Bio 255 Unit 4 Test Practice Questions and Answers correct

Bio 255 Unit 4 Test Practice Questions and Answers correct Body Systemic means.... Arteries Anything that flows AWAY from the heart veins Anything that flows TO the heart Transportation Regulation Protection What are the 3 function of blood? 8% Blood is what percentage of body weight? 55% 45% In whole blood: _________% Plasma _________% Formed elements (Blood cells) Hematocrit percentage of volume of all formed elements Neutrophils 50-70% of white blood cell count Phagocytic removal of foreign particles and damaged cells target bacteria Eosinophils phagocytic removal of allergens Basophils promotes inflammation by the secretion of histamines lymphocytes produce antibodies for the removal of toxins and viruses monocytes active phagocytic removal of large foreign particles and damaged cells Platelets fragments of cells, stop blood loss from circulatory system . release factors in homeostasis Neurotrophils Lymphocytes Monocytes Eosinophils Basophils Never. Let. Monkeys. Eat. Bannanas Homeostasis formal name for blood clotting series of reactions to stop bleeding Clot Red Blood Cells and platelets that are binded together The Heart How you pump blood all throughout the body Fibrous pericardium Bag around the heart outer layer of sac helps to hold in place Parietal layer of serous pericardium Still not attached to the heart yet lines inside of fibrous pericardium, continuous with visceral layer at level of major vessels Visceral layer of serous pericardium lines outside of the heart outermost layer of the heart covers myocardium Epicardium Visceral serous pericardium Myocardium cardiac muscle Cardias muscle cells connected my gap junctions that allow electronic synchronization many cells contract together endocardium that lines the heart covers valves continuous with endothelium of blood vessels Ventricles What pushes blood away from the heart? veins Carries blood TO the heart Arteries Carries blood AWAY from the heart Pulmonary veins What carries oxygenated blood from the lungs TO the heart? Pulmonary arteries What carries deoxygenated blood from the heart TO the lungs? Ascending Aorta Brachiocephalic Trunk Left Common Carotid Artery Left Subclavian Artery ABCS Less Likely If an individuals heart had several large anastomoses between the branches of the left and right coronary arteries, would they be more or less likely to have a heart attack? Anatomoses connection between two arteries from different sources Interventricular septum What separates the ventricles in the heart? Pulmonary circulation Right side of heart lungs left side of heart Systemic circulation left side of heart body tissues right side of heart Bicuspid and tricuspid Between atrium and ventricles What are the atrioventricular valves? Pulmonary and aortic Between ventricles and major vessels What are the semilunar valves? Chordae tendineae Connect ends of atrioventricular valves to papillary muscles More pressure being pushed off against them Valves What prevents back flow? LUB First sound, occurs when AV valves close and signifies beginning of systole DUB second sound, occurs when Semilunar valves close at beginning of ventricular diastole Murmurs abnormal sounds due to leaks and narrowing (stenosis) autorhythmic electrical signal throughout the heart conducting system specialized cells that initiate and conduct impulses to contractile muscle cells Systole Associated with blood flow through the heart contraction of a heart chamber Diastole associated with blood flow through the heart relaxation of a heart chamber