DAANCE Module 1 –Basic Sciences Exam Rest Questions And Answers Verified 100% Correct

DAANCE Module 1 –Basic Sciences Exam Rest Questions And Answers Verified 100% Correct Flow of Blood through the heart - ANSWER 1. right atrium fills with blood 2. contracts- tricuspid valve 3. right ventricle fills with blood 4. contracts- closes tricuspid valve/opens pulmonary valve 5. blood goes through pulmonary artery to the lungs 6. pulmonary veins returns blood to left atrium 7. contracts-mitral valve 8. left ventricle fills with blood 9. Contracts- forces blood through aortic valve into aorta and then the peripheral circulation. closure of the four valves prevents back flow. if valve is damaged then this will be a - ANSWER heart murmur or mitral valve prolapse most heart problems are because of - ANSWER faulty or reduced coronary circulation- the hearts own circulatory system reduced oxygen supply weakens the heart this condition is called - ANSWER ischemia what results from ischemia - ANSWER angina pectoris- chest pain poor circulation can also cause - ANSWER myocardium infarction arteries can either ________ or _________ - ANSWER vasodilation or vasoconstriction Heart has four chamber- what are they - ANSWER left atrium, right atrium, left ventricle, right ventricle Where does the left atrium receive blood from - ANSWER from the lungs, via the pulmonary vein- oxygen rich blood Where does the right atrium receive blood from - ANSWER from the peripheral (body's) circulation and is oxygen poor the ventricles receive blood from where - ANSWER the atria Ventricle anatomy - ANSWER thicker walls larger chambers left ventricle is the thickest m. Where does the right ventricle send blood - ANSWER deoxygenated blood to the lungs Where does the left ventricle send blood - ANSWER oxygenated blood to the body/ peripheral circulation What are the three sources the right atrium receives blood - ANSWER above: superior vena cava below: inferior vena cava inside the heart m.: coronary sinus the blood in veins are considered what - ANSWER oxygen poor blood vessels leading AWAY from the heart are - ANSWER arteries blood vessels leading TO the heart are - ANSWER veins diastolic phase is during what part of the blood flow - ANSWER when the ventricles are relaxed diastolic pressure measures what - ANSWER the pressure in the arteries during the relaxation of the ventricles systolic phase is what part of the blood flow - ANSWER when the ventricles contract systolic pressure measures what - ANSWER the pressure in the arteries during the contraction of the ventricles cardiac cycle - ANSWER 60-100 beats/minute bradycardia - ANSWER less than 60 tachycardia - ANSWER greater than 100 sinoatrial node (SA) - ANSWER located right atrium pacemaker of the heart rhythms caused by the SA node are called what - ANSWER sinus rhythms ectopic pacemakers occur when - ANSWER when the SA node fails- they will be produced and take over as the pacemaker the impulse from the SA Node travels to where - ANSWER the atrioventricular node (AV) after the AV node is stimulated where does the impulse go - ANSWER bundle of His where does the impulse go after the bundle of His - ANSWER purkinje fiber system