Explain atrial pressure, Biology

Assignment Help:

Q. Explain Atrial Pressure?

The RA pressure wave form has three positive deflections - "a", "c", and "v" waves. The "a" wave is due to atrial systole and follows the P-wave on surface ECG. The "x" descent follows the "a" wave and represents atrial relaxation and downward pulling of the tricuspid annulus by RV contraction. The "x" descent is interrupted by the "c" wave, which is a small positive deflection caused by protrusion of the closed tricuspid valve into the RA. The pressure in the RA rises after the "x" descent due to passive atrial filling. The atrial pressure then peaks as the "v" which represents ventricular systole.

The LA pressure waveform is similar to that of the RA although normal LA pressure is higher representing the high pressure system of the left side of the heart. In LA pressures, unlike RA pressures, the "v" wave is generally higher than the "a" wave.


Related Discussions:- Explain atrial pressure

Explain the disadvantages of fixation, Explain the Disadvantages of Fixatio...

Explain the Disadvantages of Fixation? Fixation has following disadvantages also. These are highlighted herewith: (i) It distorts the cell's appearance. (ii) Motility can

Determine the types of symbols used in soil horizons, Determine the types o...

Determine the types of symbols used in Soil Horizons  Three kinds of symbols are used in various combinations to designate horizons. These are capital letters, lower case lett

Social determinants of health - unemployment, Social Determinants of Health...

Social Determinants of Health - Unemployment That unemployment gives rise to social insecurity and psychological stress is well recognised. Fears and uncertainties are known t

Guess the number of different haploid cells, A diploid cell contains four p...

A diploid cell contains four pairs of homologous chromosomes designated C1 and C2, M1 and M2, S1 and S2, and W1 and W2. Predict the number of different haploid cells that could be

Symptoms of enteropathogenic escherichia coli, Symptoms: The E. coli gastro...

Symptoms: The E. coli gastroenteritis syndrome is caused by the ingestion of 10 6 -10 10 viable cells/g that must colonize the small intestine and produce  enterotoxin. The syndr

Why are trees green, Why are trees green? It is because leaves have chl...

Why are trees green? It is because leaves have chloroplasts, which have a green pigment, which also have chlorophyll in them. They are used for conducting photosynthesis, which

Is the neural impulse generated by the stimulus, Q. Is the neural impulse g...

Q. Is the neural impulse generated by the stimulus that triggers the arch reflex restricted within the neurons of this circuit? This is obvious since the person that received t

What are enzyme cofactors, What are enzyme cofactors? Some enzymes requ...

What are enzyme cofactors? Some enzymes require other associated molecules to work. These molecules are known as enzyme cofactors and they can be, for example, organic ions lik

Explain the conveyor (or band) dryers, Explain the Conveyor (or Band) Dryer...

Explain the Conveyor (or Band) Dryers? In the conveyor (or band) dryer, the product is distributed on a moving belt, typically of a perforated plate, that passes through a tunn

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