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

What is first aid, What is First Aid? First-aid is the immediate and te...

What is First Aid? First-aid is the immediate and temporary care given to the victim of an accident or sudden illness. Its purpose is to (1) help preserve life, (2) preve

Medical terminology, identify ten diagnostic medical terms that use suffixe...

identify ten diagnostic medical terms that use suffixes note note suffixes and provide definitions

States in which water found during the water cycle, Q. What are the differe...

Q. What are the different states in which water is found during the water cycle? During the water cycle, water is found in solid state (snow, ice, etc.), liquid state (ground wa

Explain primary processing of oilseeds and pulse products, Pulse products: ...

Pulse products: The important processed pulse products are puffed chickpea and pea,  besan, papads, pulse-based weaning foods, quick cooking dhals, and canned dry peas   Oils

ADVANCEMENT , how communication can bring about advancement in any society....

how communication can bring about advancement in any society..

Air, what is the speed of light

what is the speed of light

Define the process of soil acidity, Define the process of Soil acidity ...

Define the process of Soil acidity Acid soils are made more suitable for agricultural use by liming which raises the soil pH.  Soil acidity is commonly decreased by adding carb

Explain the serum creatinine test, Explain the Serum Creatinine Test Cr...

Explain the Serum Creatinine Test Creatinine is a breakdown product of creatine, an important component of muscle. A serum creatinine test measures the amount of creatinine in

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