NURS 1300 Key PASSED Exam Questions and CORRECT Answers
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Course
NURS 1300
Institution
NURS 1300
Precordiumanterior chest- directly over heart and great vessels
mediastinummiddle third of thoracic cage- heart and great vessels are here
Great vesslesmajor arteries and veins connected to the heart
-located between the lungs
-middle third of the thoracic cage (mediastinum)ôo
Pericardiumtoug...
NURS 1300 Key PASSED Exam Questions and CORRECT Answers Precordium ✔✔✔ anterior chest - directly over heart and great vessels mediastinum ✔✔✔ middle third of thoracic cage - heart and great vessels are here Great vessles ✔✔✔ major arterie s and veins connected to the heart -located between the lungs -middle third of the thoracic cage (mediastinum)ôo Pericardium ✔✔✔ tough, fibroud double walled sac that surrounds and protects the heart -consists of 2 layers -few mL of pericardial fluid -adher es to great vessels, esophagus, sternum, pleurae and anchored to diaphragm Pericardial Fluid ✔✔✔ located in the pericardium -smooths friction, free movement of heart muscle Myocardium ✔✔✔ muscular layer of heart -performs pumping action Endocardium ✔✔✔ thin l ayer of endothelial tissue -lines inner surface of hear chambers and valves where is the heart located? ✔✔✔ between the 2nd and 5th intercostal space -from the right sternum border to the left midclavicular line RIGHT SIDE OF THE HEART ✔✔✔ -pumps blood to lu ngs -larger/more anterior -tricuspid & pulmonic valves -s/s neck/abd distention with increase pressure LEFT SIDE OF HEART ✔✔✔ -pumps blood to rest of body -smaller/more posterior -bicuspid and aortic valve -s/s respiratory with increase pressure Apical Pulse (POINT OF MAXIMUM IMPULSE) ✔✔✔ -beats against chest wall -5th intercostal space 7-9 cm from midsternal line -midclavicular line Superior and Inferior Vena Cava ✔✔✔ -returns unoxygenated blood to R side of heart Aorta✔✔✔ -artery -carries oxygenate d blood to whole body from L ventricle Pulmonary Artery ✔✔✔ leaves R side of heart ventricle, bifurcates, and caries venous blood to lungs Pulmonary Veins ✔✔✔ return freshly oxygenated blood to L side of heart Chambers of the heart ✔✔✔ Atria: thin -walled rese rvoir for holding blood Ventricles: thick -walled muslce pumping layer Antrioventricular valves ✔✔✔ separate atria and ventricles open during heart filled (diastole) -allow ventricles to fill with blood -close during systole (pumping) -prevents regurgitation of blood in atria 1. TRICUSPID (R A V valve) 2. BICUSPID (MITRAL) - L A V valve Semilunar valves ✔✔✔ between ventricles and arteries 3 cusps look like half moon open during systole - allow blood to be ejected from heart 1. PULMONIC: R side heart 2. AORTIC - L side of heart *Cardiac Circulation ✔✔✔ inferior/superior vena cava (unoxygenated blood) right atrium tricuspid valve right ventricle pulmonary semilunar valve pulmonarty arteries (unoxygenated blood) lungs (oxygenate blood) pulmonar y veins (return freshly oxygenated blood) left atrium bicuspid valve left ventricle aortic semilunar valve aorta (delivers oxygenated blood to body) arteries capillaries veins inferior/superior vena cava
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