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Little lipophilic (lipid-soluble) hormones distribute across the plasma membrane and then interact with intracellular receptors in the nucleus/cytosol. The receptors are all structurally associated, being part of the nuclear receptor super family. The resulting hormone-receptor difficult frequently binds to regions of the DNA and affects the transcription of particular genes. The Small lipophilic hormones with intracellular receptors includes the steroid hormones which are synthesized from cholesterol for instance the female sex hormones estrogen and progesterone, thyroxine that is produced by thyroid cells and is the principal iodinated compound in animals, retinoic acid that is derived from vitamin A, and vitamin D that is synthesized in the skin in response to sunlight.
figure: Cellular signaling. (a) Endocrine, (b) paracrine, (c) autocrine.
Food Pyramid The diabetes food pyramid divides food into six groups. These groups vary with each other on the basis of size occupied in the pyramid. The largest i.e. grains, br
Hypertensive emergencies should be treated within one hour. Hypertensive urgencies may be treated more slowly. The term accelerated malignant hypertension is used when retinal haem
Pre-Embryonic Development We had said in the starting of the unit that prenatal development can be divided into two phases, embryonic and foetal. The embryonic phase of devel
Explain Gene Expression - Nutrient Gene Interactions? The last two decades have witnessed tremendous development in our understanding of the cellular processes at the molecular
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Explain the term Indirect Calorimetry? This method estimates energy expenditure by determining the oxygen consumption and carbon dioxide production of the body or a cell over a
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Write the meaning of balanced diet. 1) Balanced Diet means diet which contains a variety of foods in such quantities and proportions that the need for energy, proteins, vitami
Q. How are the three major arthropod classes characterized according to the number of limbs? Most crustaceans have five pairs of limbs. Arachnids present four pairs and Insects
What is Metabolism ? Metabolism is usually defined as the sum of the chemical processes required to sustain life. These processes, called metabolic pathways, are catalyzed by
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