Blood vessels

• 3 types of Blood Vessels:

  1. Arteries
  2. Veins
  3. Capillaries
• Arteries 

  • transport oxygenated blood from the heart and distribute them to various tissues of the body through their branches
• Arteriolessmallest arteries, measuring <0.1mm in diameter.
• Anatomic End Arteries  vessels whose terminal branches do not anastomose with branches of arteries supplying adjacent areas.
• Functional End Arteries 

  • vessels whose do anastomose with adjacent branches of the arteries
• • Anastomosis a cross connection between two adjacent channels, tubes, or other networks.
• Veins vessels that transport deoxygenated blood from the various tissues of the body back to the heart, of which many of them possess valves.
• Venules - Smallest vein
• Tributaries - Unite to form branches which is commonly join with one another to form venus plexus; smaller veins
• • Venous comitantes often accompany a medium sized artery, one on each side.
• Portal Vein Enters the liver and breaks up into smaller veins until they joint capillary-like vessels; sinusoids
• Capillaries

  • are microscopic vessels in the form of a network connecting the arterioles and venules
• Sinusoids 

  • Resemble capillaries in that thin walled blood vessels
  • Have an irregular cross diameter and are wider than capillaries
  • Commonly found in the liver, bone marrow and spleen
• 2 types of lymphatic system: lymphatic tissues and Lymphatic vessels
• Lymphatic tissues are a type of connective tissue that contains a large number of lymphocytes.
• Lymphatic vessels are the tubes that assist the cardiovascular system in the removal of tissue fluid from the tissue spaces of the body; they then return the fluid to the blood.
• Lymph

  • is the name given to tissue fluid once it has entered a lymphatic vessel.
• Lymph Capillaries

  •  are a network of fine vessels that drain lymph from the tissues.
• Lymph Capillaries

  • are drained by small lymph vessels, which unite to form larger lymph vessels.
• Lymph Capillaries

  • have a bead-like appearance because of the presence of valves.
• Afferent Lymph vessels 

  • carries lymph TO the lymph nodes
• Efferent Lymph vessels

  • carries lymph AWAY from the lymph node
• Right lymphatic duct and Thoracic Duct:

  • area in which lymph reaches the bloodstream, located at the root of the neck.