Quick Study Index, Module 3

Control of cardiac performance: Heart Rate

Factors affecting heart rate

Vagal Parasympathetic's Actions on the Heart

Schematic of vagal escape (Figure 2.01)

Sympathetic Nerve Actions on the Heart

Control of cardiac performance: Stroke Volume
Frank-Starling curve (Figure 2.02)
Major factors determining stretch of the myocardium

Factors contributing to afterload (Figure 2.03)

Definitions of Anrep and Bowditch effects

Comparing preload and afterload (Table 2.01)

Major factors determining the contractile state of the myocardium
Curves demonstrating altered (increased) inotropicity (Figure 2.04)

Inotropic agents

Loop Display - A Review (Figure 1.03)
Changing pump conditions: A, changing preload; B, changing afterload; C, changing contractile state (Figure 2.05)

Changing preload (end-diastolic volume) - A

Changing afterload - B

Changing contractile state - C

Mechanisms of cardiac hypertrophy (Figure 2.06)

Factors affecting stroke volume (Table 2.02)
Summary: Major factors contributing to cardiac output (Figure 2.07)

Information obtained by cardiac catheterization & angiography (Table 2.03)

Changes in gene expression in cardiac overload


Possible indices of cardiac performance

Factors affecting pre-ejection period (Figure 2.08)

Definitions: Intervals within electromechanical systole, Q to S2

Schematic: Intervals within electromechanical systole, Q to S2 (Figure 2.09)


Ejection fraction
Range of ejection fractions (Figure 2.10)

MUGA Scan of heart (Figure 2.11)


Right above: Walter B. Cannon, 1871-1945, sympathetic nervous system, etc.



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