Exam 20 Flashcards
Blood returning to the heart from the systemic circuit first enters the
Right atrium
A heart attack could come from the blockage of a/an:
Coronary artery
The earlike extension of the atrium is the:
Auricle
The right ventricle pumps blood to the
Right and left lungs
The left ventricle pumps blood to the
Aorta
_____________ carry blood away from the heart.
Arteries
The _________ covers the outer surface of the heart.
Epicardium
________ are the abnormal heart sounds caused by turbulent flow through faulty valves.
Murmurs
The bicuspid or mitral valve is located
Between the left atrium and left ventricle
The tricuspid valve prevents backward flow into the
Right atrium
The muscle layer of the heart is the ________
Myocardium
The _________ valve prevents backward flow into the left atrium
Bicuspid
The heart is roughly the size of
A man’s clenched fist
Depolarization of the ventricles is represented on an electrocardiogram by the
QRS complex
The P wave of the electrocardiogram is a signal from
Depolarization of the atria
The electric impulses of the heart is distributed into the heart muscle by the
Purkinje fibers
As a result of the long refractory period in the cardiac action potential, cardiac muscle cannot exhibit
Tetany
The semilunar valve that passes deoxygenated blood:
Pulmonary valve
Attach directly to the heart valves to prevent them from prolapsing during systole
Chordae tendonae
Intercalated discs serve to transfer ________ from cell to cell.
Ionic currents, action potentials, the force of contraction, and electrical signals
In the conduction pathway of the heart, what connects the SA and AV nodes?
Internodal pathway
Blood flowing through the aortic valve has just left the:
Left ventricle
The lungs receive blood vessels that just left the:
Right ventricle
Thickest myocardium is:
In the left ventricle
Arteri-
An artery
Athero-
Fatty degeneration
Aur-
Ear
Brachi-
Arm
Brandy-
Slow
Cardi-, Cardio-
Heart
Diastol-
Relax
Hemi-
Half
Semi-
Half
Systol-
Contract
Tachy-
Swift
-ac
Pertaining to
-form
Shape
-gram
Record
Ejection fraction is typically a measurement of blood leaving the:
Left ventricle
Visualizing the cardiac valves at work is BEST done by:
Echocardiogram
At the end of a ventricular relaxation, the ventricles will contain the greatest amount of blood. This volume is known as
End systolic volume
The force the heart must overcome to eject blood is the
Afterload
The difference between the end diastolic volume and the end systolic volume is the
Stroke volume
When you multiply stroke volume by the number of times the heart beats per minute, you can find the
Cardiac output
Meghan had a heart murmur when she was a newborn infant, and an ultrasound had shown she had blood leaking from her right atrium to her left atrium, caused by a persistent
Foramen ovale
The innermost layer of the heart is the
Endocardium
If your girlfriend says that your singing her favorite song “tugs on her heartstrings”, she probably is not really thinking about her _____________ ______________.
Chordae tendineae
Oxygenated blood passes through a semilunar valve known as the
Aortic valve
Aravind was diagnosed with aortic stenosis. Without surgical repair, it would put grave strain on the ________ restricting outflow and requiring increased muscular force to push blood into systemic circulation.
Left ventricle
The end systolic volume is the
Amount of blood remaining in each ventricle following contraction
Cardiac output is
The amount of blood pumped by each ventricle during one minute
In the developing fetus, blood is shunted away from the lungs through the __________________, which connects the pulmonary trunk (artery) to the aorta.
Ductus arteriosus
An EKG best gives a depiction of:
Electric activity of the heart
A reversible lack of blood flow to tissues is best referred to as a/an
Ischemia
In the event of an ectopic pacemaker, the electrical activity is being generated somewhere other than the:
SA node
The visceral pericardium is also known as the _______________.
Epicardium
The muscular ridges inside the ventricles are called:
Trabeculae carnae
Treppe formation of muscle contraction happens in the heart because
Calcium stays in the cytoplasm after contraction
KNOW HOW TO LABEL THE HEART
