ECG Assessment Heart Physiology Nervous System Regulation

Anatomy & Physiology 122 Heart Lecture Part II

Cardiac Muscle Contraction ,[object Object],[object Object],[object Object],[object Object],[object Object]

Heart Physiology: Sequence of Excitation ,[object Object],[object Object],[object Object]

Heart Physiology: Sequence of Excitation Figure 18.14a

Heart Excitation Related to ECG Figure 18.17

Electrocardiography ,[object Object],[object Object],[object Object],[object Object],[object Object]

Electrocardiograms The electocardiogram or ECG is a major diagnostic tool for the assessment of the health of the heart. It is a measurement taken at the surface of the skin which reflects the electrical phenomena in the heart when the SA node triggers the electrical sequence that controls heart action .

Electrocardiography Figure 18.16

Heart Sounds ,[object Object],[object Object],[object Object]

Cardiac Cycle ,[object Object],[object Object],[object Object]

Phases of the Cardiac Cycle ,[object Object],[object Object],[object Object]

Phases of the Cardiac Cycle ,[object Object],[object Object],[object Object],[object Object],[object Object]

Phases of the Cardiac Cycle ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],Regulation of Heart Rate: Autonomic Nervous System

Atrial (Bainbridge) Reflex ,[object Object],[object Object],[object Object]

Chemical Regulation of the Heart ,[object Object],[object Object],InterActive Physiology ® : Cardiovascular System: Cardiac Output PLAY

Congestive Heart Failure (CHF) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Developmental Aspects of the Heart ,[object Object],[object Object],[object Object],[object Object],[object Object]

Developmental Aspects of the Heart Figure 18.24

Developmental Aspects of the Heart ,[object Object],[object Object],[object Object]

Examples of Congenital Heart Defects Figure 18.25

Age-Related Changes Affecting the Heart ,[object Object],[object Object],[object Object],[object Object]

ECG Assessment Heart Physiology Nervous System Regulation

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ECG Assessment Heart Physiology Nervous System Regulation