us, which of the following is A. pars nervosa B. pars distalis pars hypothalamus
ID: 3483986 • Letter: U
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us, which of the following is A. pars nervosa B. pars distalis pars hypothalamus D. pars infundibuli E. pars proximalis 49. The posterior pituitary has a direet connection with neurons B. is controlled by re C. produces h D. stores lipotropins is not related to fluid balance in 0. The hypoth alamohypophysial portal B. posterior pituitary to the hvhamus.e of the hypothalas that regulate other endocrine yads A. anterior pituitary to the h B.Ptalamus to the anterior pituitary C. hyothalamus to the posterior pituitary. E. anterior pituitary to posterior pituitary. hypothalamus cae 1. A function of the hypothalamoh ADH from the hypothalamus to the anterior e releasing hormones from the h ypophysial ction potentials to the posterior pituitary causing the release of oxcstocin the elease of insulin from the anterior pituitary E. form a vascular connection from the hypothalamus to the posterior pituitary the s2 Which hormone A. glucagon B. prolactin C. progesterone D. oxytocin E. estrogen is sometimes given to women to induce labor 53. The hypothalamohypophysial tract connects the hypothalamus to the A. anterior pituitary. B. posterior pituitary. C. pars distalis. D. adenohypophysis. E. infundibulumExplanation / Answer
48)B.pars distalis:it is larger portion of the adenohypophysis.it occupies 70% of the adenohypophysis.the cells of this pars distalis arranged in cords in between the hypophysia portal vessel.based on staining the cells of pars distalis are clasified into acidophils,basophils,chromophobes.it contains carticotrophs(basophilic)which secrete ACTH(adreno cartico tropic hormone.)
49)A.
the posterior pituatary gland also called nuerohypophysis.it is not glandular.posterior pituatary are the axonal projections of suprotic and paraventricular nuclei of hypothalamus.these axons release the hormones(oxytocin,vasopressin) into the nuero hypophysial capillaries.the specialised glial cells called pituicytes help the storage and release of this hormone.
50) C,51(B but adenohypophysis),53(A)
hypothalamic hypophysial portal system are the micro circulature of blood vessel from arcuate nucleus of the hypothalamus to adenohypophysis.these capillaries contains pores which facilliate the rapid transport of hormones from hypothalamus to adenohypophysis.main hormones transported throug this are gonadotropin releasing hormones,carticotropin releasing hormone,thyrotropin releasing hormone.
52)oxytocin is the hormone which is secreted from the nuero hypopysis of the pituatary gland.oxytocin activate the oxytocin receptor present in the myometrium of uterus.these are the Gprotein coupled receptor activated inositol tri phosphate(IP3-DAG) pathway leads to increase in the intracellular calicuim resulting in contraction.
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