Explain change of posture - decreased cardiac output, Science

Assignment Help:

Explain Change of posture - Decreased Cardiac Output

When a person stands up from lying down posture, there is an immediate but transient fall in systolic blood pressure. This is because, upon standing, there is a pooling of venous blood in the lower limbs due to gravity. This leads to a decreased venous return, which in turn decreases the stroke volume and cardiac output causing a fall in the systolic pressure.

However, within fifteen seconds, the baroreceptor reflexes bring about a cardio acceleration and vasoconstriction. As a result, the blood pressure soon returns to normal or may rise above value due to overcompensation. You may work out the changes on standing.


Related Discussions:- Explain change of posture - decreased cardiac output

Useful instruction for stock verification and maintenance , Useful Instruct...

Useful Instruction : You should go through of LT-1 course before doing this exercise. This exercise is a mix of demonstration and hands on activities. Take the help of your counse

Student, how increases in atmospheric concentrations of carbon dioxide and ...

how increases in atmospheric concentrations of carbon dioxide and other greenhouse gases cause global warming.

Chemistry in golden era, Chemistry in golden era: Chemistry In the fiel...

Chemistry in golden era: Chemistry In the field  of metallurgy  too  we notice some remarkable developmenk. Before the close of the sixteenth century, zinc was isolated by a pr

The difference between hard and soft water, The difference between hard and...

The difference between hard and soft water Collect some hard water from a stream(or make some as defined in the next experiment). Also secure some soft water like as rain wate

What are the factors affecting soil formation, What are the Factors Affecti...

What are the Factors Affecting Soil Formation  Parent materials formed due to weathering of rocks are transported from the place of their origin and re-deposited before they ar

Explain the structure of tongue, Explain the Structure of Tongue The to...

Explain the Structure of Tongue The tongue is a muscular organ. It is covered with a mucous membrane. The tongue is attached by its base to the hyoid bone and by a fold of its

Conductometry, conductometry and its biological uses

conductometry and its biological uses

Ecology and environment, Ecology and environment: Today, we hear people...

Ecology and environment: Today, we hear people from different walks of  life, using the terms ecology and environment. Politicians,  leaders. town planners, students and archit

State about the carbonaceous and nitrogeneous materials, State about the ca...

State about the carbonaceous and nitrogeneous materials The basic ingredients of these are either animal or human excreta containing microorganisms which decompose carbonaceous

Discuss about the life on earth, Discuss about the life on earth We can...

Discuss about the life on earth We can say that all life on Earth is locked in the minerals and by weathering nutrients important to life are made available. Even life in the s

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