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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.
MAJOR EVENTS DURING GASTRULATION - 1. There is rearrangement of cells due to morphogenetic movement of the cells of blastoderm. 2. The three primary germ layer g
discuss the importance of protozoa to humans
Define Autoclave - Food Microbiology? For sterilization, steam under pressure is generally employed using an instrument called autoclave. Figure illustrates the autoclave. Auto
Determine the bony walls of the Maxillary sinus: The Anterior wall of the sinus has thin compact bone above the apex of the canine teeth which may extend to the lateral pirifor
Biological catalysts à speed up chemical reactions in the body without being consumed in the process Reduce the activation energy needed for reactants to reach the transit
Define Briefly about the Pyridoxine vitamin B 6 ? Pyridoxine or vitamin B 6 is one of the B complex vitamins which prevents and cures dermatitis in rats fed on vitamin B 6 de
Some observations seen in this fever are: 1. Massive loss of lean body mass or muscle due to tissue breakdown (250-500 g muscle tissue is lost/day) leading to excessive nitro
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Q. During which meiosis division does ploidy reduction take place? And Does it ploidy reduction occur in mitosis? In the cell division by meiosis ploidy reduction occurs in mei
State about the Complex partial seizures Complex partial seizures, another type of focal seizure, originate most commonly in the temporal lobe. Complex partial seizures are cha
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