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Chapter 12 midterm
| Question | Answer |
|---|---|
| The visceral layer of serous pericardium is also known as______ | Epicardium |
| The pericardial cavity is located between the______ and the______ | Epicardium ; parietal layer of serous pericardium |
| The right ventricle pumps ______ blood through the ______ valve | Deoxygenated ; pulmonary |
| The _______ receives blood from all of the cardiac veins | Coronary sinus |
| The ______ pumps blood into the aorta | Left ventricle |
| The ________ pumps blood into the pulmonary trunk | Right ventricle |
| The right atrium passes_______ blood through the _______ valve to the right ventricle | Deoxygenated;tricuspid |
| The membranous covering of the heart is the_______ which includes a loosely fitting pericardial sac composed of an inner _______ and an outer _______ | Pericardium; parietal layer of serous pericardium; fibrous pericardium |
| The ______ receives blood from______ and supply blood to the cardiac striated muscle | Coronary arteries; aorta |
| The contraction phase of a cardiac cycle, known as _______ _________ blood pressure. The relaxation phase of a cardiac cycle known as ______ _______ blood pressure | Systole; increases; diastole; decreases |
| The second heart sound (Dup) results from the closing of the _______ valves in the beginning of _______ | Semilunar; ventricular diastole |
| When the right ventricle contracts, the _______ | Right atrium always relaxes simultaneously |
| When _______ blood flows passively into the atria and then passively into the ventricles | Both the atria and the ventricles relax |
| The _______ is referred to as the pacemaker of the heart | SA node |
| The ventricles receive action potentials from the | Subendocardiac conducting network |
| The QRS complex of an ECG is produced by the | Depolarization of the ventricles |
| The atria receive the action potentials from the | SA node |
| Reduced levels of blood Ca2+ | Decrease both heart rate and contraction strength |
| The cardiac output is the | Volume of blood pumped from each ventricle in one minute |
| The cardiac control center is located in the | Medulla oblongata |
| The tunica media is found in | Arteries and veins only |
| Valves are found in some | Veins |
| At the venular end of a capillary, fluid moves | From the interstitial fluid into the capillary by osmosis |
| _______ contain nearly 60% of the total blood volume and are considered as storage areas for blood | Veins |
| The wall of capillaries consists of | An endothelium supported by a layer of areolar connective tissue |
| Pre capillary sphincters control the flow of blood from | Arterioles to capillary network |
| All of the following mechanisms assist veins in returning blood to the heart except | Ventricular systole |
| An increase in_______ action potential frequency results in______ in blood pressure | Sympathetic; increase |
| The diastolic blood pressure is the lowest systemic arterial blood pressure during | Ventricular relaxation |
| As arterioles constrict, peripheral resistance ______ and blood pressure_____ accordingly | Increases; increases |
| The sequence of arteries supplying most of the blood to either knee is | Abdominal aorta>common iliac artery> external iliac artery> femoral artery> popliteal artery |
| In addition to the carotid arteries the brain is also supplied with blood through the | Vertebral arteries |
| The systemic circuit carries _______ blood from the_______ to all parts of the body except the lungs and returns _______ blood to the ______ | Oxygenated ; left ventricle ; deoxygenated ; right atrium |
| The pulmonary veins carry ______ blood to the_______ | Oxygenated ; left atrium |
| The artery carrying blood from the abdominal aorta to the distal part of the large intestine is the | Inferior mesenteric artery |
| The celiac trunk supplies blood to all of the following except the | Small intestine |
| The sequence of veins returning blood from the stomach is | Gastric veins> hepatic portal vein > liver> hepatic vein > inferior vena cava> right atrium |
| The sequence of veins draining most of the blood from either side of the brain is | Internal jugular vein> brachiocephalic vein> superior vena cava> right atrium |
| Myocardial infarction is usually caused by an obstruction of | A coronary artery |
| ________ is a rapid heart rate in which the contractions are uncoordinated | Fibrillation |
| The _______ receives blood from the superior venae cavae and the coronary sinus | Right atrium |
| The mitral valve prevents backflow of blood from the ______ into the ______ | Left ventricle; left atrium |
| When ______ blood pressure within the ventricles increases which causes the AV valves to close and the semilunar valves to open | The atria relax and the ventricles contract |
| The T wave of an ECG is produced by the | Repolarization of the ventricles |
| The SA node is located in the | Right atrium at the junction of the superior vena cava |
| Excess levels of blood K+ | Decrease both heart rate and contraction strength |
| The stroke volume is the | Volume of blood pumped from each ventricle per heartbeat |
| At the arteriolar end of a capillary, fluid moves | Out of the capillary into the interstitial fluid by filtration |
| Exchange of dissolved substances between the blood and the interstitial fluid occurs by | Diffusion |
| Arteries contain _______ than veins | More smooth muscle and elastic connective tissue |
| Which of the following is the driving force pushing blood out of the heart??” | Ventricular systole |
| A persons total length of blood vessels increases peripheral resistance ________ and the blood pressure_______ accordingly | Increases ; increases |
| The artery carrying blood from the abdominal aorta to most of the small intestine is the | Superior mesenteric artery |
Created by:
Senoye1