Cardiovascular System | Summary Already Passed

what does the term diastole mean? {Ans: relaxation of the ventricles}what does the term systole mean? {Ans: contraction of the ventricles}what are the only oxygenated veins in the body? {Ans: pulmonary veins}Where does gas exchange occur to oxygenate blood? {Ans: pulmonary capillaries}What is systolic blood pressure? {Ans: Pressure in arteries/left ventricle when ventricles are at maximally contracted. Top number}What are the main factor that impacts blood pressure? {Ans: Cardiac output (how much blood the heart pumps) and peripheral resistance (how much constriction or dilation of blood vessels)}vein structure with regard to - pressure, smooth muscle, valves, and direction. {Ans: Less smooth muscle, blood is at much lower pressure in veins, valves required to prevent backflow. Veins take blood back to the heart.}What is diastolic blood pressure? {Ans: Pressure in left ventricle/arteries when ventricle is relaxed. Bottom number}What neurotransmitter increases heart rate? {Ans: norepinephrine}Describe erythroctye structure and function {Ans: RBCs have no nucleus. They are jam-packed with hemoglobin, and iron-containing protein that can bind oxygen. They carry oxygen to tissues, then release it to diffuse into the cells.}What does the QRS complex of an ECG represent? {Ans: ventricular depolarization}What are