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Systems 1b Practical Anatomy- Cardiovascular Anatomy Lectures


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Systems 1b Practical Anatomy- Cardiovascular Anatomy Lectures


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Fergus Wood


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[Front]


what are the three types of capillaries
[Back]


continuous, fenestrated, discontinuous

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Systems 1b Practical Anatomy- Cardiovascular Anatomy Lectures - Details

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17 questions
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What are the three types of capillaries
Continuous, fenestrated, discontinuous
Continuous capillaries
-normally in muscles -complete basal lamina -continuous epithelial lining
Fenestrated capillaries
-gaps between cytoplasm of the cell, in glands ect -complete basal lamina -fenostrated (gaps) endothelial lining
Discontinuous capillaries
-allows free passage of fluid and cells through them and found in liver ect -incomplete basal lamina -fenestrated endothelial lining
Sinusiods
-large diameter discontinuous capillaries and found where large amounts of exchange occur -T. intima contains phagocytic cells -in the liver, some endocrine glands
Capillary beds and arteriovenous shunts
Bypass capillary beds (eg in skin for thermoregulation)
Superficial veins
Thick walled and no support from surrounding tissue
Deep veins
Thin walled and surrounding support from deep fascia and muscles
Lymph capillaries
-lined by thin endothelium and absent/rudimentary basal lamina -capillaries are closed at one end -anchoring filaments (fine collagenous filaments link endothelium to surrounding tissue keeping lumen open) -do differentiate from blood capillaries look for RBC
What is the vasa vasorum
Vessels of the vessels- supply blood to blood vessels
What is the mediastinum cavity
Area in the chest between the two lungs and contsins the heart, part of the trachea, eosaphagus and the great vessels
What does the pulmonary trunk split into?
The right and left pulmonary arteries
What is situs inversus?
Dextrocardia (major orgns are mirrored and heart may point to the right) is a congenital condition
What is the serous pericardium
Epithelium that secrets pericardial fluid which acts as a lubricant (viseral and periatal pericardium)