Key Difference – Visceral vs Parietal Pericardium  

The pericardium which is also known as “pericardial sac” is the connective tproblem layer that encompasses the whole heart consisting of the root of the excellent vessels prefer the aorta, vena cava, and pulmonary artery. The pericardium is a fluid-filled sac that protects the heart. It is composed of an external fibrous layer (fibrous pericardium) and also an inner double layer of serous membrane (serous pericardium). The fibrous pericardium is comprised of difficult connective tissue and non-distensible in nature. It is consistent via the main tendon of the diaphragm. The rigidity of this type is preventing the quick overfilling of the heart. Pericardium perdevelops several vital attributes such as defense against infection, lubrication feature, prevention from overfilling of heart and also fixing the heart by connecting to diaphragm and so on The serous pericardium is enclosing within the fibrous pericardium. The serous pericardium is double layered; outer layer dubbed as “parietal pericardium” and an inner layer referred to as as “visceral pericardium”. The crucial distinction in between visceral pericardium and also parietal pericardium is, the visceral pericardium is the inner layer of the serous pericardium that outlines the external layer of the heart’s epicardium while the parietal pericardium is the external layer of the serous pericardium that outlines inner surchallenge of the fibrous pericardium.

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CONTENTS

1. Outline and Key Difference2. What is Visceral Pericardium3. What is Parietal Pericardium4. Similarities Between Visceral and Parietal Pericardium5. Side by Side Comparison – Visceral vs Parietal Pericardium in Tabular Form6. Summary

What is Visceral Pericardium?

This is the inner layer of the serous pericardium. It likewise develops the epicardium or external layer of the wevery one of the heart. Therefore, the visceral pericardium is the inner layer of the serous pericardium that lines the external layer of the heart’s epicardium. The primary feature of the visceral pericardium is to protect the inner heart layers. And it is additionally assisting the manufacturing of serous fluid recognized as “pericardial fluid”. The visceral layer is extfinishing to the root of the great vessels later on uniting through the parietal layer of the serous pericardium. This process happens in 2 areas wbelow the aorta and also pulmonary trunk leave the heart and also wbelow the premium vena cava, inferior vena cava, and pulmonary veins enter the heart.


Figure 01: The Visceral Pericardium


Between the visceral pericardium and the parietal pericardium, there is a potential space referred to as as “pericardial cavity”. It contains a supply of serous liquid (pericardial fluid). The pericardial fluid functions as a shock absorber. This reduces the friction that takes place between the pericardial membranes. Tbelow are 2 pericardial sinuses that run through the pericardial cavity. Sinus is a passagemethod or dubbed as a channel. The transverse pericardial sinus is positioned above the left atrium, anterior to the remarkable vena cava, posterior to the pulmonary trunk and also ascfinishing aorta. On the other hand also, the oblique pericardial sinus is located posterior to the heart and is bounded by the inferior vena cava and pulmonary veins.


What is Parietal Pericardium?

The parietal pericardium is the external layer of the serous pericardium that lines inner surconfront of the fibrous pericardium. It is occasionally dubbed as the layer between the fibrous pericardium and the visceral pericardium. It proceeds with the fibrous pericardium which gives a second layer of insulation for the heart.


Figure 02: Parietal Pericardium


There are a number of pericardial disorders that impact the normal attribute of the parietal pericardium such as pericarditis, pericardial effusion, and also cardiac tamponade. The parietal pericardium is also protecting the heart by reducing the friction.

What are the Similarities Between Visceral and also Parietal Pericardium?

Both are consisted of of the exact same serous membrane.Both are component of the serous pericardium.Both are protecting the heart.Both are reducing the heart’s friction.

What is the Difference Between Visceral and Parietal Pericardium?


Visceral Pericardium vs Parietal Pericardium

Visceral pericardium is the inner layer of the serous pericardium.Parietal pericardium is the external layer of serous pericardium.
Location
Visceral pericardium lines the external layer of the heart’s epicardium.Parietal pericardium lines the interior surface of the fibrous pericardium.
Connection to the Epicardium of the Heart
Visceral pericardium is linked to the outer layer of the epicardium of the heart.Parietal pericardium is not linked to the outer layer of the epicardium of the heart.
 Connection to the Fibrous Pericardium of the Heart
Visceral pericardium is not linked to the interior surconfront of the fibrous pericardium.Parietal pericardium is connected to the interior surchallenge of the fibrous pericardium.
Structural Organization
Visceral pericardium outlines the heart.Parietal pericardium outlines the visceral pericardium.

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Rundown – Visceral vs Parietal Pericardium

The pericardium is the fluid-filled sac that surrounds the heart and the proximal end of the aorta, vena cava, and also pulmonary artery. The heart and the circulatory mechanism create the cardiovascular mechanism together. The major attribute of the heart is to circulate blood to tconcerns and body’s organs. The external membrane of the heart is called as pericardium that features as a protective coat. The wevery one of the heart has actually 3 layers; Epicardium (outside layer), myocardium (middle layer or heart muscle tissue), endocardium (inner layer). The pericardium is further divided right into the fibrous pericardium and the serous pericardium. The serous pericardium is composed of the external layer dubbed as “parietal pericardium” and the inner layer dubbed as “visceral pericardium”. This is the difference between visceral and parietal pericardium.

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Reference:

1.“Heart Structure – Anatomy & Physiology.” Heart Structure – Anatomy & Physiology – WikiVet English. Available here 2.Bailey, Regina. “What Is the Pericardium?” ThoughtCo. Available here3.“The Pericardium.” TeachMeAnatomy, 18 Aug. 2016. Available here 

Image Courtesy:

1.’Blausen 0724 PericardialSac’By Blausen Medical Communications, Inc. (CC BY 3.0) through Commons Wikimedia 2.’2004 Heart Wall’By OpenStax College – Anatomy & Physiology, Connexions Web site, Jun 19, 2013. (CC BY 3.0) using Commons Wikimedia 


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Filed Under: Anatomy Tagged With: Compare Visceral and Parietal Pericardium, Parietal Pericardium, Parietal Pericardium Definition, Parietal Pericardium Location, Parietal Pericardium Structure, Visceral and Parietal Pericardium Differences, Visceral and Parietal Pericardium Similarities, Visceral Pericardium, Visceral Pericardium Definition, Visceral Pericardium Location, Visceral Pericardium Structure, Visceral vs Parietal Pericardium

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