BIOS255nDeVryAllWeekDiscussions Downloading is very simple, you can download this Course here: http://mindsblow.us/question_des/BIOS255nDeVryAllWeekDiscussions/4339 Or Contact us at: email@example.com BIOS255nDeVryAllWeekDiscussionsBIOS255 BIOS255nWeek 1 Discussion 1 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. BIOS255nWeek 1 Discussion 2 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. BIOS255nWeek 2 Discussion 1 Blood Vessel Structure (graded) Let’s start by discussing the structure of our blood vessels. Let’s each take a characteristic of (1) arteries, (2) veins, or (3) capillaries. Build upon what your classmates say to enable us to have a more full understanding of these vessels that are essential for our existence. BIOS255nWeek 2 Discussion 2 Blood Flow Dynamics (graded) Cardiac output is the amount of blood ejected from the left or right ventricle in any given minute. Cardiac output must be maintained in order to keep sufficient blood flow through the capillaries. Identify the factors that directly affect blood flow in the circulatory system. BIOS255nWeek 3 Discussion 1
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