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Regulation of Heart
The number of electrical impulses initiated by the SA node is primarily the result of its innervation by fibers from both sympathetic and parasympathetic branches of the autonomic nervous system. Sympathetic branch have a positive chronotropic effect (increase in rate) while parasympathetic branch have a negative chronotropic effect (decrease in rate). Parasympathetic innervations occurs by way of the vagus nerve. Sympathetic nerve fibers, when stimulated release norepinephrine at the nerve endings and comprise what is called the adrenergic system.
The central nervous system regulate the heat through the cardiac center in medulla and the hypothalamous.
FATS ARE OF TWO TYPES (a) Hard Fats They are true fats which are solid at room temperature of 20 o C. It is due to presence of long chain saturated fatty acid
Q. What is cross contamination? Cross contamination is the passage of micro-organisms from one person to another via any route direct or indirect.
Limiting Factor - Ecosystem In all ecosystems one factor, usually abiotic, limits the growth of organisms and is therefore called a limiting factor. The limiting factor is one
Classification of the phylum protozoa
How do you convert 147.05mg% of plasma glucose to mM/L please show work.
In general what is the cause of the aneuploidies? In general the aneuploidies are caused by impaired assortment of chromosomes during meiosis. For instance, when the homologous
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Q. What is mechanical digestion? In molluscs, earthworms, arthropods, birds and vertebrates, in general, which organs respectively participate in this type of digestion? Mechan
Tumor Suppressor Genes Tumor suppressor genes or anti-oncogenes generally inhibit cell division in cooperation with proto-oncogenes. The very existence of these genes prevent
Q. What is the kinds of asexual reproduction that occurs in hydras? Hydras reproduce asexually by budding.
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