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Q. What is the use of Adrenergic Receptor?
Adrenergic Receptors are also subdivided into 2 major categories: ALPHA α - or- BETA β
In general, when NE (E) binds to alpha receptors -> excitatory
beta receptors -> inhibitory (with notable exceptions: heart β1) Beta-1 receptors are found on heart -> NE (E) stimulates HR and SVBeta-2 receptors are found on lungs and some viscera -> (-) NE serves to dilate airways and slow down GI tract activity. Note that non-specific β (1,2) blockers decrease HR and BP, but can also constrict airways (undesirable effects).
Fate Map - Gastrulation in Chick All the three main germinal layers (ectoderm, mesoderm, endoderm) are made from cells initially located in the epiblast in area pellucida, hen
Q. Are the veins or the arteries constituted of more muscle tissue? How different are the walls of these two kinds of blood vessels? The arterial system has thicker muscle wall
Considering the hybridization in a trait like the color of the flowers of a given plant species (red/yellow) conditioned by a pair of different alleles in relation to complete domi
what is meant by "pelagic"?
Q. Why do cells of the nephron tubules present a great amount of mitochondria? The cells of the tubule wall have high number of mitochondria because many substances are secrete
What are the structures that form the external ear? What is its function? The internal ear comprises the pinna, or auricle, and the auditory canal. Its function is to conduct t
While describing normalising selection it was said that in uniform environments selection limits the variability of populations and evolves a genetic homeostasis. The type of selec
Biological Responses Controlled by Phytochrome Phytochrome responses are those which are controlled reversibly by red and far-red light. These can be broadly categorised as:
What is the relation between secretion of parathormone and the calcium blood level? The parathormone enhances the calcium blood level as it stimulates the resorption (remodelat
INSULIN Linear polymer of b-D-Glucose. Insulin is small-sized (25 - 35 residues) fructosan homopolysaccharide which is a reserve carbohydrate present in roots, tubers and
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