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 the etiological agents of malaria, Q. What are the etiological age...

Q. What are the etiological agents of malaria? The etiological agents of malaria are protozoans of the genus Plasmodium. There are four different kinds of plasmodia that cause

Haustorial behavior of embryo sac, Haustorial Behavior of Embryo Sac ...

Haustorial Behavior of Embryo Sac There are instances in which the entire embryo sac may grow beyond the ovular tissue. The central cell may also form multicellular projectio

Demonstration of tremendous diversity, Q. Demonstration of tremendous diver...

Q. Demonstration of tremendous diversity? A objective of taxonomy is the assemblage of knowledge gained. This is usually in the form of treatises useful to fellow scientists an

Define triglycerides, Q. Define Triglycerides? Triglycerides are produc...

Q. Define Triglycerides? Triglycerides are produced by the esterification of glycerol with three fatty acid molecules. They are the body's major energy store, particularly in a

Components of ecosystem, Components of Ecosystem The components of the ...

Components of Ecosystem The components of the ecosystem can be categorised into abiotic or non-living and biotic or living components; Abiotic components: The important ab

Which terrestrial vertebrate group is extremely rare deserts, Which terrest...

Which terrestrial vertebrate group is extremely rare in deserts? The Amphibians are terrestrial vertebrates very rare in desert environments (although there are a few species a

Is hemoglobin binds o2 more tightly at ph 7.2, Which of the following state...

Which of the following statements is correct? A. Hemoglobin binds O2 more tightly at pH 7.2 than at pH 7.4. B. Fetal hemoglobin under physiological conditions binds O2 more t

How drugs increase food intake, How Drugs Increase Food Intake? You mus...

How Drugs Increase Food Intake? You must understand that drugs may also increase food intake. This is because they can: Stimulate appetite : This is a common side effect

The social environment - stress of hospitalization, The Social Environment ...

The Social Environment   When the child is admitted to the hospital his social environment is totally changed and all health team members are strangers for him. It is your resp

Uses of plural embryos, Uses of Plural Embryos Although the basic tha...

Uses of Plural Embryos Although the basic that trigger causes polyembryony are not fully understood, there has been no dearth of interest in exploiting supernumerary embryos.

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