Vasopressin and Oxytocin are neurohormones produced past times the neuro secretory cells of hypothalamus accomplish the pituitary through the axon terminals of the secretory neurons equally secretory granules jump to neurophysin proteins.
Vasopressin or Antidiuretic hormone (ADH) :
This hormone has 2 primary functions. it stimulates the reabsorption of H2O inward the distal convoluted tubules, collecting tubules too collecting ducts inward the kidneys too decreases the loss of H2O past times reducing urine secretion. It stimulates the contraction of shine muscles of the blood vessels too thus increases the blood pressure, thence its get upward vasopressin.
Deficiency of ADH reduces reabsorption of H2O too increment urine output, causing excessive thirst. This disorder is called diabetes insipidus. No glucose is lost inward the urine of such a patient.
Oxytocin (Pitocin): It is released inward the blood when the hypothalamic neurons are stimulated past times widening of uterus at the fourth dimension of uterus at the fourth dimension of delivery or sucking of the pectus past times the child. It stimulates contraction of uterine muscles during the nativity of the immature i too contraction of myoepithelial cells of the mammary glands to initiate ejection or unloosen of milk during sucking past times the child. Because of its role, oxytocin is called birth hormone too milk ejecting hormone.
Vasopressin vs Oxytocin
Vasopressin1. It is a vasoconstrictor.
2. It tends to increment blood pressure.
3. It helpful inward concentration of urine.
4. It functions inward both sexes.
5. Its secretion is stimulated past times reduced quantity of trunk fluids.
6. Target cells: Cells of kidney
Oxytocin
1. It is a vasodilator
2. It tends to decrease blood pressure
3. It has no such activity.
4. Its component is known exclusively inward females.
5. Its secretion is stimulated past times distension of uterus too suckling of breast.
6. Target cells: Cells of mammary glands
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