Examples of sinusoid in the following topics:
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- The sinusoids are capillaries that develop after implantation to allow the exchange of gas and nutrients with the mother.
- A sinusoid is a small blood vessel that is a type of capillary similar to a fenestrated endothelium.
- Sinusoids are actually classified as a type of open pore capillary (that is, discontinuous) as opposed to fenestrated.
- Sinusoids are found in the liver, lymphoid tissue, endocrine organs, and hematopoietic organs, such as the bone marrow and the spleen.
- Sinusoids found within the terminal villi of the placenta are not comparable to these because they possess a continuous endothelium and complete basal lamina.
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- Sinusoidal - Sinusoidal capillaries are a special type of fenestrated capillaries that have larger openings (30-40 μm in diameter) in the endothelium.
- Sinusoid blood vessels are primarily located in the bone marrow, lymph nodes, and adrenal gland.
- Some sinusoids are special in that they do not have tight junctions between cells.
- These are called discontinuous sinusoidal capillaries, present in the liver and spleen where greater movement of cells and materials is necessary.
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- Blood from either source passes into cavities between the hepatocytes of the liver called sinusoids, which feature a fenestrated, discontinuous endothelium allowing for the effecient transfer and processing of nutrients in the liver.
- Sinusoid of a rat liver with fenestrated endothelial cells.
- Fenestrae are approx 100nm diameter, and sinusoidal width 5 microns.
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- Hepatocytes are organized into plates separated by vascular channels (sinusoids) for blood vessels.
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- Some are used to make plasma proteins, but most leave through liver sinusoids to be used by body cells to construct proteins.
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- The vascular supply of long bones depends on several points of inflow, which feed complex sinusoidal networks within the bone.