Cardiovascular System: The Heart
The sequence of pericardial layers from superficial to deep is the
fibrous, ________, and
The right atrium receives blood from the superior vena cava, inferior
vena cava, and
A heart valve that fails to close properly is considered to be
________ or to exhibit
Irregular ridges in the walls of the ventricles are called ________.
The walls of the ________ are thicker so as to push blood through the systemic circuit.
The ________ valve prevents backflow of blood from the left ventricle to the left atrium.
mitral, left atrioventricular, or bicuspid
The atrioventricular valves cannot be inverted because attachment of ________.
The first heart sounds of "lub-dup" are produced by the closing of the right and left ________.
The ________ of the heart prevents overdilation of the valve openings.
The ________ are subdivisions of the atrioventricular bundle located
within the upper half of
the interventricular septum.
bundle branches or crura
The ________ artery supplies the left atrium and the posterior part of the left ventricle.
Gap junctions and fasciae adherens are associated with ________ that
join adjacent cardiac
Uncoordinated contractions of the ventricle, known as ________,
result from irregularities in
conducting system behavior.