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

What are the cnidocytes, Q. What are the cnidocytes? What is the name of th...

Q. What are the cnidocytes? What is the name of the capsule inside the cnidocyte? What are the biological functions of this structure? Cnidocytes are specific cells present in

How do contraceptive pills generally work, Q. How do contraceptive pills ge...

Q. How do contraceptive pills generally work? Contraceptive pills generally contain the hormones progesterone and estrogen. If taken daily from the 4th day after menses the abn

How to increased co2 levels in the atmosphere, Increased CO 2 levels in th...

Increased CO 2 levels in the atmosphere are correlated with rising global temperatures, leading many scientists to believe that the first phenomenon has caused the second. What wo

Involution - internalization of mesoderm, Involution - Internalization of M...

Involution - Internalization of Mesoderm As by now mentioned, in the frog Xenopus (and probably in other amphibian species as well) the cells of presumptive mesoderm are in t

Define altered glucose metabolism - nutrition during stress, Define Altered...

Define Altered Glucose Metabolism - Nutrition during Stress? Blood glucose levels are generally elevated in the infected patient but plasma insulin levels are normal or even hi

Features of phylum porifera and eumetazoa, Features of Phylum Porifera and ...

Features of Phylum Porifera and Eumetazoa Table: Distinctive Features of Phylum Porifera and Eumetazoa The branch Eumetazoa, as we have seen above, consist of meta

Vitamin, fish liver oil is rich in which vitamin ???

fish liver oil is rich in which vitamin ???

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

Social Determinants of Health - Transport Rising worldwide incomes have led to a massive use of automobiles and in particular cars. Cars are seen as a threat to health because

Pulp tissue revascularization, Pulp Tissue Revascularization :   Defi...

Pulp Tissue Revascularization :   Definition: Is the procedure to re-establish the vitality in non-vital tooth by allowing repair & regeneration of the tissues.

How does biogeography contribute to an evolution, How does biogeography con...

How does biogeography contribute to an understanding of evolution? In biogeography studies, same animals that seem to be closely related are adapted to dissimilar environments

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