of  its discovery  in last. It  is so f

How soil textural classes categorised, How soil textural classes categorise...

How soil textural classes categorised and what are is their significance? The soil textural classes are based on the percentage of the separate(s) which contributes maximum to

Explain about the alluvial soils, Explain about the Alluvial soils All...

Explain about the Alluvial soils Alluvial soils are characterised by their extreme depth, often several hundred feet, and a grey or greyish brown colour. Their texture varies

Explain the adrenocorticotropic hormone (acth), Explain the Adrenocorticotr...

Explain the Adrenocorticotropic Hormone (ACTH) ACTH, also known as corticotrophin, is a polypeptide and is synthesized by corticotroph cells of the anterior pituitary gland. It

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd