Myocardial contractility, Biology

Assignment Help:

Inspiration decreases the pressure in the central veins and thus increases the pressure gradient between the peripheral and central veins thus augmenting venous return. Skeletal muscle contraction also milks the venous flow towards the heart and the valves in the veins prevent gravitational return backwards.

Myocardial contractility is mostly dependent on the level of sympathetic nerve activity and is also increased by circulating catecholamines and inotropic drugs like dopamine and dobutamine.Contractility also increases with the fibre length.


Related Discussions:- Myocardial contractility

What is meant by the expression infant mortality, What is meant by the expr...

What is meant by the expression 'infant mortality'? Infant mortality refers to the number of babies in a population who die at the age of 1 year or less. It is usually express

Name of the cytoplasm division in the end of mitosis, What is the name of t...

What is the name of the cytoplasm division in the end of mitosis? What are the differences in this process between animal and plant cells? Cytoplasm division happens after telo

Different osmotic pressures, Q. Can solutions with the same concentration o...

Q. Can solutions with the same concentration of diverse solutes have different osmotic pressures? The osmotic pressure of a solution does not depend on the nature of the solute

Define precautions for preparation of bacterial smear, Define Precautions f...

Define Precautions for preparation of bacterial smear 1. The slide should not be greasy. 2. Hold the slide by their edges only. 3. Label should not come in contact with s

Explain risk assessment, Explain Risk Assessment Risk Assessment   :  ...

Explain Risk Assessment Risk Assessment   :  The scientific evaluation  of  known  or  potential adverse  health effects  resulting  from  human exposure to food borne hazards

Lower invertebrates, adaptation of the phylum protozoa to its function

adaptation of the phylum protozoa to its function

Solitary and colonial forms, Solitary and Colonial Forms Animals may l...

Solitary and Colonial Forms Animals may lead their lives either like individuals or in groups. While they exist as individuals, they are termed as solitary, but if they live i

Glucagon and glucocorticoids, Important  aspects  related to regulation inc...

Important  aspects  related to regulation include: 1)  The hormones glucagon and glucocorticoids  which are  secreted  during  starvation stimulate  glucose-6-phosphatase to en

Explain transition period from renaissance to modern period, Explain Transi...

Explain Transition Period from Renaissance to Modern Period? The transition period from the Renaissance to the Modern period produced many notable workers and much literature.

Why is it rare to find hemophilic women, Why is it rare to find hemophilic ...

Why is it rare to find hemophilic women? There are less hemophilic women than hemophilic men because women need to have two X chromosomes affected to develop the disease while

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