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Baroreceptor activity affects coronary vascular resistance reflexly. With carotid occlusion, baroreceptor hypotension leads to reflex adrenergic stimulation, increased metabolic activity and secondary vasodilation. When this is prevented by beta blockade, reflex coronary vasoconstriction secondary to carotid hypotension is unmasked. Alpha1 adrenoreceptor stimulation is capable of causing epicardial vasoconstriction in ischaemic myocardium, thereby influencing favourably the transmural distribution of blood flow to the subendocardium during exercise. Activation of chemoreceptors initially causes coronary dilation, a reflex that is mediated by vagi and can be abolished by atropine e.g. Bezold Jarisch reflex.
Explain Environmental Factors influencing food production? You probably know that no agricultural region has a constant climate throughout the year. This is true even in the tr
Mr. Smith is a 72 year male diagnosed with hypertension. Along with hypertension, Mr. Smith has been diagnosed with right-sided heart failure. The following are his list of medic
Rothera's Test It is highly sensitive for both acetoacetic and acetone. Although it is one of the oldest methods still it is widely used. Procedure: - Take about 5ml of
Explain the Life History of Lycophytes? Lycophytes have two separate and distinct generations in their life history that alternate with each other. The gametophyte stage is tin
What does vacuoles do? It is an organelle, located in the cell's cytoplasm, which is the site of protein synthesis. It is really a protein having of 2 parts. These 2 "parts"
How phytohormones help the development of parthenocarpic fruits? The Parthenocarpic fruits are those produced with no fecundation. Several plants naturally make parthenocarpic
Abscission - Effects of Plant Growth Regulators Abscission of leaves and fruit is one of the more obvious characteristics of senescence. Leaves do not fall simply because they
Phenolic compounds Gossypol: Gossypol is a toxic compound found in the cotton plant. It is concentrated in the cottonseed but can also be found in other parts of the cotton
Explain about the Microbiological Study of Water? Water is the basic need of life. River, streams and underground water is the prime source for water. However, disposal of indu
Disadvantages of Protozoa
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