True of False Heart disease is caused by a disturbance in the function of the cardiac pump
the thin, transparent outer layer of the heart wall; also called the visceral layer of the serous pericardium
the middle muscular layer of the heart wall
the membrane that lines the cavities of the heart and forms part of the heart valves
True of False The right and left atria receive venous blood returning to the heart
True or False The left ventricle pumps blood through the pulmonary artery to the lungs.
False, the right ventricle pumps blood through the pulmonary artery to the lungs.
True or False Once blood is oxygenated by the lungs it returns to the left atrium of the heart
True or False The left ventricle pumps oxygen rich blood throughout the body
True or False Blood returning to the heart after circulation is returned to the left atrium
False, blood returning to the heart after circulation is returned to the right atrium
True of False The "right heart" circulates blood into the pulmonary artery and throughout the lungs (pulmonary circulation)
True of False The "left heart" pumps blood into the aorta for distribution to the various organs and tissues in the body (systemic circulation)
True of False Contraction of cardiac muscle reduces the size of the atria or ventricles, raising the pressure of the blood within the compressed chambers, which squeezes blood out of the chambers.
The flaplike heart valve located between the atrium and ventricle
The cup-shaped valved located between the ventricles and the aorta or pulmonary artery
True or False When the heart relaxes in diastole, the chordae produce tension on the valves and pull the arterioventricle valves apart.
True of False The right coronary artery divides into two parts
False, The left coronary artery divides into two parts
True or False The leading cause of death for smokers is lung cancer
False, the leading cause of death for smokers is heart disease
the right upper chamber of the heart that receives blood from the venae cavae and coronary sinus
the left upper chamber of the heart that receives blood from the pulmonary veins
the chamber on the right side of the heart that receives venous blood from the right atrium and pumps it into the pulmonary trunk
the chamber on the left side of the heart that receives arterial blood from the left atrium and pumps it into the aorta
True of False The pulmonary artery is unique because it does not carry oxygenated blood, it carries blood from the heart to the lungs
True of False The pulmonary vien is unique because it carries oxygenated blood, it carries blood back to the heart from the lungs
A blood vessel that carries blood back to the heart.
a blood vessel that carries blood from the heart to the body (oxygenated)
True or False Coronary arteries originate off the aorta
Sinoatrial Node (SA)
the pacemaker; highly specialized neurological tissue, embedded in the wall of the right atrium, responsible for initiating electrical conduction of the heartbeat, causing the atria to contract and firing conduction of impulses to the AV node
Atrioventricular Node (AV)
This area at the junction of the right atrium and ventricle receives the stimulus from the sinoatrial node and sends the impulse to the ventricles through the bundle of His.
Bundle of HIS
a bundle of modified heart muscle that transmits the cardiac impulse from the atrioventricular node to the ventricles causing them to contract
End of the conduction system; sends impulses through the ventricles, causing them to contract
True or False Systolic hypertension is a greater indicator for the development of heart disease
False, diastolic hypertension is a greater indicator for the development of heart disease
True of False Systolic pressure is highest during ventricular contraction
True or False Diastolic pressure is highest when the ventricles are relaxed
False, diastolic pressure is lowest when the ventricles are relaxed
circulation by secondary channels after obstruction of the principal channel supplying the heart
occurs when the normal rhythmic contractions of the atria are replaced by rapid irregular twitching of the muscular heart wall
Abbreviation for electrocardiogram, which is a record of the electrical activity of the heart.
The P wave reflects the initial wave of depolarization associated with atrial systole.
the contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery
the second wave on the EKG that begins as a downward deflection, continues as a large, upright, triangular wave, and ends as a downward wave; represents rapid ventricular depolarization
the third, dome-shaped upward deflection of the EKG that represents ventricular repolarization, and occurs just as the ventricles begin to relax
Time required for conduction from the SA node to AV node. The time between atrail and ventricular deplarization. This is normally 0.12 to 0.2 seconds.
The only electrical connection between the atria and ventricles. Also known as the bundle of HIS
fibrillation of heart muscles resulting in interference with rhythmic contractions of the ventricles and possibly leading to cardiac arrest
during fetal development - interarterial opening which allows blood to flow freely from the right to left atrium - bypassing pulmonary circulation
abnormal narrowing of the opening into the pulmonary artery from the right ventricle
abnormal narrowing of the aortic valve
Tetralogy of Fallot
A congenital heart defect producing cyanosis. Characterized by four symptoms: pulmonary stenosis and ventricular septal defect and malposition of the aorta over both ventricles and hypertrophy of the right ventricle
Patent ductus arteriosus
a ductus arteriosus that failed to close at birth
a severe disease chiefly of children and characterized by painful inflammation of the joints and frequently causes damage to the heart valves
Rheumatic Heart Disease
damage to the heart muscle or heart valves caused by one or more episodes of rheumatic fever
True or False Prophylactic penicillin may prevent recurrent rheumatic fever
An infection of a heart valve usually caused by a bacterial infection.
True or False Endocarditis is especially problematic for individuals who may have previous heart valve damage
Name the six most significant factors for heart disease: