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heaping water up in a glassplace a drinking glass in a shallow pan or on a saucer rub the top edge of the glass with a dry cloth pour water into the
holding water in a sievepour some oil over the wire mesh of a kitchen sieve and shake out the overload so that the holes are open cautiously pour
floating a razor bladesecure a used razor blade of the double edge type try floating it on the surface of water again watch the surface and see if
lifting the water surface bend the pointed end of a pin or use a piece of fine wire to make a hook file the point of the hook unless it is very sharp
determine the hormone secreted from the parathyroid glandthe parathyroid gland secretes parathormone the amount secreted is strongly influenced by
floating a needle on waterthoroughly dry a steel needle place it on the tines of a dinner fork and gently smash the surface of the water in a dish
floating in different liquidsobtain a tall slender glass jar test tube or bottle and the following liquids mercury carbon tetrachloride water and
specific gravity of a liquid not mixing with waterpour oil into an open glass tube partially immersed in water until it forces water as far as the
define goitre - thyroid glandgoitre or the enlargement of thyroid gland is one of the critical manifestations of iodine deficiency iodine as you must
explain the hypersecretion hyperthyroidism or thyrotoxicosisthis condition generally occurs in adult life this is commonly caused by hyperplasia of
explain the hyposecretion or hypothyroidism in adult lifedecreased secretion of thyroid hormone results in the development of myxoedema there is a
explain the hyposecretion or hypothyroidism during infancydecreased secretion of thyroid hormone results in the development of the condition known as
explain the regulation of thyroid hormone secretiontsh from the anterior pituitary gland controls the secretion of thyroid hormones thyrotropin
drinking straw hydrometerprocure a drinking straw or a stout natural straw about 20 cm long if it is not water-proof dip it in melted candle wax and
a floating experiment with different kinds of woodsecure a cork and pieces of wood like as maple mahogany and ebony place them in a pan of water and
define antidiuretic hormone - posterior pituitaryantidiuretic hormone or adh also known as vasopressin is another polypeptide containing 9 amino
an experiment with a floating candleput a nail in the lower end of a candle the nail should be just the right weight to make the candle float with
define oxytocin hormone - posterior pituitaryoxytocin is a polypeptide containing 9 amino acids an oxytoxic agent is a substance that causes the
floating bodiesfill the overflow can with water and let it run out unless the surface is level with the spout select a piece of wood that floats half
define factors for hypothalamic control of anterior pituitary gland thyrotropin releasing factor trf which causes release of tsh corticotropin
define hypothalamic control of anterior pituitary glandthe hypothalamus controls many of the automatic functions of the body it secretes a series of
sinking bodiesfill the overflow can with water to the level of the spout select a stone that will go inside the overflow can attach a string to the
how to make an overflow can and catch bucketthese are useful for the study of archimedes principle which controls floating and sinking to make an
define the prolactinprolactin is synthesized in lactotroph cells of anterior pituitary gland during pregnancy and during the entire period of milk
how to make a devil diver cartesian diverfind a tall glass jar with a quite wide mouth wrap a few turns of copper wire about the thin part of the