Arterioles

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&nbsp;''Arterioles'', [[Artery|Arteries]], [[Vein|Veins]], Venules and [[Capillary|Capillaries]] are the five [[Blood vessels|blood vessels]] which make up the circulatory system.&nbsp; <br> <br>Arterioles are tubes of endothelial cells which are enclosed by [[Smooth muscle cells|smooth muscle cells]] and connective tissue cells. They have a thick muscular wall, narrow [[Lumen|lumen]] and are small in size being only a few millimetres long. <sup>[1]</sup>
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Arterioles, [[Artery|Arteries]], [[Vein|Veins]], Venules and [[Capillary|Capillaries]] are the five [[Blood vessels|blood vessels]] which make up the circulatory system.&nbsp;  
  
<br><br>Their main function is:
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Arterioles are tubes of endothelial cells which are enclosed by [[Smooth muscle cells|smooth muscle cells]] and connective tissue cells. They have a thick muscular wall, narrow [[Lumen|lumen]] and are small in size being only a few millimetres long<ref>Rhoades, R. A., &amp;amp; Bell, D. R. (2009). Physiology; Principles for Clinical Medicine; 3rd Edition. Philadelphia: Lippincott Williams and Wilkins, A Wolters Kluwer business.</ref>.
  
1. To control the flow of blood to certain regions of an organ or particular tissue
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<sup></sup>Their main function is:
  
2. To distributer blood within the capillary network. <sup>[2]</sup>  
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#To control the flow of blood to certain regions of an organ or particular tissue
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#To distributer blood within the capillary network<ref>Khurana, I. (2008). Essentials of Medical Physiology. Noida: Elsevier.</ref>.
  
<br>They are able to increase resistance and therefore decrease blood flow by [[Vasoconstriction|vasoconstriction]] and can also decrease resitance and therefore increase blood flow by vasodilation of their walls. <sup>[1]</sup><sup></sup>  
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They are able to increase resistance and therefore decrease blood flow by [[Vasoconstriction|vasoconstriction]] and can also decrease resitance and therefore increase blood flow by vasodilation of their walls<ref>Rhoades, R. A., &amp;amp; Bell, D. R. (2009). Physiology; Principles for Clinical Medicine; 3rd Edition. Philadelphia: Lippincott Williams and Wilkins, A Wolters Kluwer business.</ref>.
  
<br>
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=== References  ===
  
=== <br>'''References'''  ===
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<references />
 
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----
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<br>1. Rhoades, R. A., &amp; Bell, D. R. (2009). Physiology; Principles for Clinical Medicine; 3rd Edition. Philadelphia: Lippincott Williams and Wilkins, A Wolters Kluwer business. <br>2. Khurana, I. (2008). Essentials of Medical Physiology. Noida: Elsevier.
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Revision as of 03:12, 27 November 2013

Arterioles, Arteries, Veins, Venules and Capillaries are the five blood vessels which make up the circulatory system. 

Arterioles are tubes of endothelial cells which are enclosed by smooth muscle cells and connective tissue cells. They have a thick muscular wall, narrow lumen and are small in size being only a few millimetres long[1].

Their main function is:

  1. To control the flow of blood to certain regions of an organ or particular tissue
  2. To distributer blood within the capillary network[2].

They are able to increase resistance and therefore decrease blood flow by vasoconstriction and can also decrease resitance and therefore increase blood flow by vasodilation of their walls[3].

References

  1. Rhoades, R. A., &amp; Bell, D. R. (2009). Physiology; Principles for Clinical Medicine; 3rd Edition. Philadelphia: Lippincott Williams and Wilkins, A Wolters Kluwer business.
  2. Khurana, I. (2008). Essentials of Medical Physiology. Noida: Elsevier.
  3. Rhoades, R. A., &amp; Bell, D. R. (2009). Physiology; Principles for Clinical Medicine; 3rd Edition. Philadelphia: Lippincott Williams and Wilkins, A Wolters Kluwer business.
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