Blood And Blood Vessels Flashcards
Tunica Intima
Epithelial lining in contact with blood
Tunica Media
Smooth muscle in blood vessels
Tunica Externa
Helps vessels stay in position and offers protection
Types of Blood Vessels
Arteries, arteriolar, capillaries, venues and veins
Venous Return Qualities
Valves Gravity Skeletal Muscle Pump Respiratory Pump Smooth Muscle
Blood Pressure Values
Normal = 120/80 High = 140/90
Arteriosclerosis
Hardening and loss of elasticity of arteries
Arteriolosclerosis
Hardening and loss of elasticity of arterioles
Atherosclerosis
Hardening of artery due to plaque build up, inflammatory disease, blood clots may form
Aneurysm
Weakness in arterial wall causing excessive enlargement; stroke/heart attack
Deep Vein thrombosis
Blood clots formed in large veins
Varicous Veins
Valves stop preventing back flow so pockets of blood form
Chronic Venous Insufficiency
Valves stop working, blood stops moving, lack of oxygen and waste products build causing necrosis
Blood Make Up
55% plasma, 45% formed elements e.g RBC, WBC + platelets
Blood Homeostasis
Transportation, regulation and protection