12. The conduction system of the heart does not include:  

17. Small, ridge-like muscles, forming a criss-crossing network of muscles seen mostly in the walls of the ventricles (especially the right side) are called:

22. Use of vasodilators (medications that dilate vessels) in the normal heart (holding all other parameters stable) would typically:

19. Which chamber or structure/s would most easily (or likely) be compressed by a pericardial effusion (fluid in the pericardial sac)?

The nucleus is a structure that

The Figure 3 shown below demonstrates a number of membrane transports. Which of them is considered a facilitated transport?   

The structures present on _____ cells in order to move the cell through fluid is the _____.

Which of the following “organelle : function” relationships is incorrectly matched?

In an active transport cellular process

All of the following statements concerning the cell membrane are true, except one.  Identify the exception.