AAMI Anatomy 1 Heart exam questions with 100% verified correct answers

Heart a hollow, cone shaped, 4 chambered, muscular organ, which weighs about 11 oz., and is about the size of a clenched fist. Mediastinum where is the heart located? Obliquely how is the heart positioned? 2/3 how much of the heart is lying left of the midline? Diaphragm what does the right border of the heart rest on? Apex what is the pointed end of the heart called? Inferior and Left which way is the apex of the heart directed? Base what is the wide portion of the heart called? Superior and Right which way does the base of the heart lie? Pericardium, Myocardium, Endocardium what are the 3 layers of the heart? Parietal Pericardium the outer layer of the heart is called? Visceral Pericardium the inner layer of the heart is called? Pericardial Cavity it is situated in between the Visceral Pericardium and the Parietal Pericardium of the heart. Myocardium the middle layer of the heart. Myocardium what is the muscle portion of the heart? Myocardium what is the thickest layer of the heart? Myocardium which layer of the heart is responsible for the pumping action of the heart? Striated and Involuntary cardiac muscle is? Endocardium the inner most layer of the heart. Endocardium is a thin layer of endothelium that lies over a thin layer of connective tissue Endocardium not only covers the valves of the heart, but its continuous with the endothelial lining of blood vessels. Right and Left Atria what are the upper chambers of the heart called? Right and Left Ventricles what are the lower chambers of the heart called? 4 how many chambers are there in the heart? Septum what is the wall or partition dividing a body space or cavity? Interartrial Septum is the partition or wall that separates the right atrium from the left atrium. Atrio-ventricular Septum separates the atria from the ventricles. Separates the upper chambers from the lower chambers. Right Atrio-ventricular Septum separates the right atrium from the right ventricle. Left Atrio-ventricular Septum separates the left atrium from the left ventricle. Interventricular Septum the wall or partition that is located between the right and left ventricles. 4 how many valves does the heart have? Allow blood to flow in one direction what are the functions of a heart valve? Open and Close what to valves do when the heart contracts and relaxes? Tricuspid Valve is located between the right atrium and the right ventricle. Gets its name because it has 3 cusps or flaps. Allows blood to flow from the right atrium to the right ventricle, but not in the opposite direction. (Right Atrio-Ventricular Valve) Bicuspid Valve is located between the left atrium and the left ventricle. Gets its name because is has 2 cusps or flaps. Allows blood to flow from the left atrium to the left ventricle. (Left Atrio-Ventricular Valve) Pulmonary Semi-Lunar Valve is found at the orifice of the pulmonary trunk. Allows blood to flow from the right ventricle into the pulmonary trunk, and deliver it to the lungs. Aortic Semi-Lunar Valve is located at the orifice or the aorta. Allows blood to leave the left ventricle and flow into the aorta. 3 Veins where does the right atrium in the heart get its blood from? Superior Vena Cava returns blood from all areas above the Diaphragm. Inferior Vena Cava returns blood from all areas inferior to the Diaphragm.