Archive | Tissues

Properties of the Cardiac Muscle | Cardiovascular System | Biology

The physiological properties of the cardiac muscle are: 1. Rhythmicity 2. Excitability 3. Contractility 4. Conductivity. Property # 1. Rhythmicity/Automaticity/Chronotropism: In the myocardium, automaticity is the ability of the cardiac muscles to depolarize spontaneously, without external electrical stimulation from the nervous system. i. Primary Pacemaker: The sinoatrial node (SA node) is a group of cells positioned on the wall of [...]

By |2018-01-25T05:50:18+00:00January 25, 2018|Cardiac Muscle|Comments Off on Properties of the Cardiac Muscle | Cardiovascular System | Biology
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Basic Properties of Cardiac Muscle (With Diagram) | Humans | Biology

The properties present in other muscle are also shown by the cardiac muscle. But it shows certain special features. 1. Rhythmicity: One of the main characteristic features of the cardiac muscle is that it can initiate its own impulse rhythmical­ly. This inherent rhythmical property is present throughout the cardiac muscle as evident from the electro-physiological studies of the single fibre [...]

By |2017-07-27T08:05:39+00:00July 27, 2017|Cardiac Muscle|Comments Off on Basic Properties of Cardiac Muscle (With Diagram) | Humans | Biology
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Structural Pattern of a Human Tooth (With Diagram) | Bone | Tissues| Biology

In this article we will discuss about the structural pattern of a human tooth with the help of a suitable diagram. Histologically, a tooth contains enamel, dentine, cementum and pulp (Fig. 1.58). Enamel is epithelial in origin and encircles dentine beyond the plane of gum. It is the hardest substance found in the body. Chemically, it has cal­cium phosphate in [...]

By |2017-07-24T10:56:50+00:00July 24, 2017|Tissues|Comments Off on Structural Pattern of a Human Tooth (With Diagram) | Bone | Tissues| Biology
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