The regulation of the heart is effected through the afferent (centripetal) and efferent (centrifugal) nerves of the heart (Fig. 7.79). The afferent nerves are: i. From the heart through the vagus nerve and from the aortic arch, the aortic nerve. ii. From the heart through the inferior cervical and first four thoracic ganglia and first […]
Nerves of Human Heart and their Action (With Diagram) | Biology
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Cardiac Output: Control and Methods | Heart | Animals | Biology
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In this article we will discuss about:- 1. Introduction to Cardiac Output 2. Normal Values of Cardiac Output 3. Distribution 4. Control 5. Methods of Measuring 6. Factors Influencing. Introduction to Cardiac Output: At each beat certain amount of blood is pumped out by each ventricle into the circulation. This is called cardiac output. Two […]
Heart Sounds: Causes & Methods | Cardiovascular System | Humans | Biology
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Introduction to Heart Sound: There are two classical sounds of heart in humans, known as the first and the second sounds (Fig. 7.56). They can be easily detected with a Stethoscope. Two other sounds have also been described – the third and the fourth – which, though difficult to detect clinically, are constantly found in […]
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