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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.
Heat-shock Response When growing plantlets or tissues of plants are shifted to 42°C and above, the synthesis of normal proteins rapidly declines and instead a set of new prote
Describe Congenital Pulmonary Stenosis? The murmur present since birth. PS may be valvular, sub-valvular, or supravalvular. An obstruction may occur within the RV cavity by an
Define the Composition of Potato Dextrose Agar? This media is used for cultivation of yeasts, fungi and moulds. Potato (Peeled) - 200.0 gm Dextrose - 20.0 gm Agar - 15
GONADS - They develop from the mesoderm of the embryo. The gonads are the sex glands; the ovaries and the testes. They produce ova and sperms respectively i.e. cytogenic in
Q. Show Clinical symptoms of galactosemia? Clinical symptoms of galactosemia deficiency is found to appear early in infancy. Some infants are born with cataract, jaundice and
Q. What are the differentiations of the cell membrane? In some kind of cells, the cell membrane presents differentiations that are necessary for the specific functions of the c
Biology is becoming a more quantitative science, a trend that has motivated and been recently spurred by advances in computing power and data-gathering technologies. Nowhere is th
Inferior alveolar nerve and artery A branch of mandibular nerve, it enters the mandibular foramen on the medial aspect of the ramus above the lingula and exits on the lateral a
Citric Acid Cycle The citric acid cycle, also known as tricarboxylic acid (TCA) cycle, lies at the heart of aerobic metabolism. it is involved in the breakdown of all three maj
What is Waist-to-Hip Ratio? Waist-to-Hip Ratio (WHR) is defined as the measurement of waist circumference divided by hip circumference. For example, if a person's waist measure
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