During isovolumetric contraction, the pressure in the ventricles _____________________.

Which of the following does not move substances across capillary walls?

The velocity of the blood flow decreases if

Blood often flows into a capillary bed from

Intercalated discs are specialized contact points between cardiac muscle cells that join the cell membranes with gap junctions and desmosomes.  Which is not a function of an intercalated disc?

Which of the blood vessels receives blood directly from the right ventricle?

Which of the following is not a type of capillary?

Assume that one ventricle of a child’s heart has an EDV of 90ml, an ESV of 60 ml, and a cardiac output of 2.55 L/min.  What are the child’s stroke volume (SV), ejection fraction, and heart rate (HR)? SV = EDV – ESV CO = bpm x SV Ejection Fraction = SV / EDV

Electrical signals pass quickly from one cardiomyocyte to another through the _________________ of the intercalated discs.

Blood flows faster in a venule than in a capillary because venules