Explain extrasystole and compensatory pause, Science

Assignment Help:

Explain Extrasystole and Compensatory Pause

During the relaxation period, cardiac muscle is in the relative refractory period i.e. sleeping but only just. If a sufficiently strong electrical stimulus is applied during this period, it leads to a contractile response. Since this contraction appears earlier than the normally expected contraction, it may be considered an 'extra' contraction. Hence, it is called extrasystole. The next natural impulse then arrives during the refractory period corresponding to the extrasystole. Hence, the natural impulse is ineffective and a normally expected contraction is missed. As they say, "I missed a beat". The pause in cardiac activity is called compensatory pause. In real life, if we drink too much coffee, the heart fires leading to premature contraction of the ventricles and extrasystole may be produced.


Related Discussions:- Explain extrasystole and compensatory pause

Food chain, Food Chain: As you know from the discussion of the previous...

Food Chain: As you know from the discussion of the previous subsection, one of  the ways in which the organisms are  related is through food, that is, one organism becomes food

Minerals and vltamins, Minerals and vltamins Minerals and vltamins ...

Minerals and vltamins Minerals and vltamins are not a source of energy but they are necessary in many of the steps involved in the release of energy in  the cells. Thus,  t

Role of bile in digestion, Role of Bile in Digestion Bile is produced b...

Role of Bile in Digestion Bile is produced by  liver and stored in gall bladder. During digestion,  the gall bladder contracts  and supplies bile, rapidly to the duodenum throu

Mixed reality, #i do not know how to write assignment on it..

#i do not know how to write assignment on it..

Determine the facts of clay soils and sandy soils, How do you explain the f...

How do you explain the fact that clay soils which commonly have higher pore space than sandy soils are often more poorly aerated than sandy soils. Clay soils have higher pore s

Explain the osmosis, Explain the Osmosis Osmosis, quite simply, is the ...

Explain the Osmosis Osmosis, quite simply, is the physical process, wherein there is transfer of a liquid solvent (water) through a semi-permeable membrane that does not allow

A tropical storm will be declared a hurricane when, A tropical storm will b...

A tropical storm will be declared a hurricane when: There is evidence of eye formation and sustained wind speeds of 74 mph

Determine in detail about the phosphorus, Determine in detail about the Pho...

Determine in detail about the Phosphorus  Phosphorus, with nitrogen and potassium is classed as a major nutrient element. It is a constituent of nucleic acids, phytin, phosphol

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