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

Define transport of carbon dioxide combination with protein, Define the Tra...

Define the Transport of Carbon Dioxide in combination with protein Carbon dioxide forms a neutral carbamino compound with haemoglobin. It combines with the haemoglobin in the r

Explain the control of salivary secretion, Explain the Control of Salivary ...

Explain the Control of Salivary Secretion The autonomic control of saliva secretion occurs in two ways, as unconditioned and conditioned reflex. What are these? Let's find out.

Water and wastewater treatment, Disinfection of water streams originating f...

Disinfection of water streams originating from potable water plants is key in protecting environmental health. Describe the process design and application, along with potential pro

Heat crossword, what is the unit that heat is measured in

what is the unit that heat is measured in

State the chemical and physical processes of weathering, State the Chemical...

State the Chemical and Physical processes of weathering The chemical and physical processes of weathering aid each other. A rock mechanically broken into smaller pieces exposes

Transformation of medieval economy, The Transformation of Medieval Economy:...

The Transformation of Medieval Economy: The new techniques led to greater production in  agriculture and, therefore, a surplus from the needs of  people. Increased productivi

Role of communication in promoting education , Role of communication in pr...

Role of communication in promoting education: Transmission  of knowledge and information, which is the first step in education, is obviously possible only through communication

Name two places on earth where continental glaciers exist, Name 2 places on...

Name 2 places on earth where continental glaciers exist: Antarctica And Greenland are the two place where continental glaciers exist:

What are the advantages of acid soils, What are the Advantages of Acid Soil...

What are the Advantages of Acid Soils The acid soils, formed by any of the above processes, behave as very strong acids so much so that pH is quite low even in partial convers

State the harmul effects of acidity of soil, State the harmul effects of Ac...

State the harmul effects of Acidity of soil Acidity of soil may have harmful effects on plants due to the effect on enzymatic changes, reduced availability of nutrients like c

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