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PINEAL GLAND (EPIPHYSIS CEREBRI) -
Hormone - Melatonin concentration in the blood appears to flow a diurnal (day-night) cycle as it arises, in the evening and through the night and drops to a low around noon. Because of this light mediated response, the pineal gland may act as a kind of "biological clock" which may produce circadian rhythms (variations following a 24 hour cycle).
Girls blind from birth attain puberty earlier than normal, apparently because there is no inhibitory effect of melatonin on ovarian function.
Define Factors that effect birth weight and gestational duration? A WHO review has identified 43 factors that influenced birth weight and gestational duration. They are grouped
Q. What is the kinds of asexual reproduction that occurs in hydras? Hydras reproduce asexually by budding.
Steroid and Thyroid Hormones Cytoplasmic receptors for steroids are proteins with two subunits that bind to the steroid molecules. When both receptor sites are occupied by the
Two chromosomes in a cell have identical length and centromere position yet are not homologous, what is different about them
Q. Explain the process of Angioplasty? Inflation of stenotic segment causes stretching of the vessel, fracture of the intimal plaque, partial disruption of the media and adven
Describe about Investigative Tools and their Optimal Use ? The investigative tools that are available for diagnosis of CHD include ECG, chest X-ray, 2D and Doppler echocardiog
Why is the occurrence of eyelids in amphibians in comparison to their absence in fishes and adaptation to terrestrial life? Eyelids associated to lacrimal glands protect and ke
WHY OBELIA IS OF SPECIAL INTEREST IN ZOOLOGY
Soybean protein isolates: Soy protein isolates are the most pure and refined soy protein available. Isolated soybean proteins (ISP), or soybean protein isolates, are the mos
Q. Which are the organs of the excretory system? The excretory system is formed of ureters (two), kidneys (two), bladder and urethra.
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