Adaptive mechanisms, Biology

Assignment Help:

The adaptive mechanisms may be short term ones which come into play within minutes or hours of the onset of myocardial dysfunction. These are:

Frank-Starling Mechanism

In the Frank-Starling mechanism increased preload helps in sustaining cardiac performance. Starling's law essentially means that stroke volume is related to the end-diastolic volume. Frank proposed that the greater initial left ventricular volume leads to more rapid rate of rise of pressure, greater peak pressure and faster rate of relaxation. So the Frank-Starling law accounts for increased inotropic state and increased diastolic filling.

Neuro Hormones

Activation of neurohumoral systems resulting in release of noradrenaline leading to augmentation of myocardial contractility.

Renin-Angiotensin-Aldosterone System

Activation of renin-angiotensin-aldosterone system which helps in maintaining arterial pressure and perfusion of vital organs.


Related Discussions:- Adaptive mechanisms

What are plant cell vacuoles, What are plant cell vacuoles? What are their ...

What are plant cell vacuoles? What are their functions? How is the covering membrane of the vacuoles called? Ans) Plant cell vacuoles are cell structures delimited by membranes

What is normalisation of inverted t-waves?, Q. What is Normalisation of Inv...

Q. What is Normalisation of Inverted T-Waves? In patients with flat or inverted T-waves at rest, the evolution to an upright T-wave has been considered by some to be a sign of

Excretory system, types of excretory system of lower animals

types of excretory system of lower animals

Haccp is a food-related operation, HACCP  is a food-related operation to: ...

HACCP  is a food-related operation to: A) Identify and assess hazard at every stage of operation, right from start to finish B) Determine the critical control points C) E

Chordata, what are the two main subdivisions of the phylum chordata

what are the two main subdivisions of the phylum chordata

Describe how micrornas are able to influence gene expression, 1. Transcript...

1. Transcriptional analyses of eukaryotic cells reveal widespread production of RNA. Using specific examples describe how: a) microRNAs are able to influence gene expression.

Bio-informational homework, Determine sequence weights for the sequences AC...

Determine sequence weights for the sequences ACTA, ACTT, CGTT, and AGAT in problem 1 by using Thompson, Higgins, and Gibson method

Long-day plants (ldp) - plant responses to light-dark cycles, Long-Day Plan...

Long-Day Plants (LDP) - Plant Responses to Light-Dark Cycles The definition of this is exactly opposite to short-day plant. That is those plants which flower when given more t

Long-term follow-up results , Long-term Follow-up Results :  To evaluate t...

Long-term Follow-up Results :  To evaluate the long-term results of surgery, one has to take into consideration the natural history, results of medical treatment and that of PTCA.

Genetics Problems, Andalusian chickens may be either black, white, or gray....

Andalusian chickens may be either black, white, or gray. The gene for black is not dominant over the gene for white, nor is the gene for white dominant over the gene for black. Whe

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