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Bonus Question: Describe the path a blood cell would take as it travels from the lungs to the aorta. Include all valves, chambers, and vessels. 

The image below shows an artificial pacemaker a common medical device. What tissue is it replacing?

An increase in viscosity of the blood will _____________ SV (stroke volume) resulting in a _______ in CO (cardiac output).

1. Name the structure  2. Name the structure (chamber) 3. Name the structure (chamber)

The sinoatrial node sets the pace of the heart, what causes these nodal cells to rapidly depolarize after reaching threshold?

Describe one structural difference between an artery and a vein

A patient is given a calcium cannel blocker as a treatment for hypertension. These drugs are

Describe the events of each of the 5 phases of cardiac cycle, include contraction cycle, opening and closing of valves, heart sounds, movement of blood, filling of the chambers, and relative pressures in the chambers and great arteries. hint: the 5 phases, 1) atrial contraction, 2) isovolumetric contraction, 3) ejection, 4) isovolumetric relaxation and 5) late diastole.

1. What is the hematocrit percentage of this capillary tube? 2. The sample is taken from a male – is it within normal range?    

Name the labeled vessels: