RTE 2785: Exam III UPDATED QUESTIONS AND CORRECT ANSWERS

RTE 2785: Exam III UPDATED
QUESTIONS AND CORRECT ANSWERS
Body circuits - CORRECT ANSWER 2 main: pulmonary and systemic;

1 heart: coronary



pulmonary circuit - CORRECT ANSWER brings blood to (deoxygenated) and from
lungs (oxygenated)



systemic circuit - CORRECT ANSWER delivers blood throughout the body



coronary circuit - CORRECT ANSWER delivers blood to and from the heart muscle
(myocardium); functions independently of the body with its own blood supply



auscultation - CORRECT ANSWER listening for sounds in blood vessels or other body
structures, typically using a stethoscope



pericardium - CORRECT ANSWER Double-layered membrane surrounding the heart.

visceral and pareital



Heart chambers - CORRECT ANSWER 4: Right & Left atrium;

Right & Left ventricle



what divides the atrium and ventricle? - CORRECT ANSWER interatrial septum &
interventricular septum



Foramen ovalis - CORRECT ANSWER hole in the interatrial septum that closes after
birth. aka "Fossa ovalis" if closed

,How many valves in the heart? - CORRECT ANSWER 4: Right & left atrioventricular
valves (AV) and

pulmonary & aortic semilunar valves (SL)



What is the purpose of the heart valves? - CORRECT ANSWER to prevent back-flow
of blood



Tricuspid valve - CORRECT ANSWER valve between the right atrium an the right
ventricle. aka Right AV valve



Bicuspid valve - CORRECT ANSWER valve between the left atrium and the left
ventricle. aka left AV aka mitral valve



pulmonary valve - CORRECT ANSWER SL valve positioned between the right
ventricle and the pulmonary artery



aortic valve - CORRECT ANSWER SL valve separating the aorta from the left
ventricle that prevents blood from flowing back into the left ventricle.



systole - CORRECT ANSWER contraction phase



diastole - CORRECT ANSWER relaxation phase



oracle - CORRECT ANSWER flappy piece on atria that acts as an extra reservoir



cardiac skeleton - CORRECT ANSWER aka fibrous; dense band of connective tissue
that are interwoven throughout the heart. 3 purposes



Purpose of cardiac skeleton - CORRECT ANSWER 1. stability;

2. prevents overexpansion;

, 3. assists system with conbtractions



Pulmonary blood flow - CORRECT ANSWER deoxygenated blood from systemic
circuit--> SVC & IVC--> Right atrium--> Right AV Valve (tricuspid)--> Right ventricle-->
Pulmonary Artery--> LUNGS--> Oxygenated blood from pulmonary circuit--> Left Atrium--
> Left AV Valve (bicuspid)--> Left Ventricle--> Aorta--> around the BODY



Chardae Tendinae - CORRECT ANSWER webbing of tissue attached to the papillary
muscles of the heart



What is the function of the lungs? - CORRECT ANSWER to provide oxygen for the
heart



mitral valve prolapse - CORRECT ANSWER blood flowing back up into the left
atrium due to weak left AV valve



3 parts of the aorta - CORRECT ANSWER ascending, arch, and descending



stroke volume - CORRECT ANSWER amount of blood the ventricle pumps out in a
single heart beat (SV)



cardiac output - CORRECT ANSWER amount of blood pumped out of ventricles per
minute;
SV x heart rate



How many heart sounds are there? How many are audible? - CORRECT ANSWER 4,
2 audible: 2 opening semilunar and closing of AV valves are audible;

2 relaxed atria without valve involvement, no sound



cardiac cycle - CORRECT ANSWER A complete heartbeat consisting of contraction
and relaxation of both atria and both ventricles;