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Explain Sinus Arrhythmia - electrocardiogram
In few adults and most children, there is raise in heart rate during inspiration and a decrease during expiration. This rhythm is most generally observed with breathing due to fluctuations in parasympathetic vagal tone. Throughout inspiration, the chest expands making a suction force that results in greater backflow of blood into the atria from the veins.
Greater filling of right atrium results in higher heart rate, probably by stretching the SA node.
Define Protein Hormone and Steroid Hormone Further, hormones are of two different chemical types - protein hormone and steroid hormone. Most of the hormones belong to the categ
Another aneroid barometer Stretch a piece of thin rubber in excess of the mouth of a small glass jar. Wind thread or string over the rubber to secure it and then put a ring of
Oil extraction : Extraction of oil from the prepared oilseeds can be done by one of the following methods: (i) traditional method: ghani, (ii) Improved methods:
Explain what Diffusion is? Diffusion, we learnt is a simple process of movement of individual molecules from one region to another. Figure illustrates passive transport where m
how do they protecte themselves
Explain the Filiform papillae These are long and slender and are the smallest of the three types of papillae. They are found to be most numerous on the edges and anterior two t
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Define the term - Soil protozoa These are unicellular but larger than bacteria, the size varying from a few microns to a few centimeters. The protozoa exist in all aerable soil
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how does reproduction help the white lipped tree frog survive
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