serous membrane that lines the interior of the heart

Serous Membrane Definition

The humour membrane, or serosal membrane, is a thin membrane that lines the internal physical structure cavities and organs so much as the nerve, lungs, and abdominal pit. The thin membrane is made up of mesothelium tissue which originates from the mesoderm. The serous tissue layer allows for frictionless front in a number of alive variety meat.

On that point are a number of humour membranes in the body: the pericardium surrounds the heart and some of the blood vessels; the serosa membranes surround the lungs, and the peritoneal membrane surrounds the abdominal cavity and similar organs. There are also serous membranes encompassing the testes (the adventitia vaginalis).

This figure depicts the pericardium that surrounds the heart.

This fig depicts the pericardium surrounding the heart and the pleura surrounding the lungs.

Serous Membrane Structure

The humour tissue layer is made of two layers of mesothelium joined by a layer of inexact connective tissue paper and unmoving on a essential lamina. An intramural nonrational layer surrounds the variety meat, while a parietal layer forms the walls of the trunk cavities. The humour membrane generally forms an airtight seal around the body cavity. The mesothelium cells bring on glycosaminoglycans and past substances that bi as a lubricant. The ii mesothelium layers are able to move effortlessly all over all other due to this thin layer of fluid between the cardinal.

Serous membranes vary in size and complexity. The pericardium and the pleura are fairly simple, with smooth contours. The peritoneum is the largest tissue layer with a convoluted cast in approximately regions, and a expanse that can meter as much as the expanse of the skin (approximately 1.8 m²).

Serous Membrane Function

The serous membrane has a act of functions related to protection of the organs and consistency cavities which information technology encloses. It allows the frictionless movement of the heart and lungs, as well as the organs of the abdominal muscle cavity. This allows movement of the smooth muscles without damage to the organs. As with any semitrailer-permeable membrane, the serous membrane too acts to regularize movement of fluids and other substances crosswise the membrane. Additive functions include the deduction of cytokines and other molecules involved in membrane recompense and inflammatory response, and the control of some immune responses including coagulation and movement of ovalbumin pedigree cells.

Quiz

1. How many types of serous membrane are there?
A. 1
B. 2
C. 3
D. 4

Answer to Question #1

D is even off. Thither are four types of serous membranes: the pericardium that surrounds the heart, the pleura that surround the lungs, the peritoneum that surrounds the abdominal cavity and associated organs, and the tunica vaginalis that surrounds the testes.

2. Which is the largest serous membrane?
A. Pericardium
B. Pleura
C. Peritoneum
D. Tunica vaginalis

Solution to Question #2

C is chasten. The peritoneum is the largest of the serous membranes. The peritoneum is very coiled in around regions, folding in upon itself and increasing the control surface area. The unfolded surface area of the peritoneum is close to that of the expanse of the skin.

3. What is an grave function of the pericardium?
A. Carry oxygen to the lungs
B. Allow movement of the heart
C. Protect the kidneys
D. Off toxins

Answer to Question #3

B is correct. The pericardium is the serosa that surrounds the heart. It has respective protective functions including allowing movement of the marrow within the body cavity without rubbing, protecting the warmheartedness from external stimuli by controlling inflammation and immune responses, and the synthesis and release of a issue of molecules including cytokines and antigens.

References

• Martin, E., & McFerran, T. A. (2014 online). Oxford, UK: Oxford Press. eISBN: 9780191770395.

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Biologydictionary.net Editors. "Serous Membrane." Biology Dictionary, Biologydictionary.earning, 04 Jul. 2017, https://biologydictionary.net/serous-tissue layer/.

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serous membrane that lines the interior of the heart

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