Honors anatomy Flashcards
The P wave of a normal electrocardiogram indicates
Atrial depolarization
When viewing a dissected heart, it is easy to visually discern the right and left ventricles by
________.
Noticing the thickness of the ventricle wall
Select the correct statement about the function of myocardial cells.
The entire heart contracts as a unit or not at all
Which of the following is not part of the conduction system of the heart?
Av valve
The —— valve of the heart has three valves with chrodae tendineae
Tricuspic
A condition of rapid and irregular or
out-of-phase contraction of heart
muscle cells.
Fibrillation
Which of these vessels receives blood during ventricular systole
Both the aorta and pulmonary trunk
An abnormally fast heart rate
Tachycardia
The triscupid valve is closed
When the ventrivle is in systole
Death of heart muscles
Infraction
During contraction of heart muscle cells
some calcium enters the cell from the extracellular space and triggers the release of larger amounts of calcium from intracellular stores
The inner lining of the heart
endocardium
The source of blood carried to the capillaries in the myocardium would be the
Coronary arteries
Hemorrhage With a large loss of blood causes
A lowering of blood pressure due to change in cardiac output
Prevents blackflow into the left ventricle
Mitral valve
Prevents blackflow into the right ventricle
Pulmonary valve
To auscultate the aortic
semilunar valve, you would place your stethoscope in the
second intercostal space to the right of the sternum
Blood within the pulmonary veins returns
to the
left atrium
When heart valve replacement is required, the——-
valve is
the most likely valve that needs to be replaced.
Mitral
The pacemaker rhythm that determines heart rate is
called——-
rhythm.
Sinus
Prevents backflow into the left
ventricle.
Aortic valve
