'Anatomy and Physiology Essay\r'

'The primary stopping point of this lab is to learn the names of many lineage vessels. You will use the models provided as well as pictures in your lab book.\r\nMicroscopic Structure of declination line Vessels\r\nadventitia intima: lines the lumen of the profligate vessel. Continuous with endocardium of soreness. Is exceedingly debonnaire to decrease resistance to blood flow. (Made of epithelium)\r\nTunica media: More bulky middle coat. Composed of smooth brawn and elastin. Regulation in the diameter of blood vessels, which alters peripheral resistance and blood constrict.\r\nTunica externa (adventitia): outer(prenominal) tunic. Function is primarily supportive and protective (areolar and thready CT)\r\nPicture\r\nGeneralized Structure of Arteries, Veins and Capillaries\r\nTypes of Blood Vessels\r\n whippy arteries: Contain much elastic tissue\r\nbigger arteries closer to the heart\r\nMust expand when heart pumps much blood into them and then passively echo after blood passes by.\r\nThus, must withstand twinge fluctuations\r\nMuscular arteries: Have less elastic tissue, moreover substantial muscle tissue\r\nSmaller arteries far from heart\r\nExposed to less extreme pressure fluctuations\r\nVeins: Far from heart\r\nNot subjected to pressure fluctuations\r\n ar low pressure vessels thus are sylphlike walled\r\nBlood flows against gravity so\r\n1. Have large lumens\r\n2. Have valves to prevent backflow\r\n3. Skeletal muscle pump\r\nCapillaries: Tiniest vessels\r\nOne cell layer bass: endothelium with underlying basal lamina (tunica intima)\r\nThinnest for making exchanges between blood and tissue cells\r\n legal action One\r\nObserving a vein and an artery on a microscope slide.\r\n study Systemic Arteries of the Body\r\nActivity Two\r\n do the models provided to find arteries listed\r\nUse pictures on the following pages to tending\r\nBoth models and pictures will be used on the test\r\nMajor Systemic Veins of the Body\r\nActivity Three\r\nUs e the models provided to find veins listed\r\nUse pictures on the following pages to assist\r\nBoth models and pictures will be used on the test\r\nSpecial Circulations\r\npulmonary Circulation\r\nDoes not serve metabolic needs of consistency tissues\r\nFunction is to bring blood close to alveoli in order do gas exchange\r\n pulmonic arteries are structurally similar to veins\r\nCreate a low pressure bed in the lungs\r\n carry on deoxygenated blood from heart to lungs\r\nPulmonary veins\r\n'