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Devry BIOS 255n Week 1 Discussions Latest
The Heart (graded) |
The human heart is a four-chambered hydraulic pump. A hydraulic pump uses differences in pressure to move material from areas of higher pressures to areas of lower pressures. The pressure differences created by the heart move blood between the chambers and the circulatory systems. Let’s begin our discussion by identifying the chambers of the heart and their functions, the associated valves, and the names and general route of their associated great vessels.
The Contraction Cycle (graded) |
The contraction cycle of the heart is the series of events that occurs during one heartbeat. Each beat of the heart includes the contraction (systole) and relaxation (diastole) of the atria and then the ventricles. Let’s begin the examination of this cycle by discussing electrical conduction through the heart.
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Devry BIOS 255n Week 1 Discussions Latest
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