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Cards In This Set
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Describe a blood vessel
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Form a 100,00km CLOSED fluid delivery system of dynamic pulsating tubes, that can grow
Carry blood from the heart to all body tissues and back to the heart |
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What are the three types of blood vessel
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From heart to tissues and back to heart
arteries = away from heart to carpillaries capillaries = to tissues and back to veins veins = towards the heart |
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Draw the structure and what you would see under a microscope of the blood vessels and there arrangement
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What is the wall composision of arties and viens
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The walls are composed of the same 3 layers - tunics
Innermost layer - tunica intima (in inimate contact with blood) - enodthelium Middle layer - tunica media - smooth muscle outermost layer - tunica externa - connective tissue |
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Describe Arteries
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Always transport blood away from the heart
Thick layer of smooth muscle there can withstand the pressure Aeterioles are the smallest arteries and carry blood towards the capillaries |
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Describe capillaries 8th ed. p 718
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Microscopic
single layer of endothelium with a basement membrane found everywhere except epidermis, tendons and ligaments, cartilage and cornea |
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Describe the veins
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The vay to the heart
Venules - capillaries unite to form vessels that start to carry the blood back towards the heart Veins Large reservoirs. decreased blood pressure within veins leads to need for valves which are folds of the tunica intima |
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What is the venous return aided by?
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Valves, skeletal muscular activity and deep breathing
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Describe the location of the heart
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Locatd in the mediastinum, 1/3 behind the sternum, 2/3 behind the left ribs, apex in the 5th intercostal space
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Draw a diagram of the location of the heart
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Describe the structure and function of the heart
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Small hollow muscular pump
one way valve system beats 100,00 times / day transport blood containing O2, nutrients, cellular wastes, and hotmones to assist in homeostasis |
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What are the circuits of blood travel
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Pulmonary to the lungs and back
Systemic to the rest of the body and back Coronary to the tissues of the heart and back |
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Describe Pericardium
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Double walled serous membrane outer parietal layer
inner visceral layer between is a potential cavity containing serous fluid which decreases friction |
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Draw a diagram of the coverings of the heart
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Draw a diagram of the flow of blood through the systems
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