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Extra credit: Review question: The physiological significance of the pause in electrical conduction at the atrioventricular node is to ____________________________.

This figure is demonstrating glucose

The _________________________ is a target tissue for adrenocorticotropic hormone.

Which of the following heart rates would be most likely observed in an individual who’s parasympathetic nervous system was unable to influence sinoatrial node generation of action potentials?

The graph above demonstrates the influence of the which nervous system on the SA node action potential firing rate? Hint: Don’t overthink this. LOOK at the graph. It tells you everything you need!

  Which ion channel is open and allowing ions to diffuse across the cell membrane during the portion of the graph labeled “C.”

Red blood cells lack a nucleus and other membrane-bound organelles, so they don’t live very long (sounds bad, right?). What benefit does this provide to red blood cells?

extra credit: Fill in the blank: What type of infection might you be fighting if you a differential count shows elevated neutrophil counts? 

extra credit: Fill in the blank: If cardiomyocytes separate from one another during contraction, what important structure is missing? 

Which blood cell is responsible for initiating the stopping of blood loss from a damaged vessel?