Which of the following is the outside layer that lines the inner surface of the fibrous pericardium A. Visceral Pericardium B. Endocardium C. Parietal Pericardium D. Epicardium
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- In the systemic circuit, the hearts _______ half pumps blood to all body regions; then blood flows to the heart. a. left; deoxygenated; oxygenated b. right; deoxygenated; oxygenated c. left; oxygenated; deoxygenated d. right; oxygenated; deoxygenatedVisit this site (http://openstaxcollege.org/l/heartvalve) to observe an echocardiogram of actual heart valves opening and closing. Although much of the heart has been removed from this gif loop so the chordae tendineae are not visible, why is their presence more critical for the atrioventricular valves (tricuspid and mitral) than the semilunar (aortic and pulmonary) valves?Figure 40.11 Which of the following statements about the heart is false? The mitral valve separates the left ventricle from the left atrium. Blood travels through the bicuspid valve to the left atrium. Both the aortic and the pulmonary valves are semilunar valves. The mitral valve is an atrioventricular valve.
- The right coronary artery typically: supplies the pericardium has a circumflex branch supplies most of the interventricular septum O supplies both the AV and SA nodes passes to the left side of the pulmonary trunk after arising from the right aortic sinusWhich of the following contains blood with the lowest oxygen content? a. aortab. left atriumc. right ventricled. pulmonary veinse. systemic arteriolesWhich of the following are true of the pericardium? There is a small amount of fluid found deep to the visceral layer. The fibrous outer layer can also be called the parietal layer. ● In addition to a fibrous layer, the pericardium has a visceral and parietal lay Provides electrical insulation between the atria and ventricles Separates the left and right ventricles.
- A membrane called the _____ covers the heart. A membrane superficial to this membrane is the _____. A parietal pericardium; visceral pericardium B visceral pericardium; parietal pericardium C fibrous pericardium; endocardium D endocardium; parietal peritoneumvisceral pericardium endocardium myocardium parietal pericardium pericardial cavity The heart is covered by a pericardial sac. The outer layer of the sac is fibrous connective tissue layer called the The is a serous connective tissue layer that's directly adhered to the heart's surface. Between these two layers is the , which is filled with pericardial fluid and serves to cushion the heart. The is the thick muscular layer of the heart that makes-up the bulk of the chamber walls. It is thicker in heart chambers that pump blood farther distances, such as the left ventricle, and thinner in the atria that do not pump blood very long distances. The innermost heart layer is the , which has a slippery surface to prevent blood from sticking to the heart chamber walls.Which of the following is found in the middle portion of the inferior mediastinum? trachea esophagus aortic arch ● None of these options are correct! thoracic aorta
- Which of the following arteries do not constrict: Pulmonary Plantar Femoral Aorta BrachialWhich of the following statements concerning the heart is true 1. The intraventricular septum prevents the electrical activity from stimulating the heart in a superior to inferir direction 2. The bundle of his is located in the intraventricular septum 3. The bundle branches stimulates the ventricles in ann inferior to superior directionWhich of the following statements are true of the mitral valve? (Please note that you may pick more than one) It is attached to the papillary muscles via the chordae tendineae ) It is a trileaflet valve It is a bileaflet valve O It is located between the right ventricle and pulmonary artery