Basic structure of heart, Biology

Assignment Help:

Basic Structure of Heart

The heart is small organ about the size of one's fist, located in the middle and slightly to the left of the mediastinum in the chest. The wider top part is the base and the blunt tip projecting forward and to the left if the apex. The heart is enclosed by the pericardium which is thick, fibrous and non-elastic. It consists of two layers: the inner layer-visceral layer and the outer parietal layer. The two pericardial surfaces are separated by a pericardial space that contains approximately 10-20 ml of thin, clear pericardial fluid which acts as a lubricant and reduces friction produced by the pumping action of the heart.

Epicardium-an epithelial single-celled layer surrounding the heart, the innermost layer of the pericardium. Myocardium is the actual heart muscle layer composed of striated muscle fibers. The myocardium is responsible for the energy created to eject a volume of blood. Therefore, it is thicker in the ventricles than in the atria. Endocardium is the inner layer and consists of endothelial tissue lining the entire interior of cardiac chambers and covers the heart valves.


Related Discussions:- Basic structure of heart

Can we use ethylene oxide as chemical sterilant, Q. Can we use Ethylene oxi...

Q. Can we use Ethylene oxide as chemical sterilant? Ethylene oxide: This is considered as the only chemical sterilant while the others are considered merely as disinfectan

Presence and constancy - synthetic characters, Presence and Constancy - Syn...

Presence and Constancy - Synthetic Characters Presence and constancy refer to how uniformly a species occurs in different stands in a community. For example, when a species is

Variety of locomotion, Variety of Locomotion A number of animals are s...

Variety of Locomotion A number of animals are sendentary, remaining attached to some substratum. These animals may move parts of their body but this does not result in the mov

Why neuron a is a healthy neuron, Why Neuron A is a healthy neuron Neu...

Why Neuron A is a healthy neuron Neuron A is a healthy neuron with all the usual ion channels.  When at rest with a membrane voltage of R millivolts, neuron A produces no acti

Evolution of culture, A general agreerncnt anlong nll the human evolutionis...

A general agreerncnt anlong nll the human evolutionists who may have a very radical philosophical hackground and convictions is that man is the result of an extraordinary evolution

What is intercellular communication explain briefly, What is Intercellular ...

What is Intercellular Communication explain briefly? Both plant and animal cells have developed means of communication between cells. In animals, specialized areas of the cell

Show Relation between tissue and the implant material, Relation between Tis...

Relation between Tissue and the implant material The biologic interaction between the tissue and the implant material at an  interface may result in a variety of phenomena such

What is the life cycle of trypanosoma cruzi, Q. What is the life cycle of T...

Q. What is the life cycle of Trypanosoma cruzi? The Trypanosoma cruzi is a heteroxenous parasite that is it has an intermediate host, the triatomine bug, and a definitive host,

Classification, Tricks of learn a classification (molusca,arthopoda,prifera...

Tricks of learn a classification (molusca,arthopoda,prifera etc.)

Illustrate the structure of starch granule, The Starch Granule - Structure ...

The Starch Granule - Structure Starch is a polysaccharide, a chain of many glucose molecules. There are two types of glucose chains in starch. One is a simple chain called am

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