Relier Pairs the cardiovascular systemVersion en ligne cardiovascular system par Rose 1 What connects anterior & posterior brain blood supplies? 2 Select all of the true statements regarding arteries. 3 Right atrium 4 Left ventricle 5 Right atrium 6 The layer of the heart that actually contracts is the 7 Select all of the veins that ultimately drain into the inferior vena cava. 8 Blood that nourishes the heart wall is provided by the right and left __________. 9 The first heart sound (lub) results from closing the __________ valves. 10 Which of the following describes the umbilical vein? 11 Which of the following occurs during the ventricular systole phase of the cardiac cycle? 12 At the arterial end of a capillary, blood pressure is __________ than osmotic pressure, and fluid flows __________ the capillary. 13 Left ventricle 14 Vigorous exercise increases the demand for blood to supply active skeletal muscles. Select all of the factors that would help meet this demand. 15 Select the correct statement regarding blood pressure. 16 Left atrium 17 In fetal circulation, the __________ connects the pulmonary trunk to the aorta, allowing blood to bypass the nonfunctional fetal lungs. 18 Which of the following factors would cause an increase in the heart rate? 19 Select all of the correct statements regarding the size, location, and orientation of the heart. 20 Select all of the blood vessels that transport oxygen-rich blood. 21 Right ventricle 22 Which vessel receives blood directly from the left ventricle? 23 Starting with the pacemaker, impulses pass through the components of the intrinsic conduction system in which order? 24 Left atrium 25 Select all of the ways that arteries and veins differ structurally. 26 Which heart chamber has the thickest wall? 27 Right ventricle 28 Select all of the factors that increase peripheral resistance. 29 The tiny mass of cells that forms the pacemaker of the heart is called the __________. 30 cardiac output Great saphenous veins Hepatic veins Common iliac veins Biscuspid (mitral) valve Receives oxygen-poor blood from the body The heart is approximately the same size as a person's fist. The heart is located between the lungs within the mediastinum of the thoracic cavity. Transports oxygen-rich blood from the placenta to the fetus Tricuspid valve Aorta The systolic blood pressure corresponds to the pressure generated in an artery at the peak of ventricular contraction. Pumps oxygen-poor blood to the lungs coronary arteries The pressure in the ventricles is higher than the pressure in the aorta and pulmonary trunk. Increased stroke volume Increased heart rate The tunica media is thicker in arteries compared to veins. Veins have larger lumens than arteries. Epinephrine Exercise Pulmonary veins Aorta Circle of Willis Arteries transport blood away from the heart to the capillaries. Smooth muscle in the tunica media enables arteries to change vessel diameter. Pumps oxygen-rich blood to the body Receives oxygen-rich blood from the lungs Left ventricle Vasoconstriction Increased blood viscosity Atherosclerosis Aortic semilunar valve tricuspid and biscuspid (mitral) ductus arteriosus myocardium Pulmonary semilunar valve more; out of cardiac output Sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle, Purkinje fibers sinoatrial (SA) node 1 Which electrical event does the T wave of an electrocardiogram (ECG) represent? Ventricular repolarization
