Heart Anatomy Flashcards
What structure separates the left ventricle from the great vessel leaving the heart on the left side?
Aortic Valve
What structure will blood flow directly into after leaving the inferior vena cava?
Right Atrium
The conductive cells of the SA node are located in the muscle tissue of the ____________________ .
Right Atrium
T or F: Conductive cells of the heart have a stable resting membrane potential.
False; The conductive cells have leak-like channels that allow cations to diffuse into the cell at RMP.
Which of the following structures will allow depolarization of SA node cells to excite surrounding muscle cells?
Gap Junctions
Which substance would MOST likely be able to pass directly through a plasma membrane WITHOUT a protein channel or carrier?
Carbon Dioxide (CO2)
The heart is __________ to the diaphragm
Superior
The heart is __________ to the sternum.
Posterior
The heart is __________ to the trachea and esophagus.
Anterior
The visceral pericardium (epicardium) is an example of a serous membrane. It consists of two layers: a layer of loose connective tissue and a layer of ____________?
Pericardium
Blood is in direct contact with the __________.
Endocardium
Which of the following structures does blood flow into AFTER the left ventricle?
Aorta
Which of the following structures is associated with oxygen-rich blood?
Pulmonary Vein
Which chamber is likely to have the thickest myocardium layer? (Hint – think of where the blood is being pumped to)
Left Ventricle
In some genetic conditions, the cusps of the left AV valve do not correctly overlap. What will occur when the left ventricle contracts in this condition?
Blood will flow in multiple directions
