Biology
The diagram given alongside shows an endocrine gland in the human body. Study the diagram and answer the following questions :
(a) Identify the gland. Write its specific location in the human body.
(b) Label the guidelines 1, 2 and 3 shown in the figure.
(c) Name any two secretions from part 1 and two from part 2.
(d) The deficiency of which hormone causes Diabetes insipidus? How is this condition different from Diabetes mellitus with respect to the abnormal substances present in the urine.
Endocrine System
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Answer
(a) The gland shown is Pituitary gland. It hangs from the base of the mid-brain below the hypothalamus.
(b)
- 1 → Anterior lobe
- 2 → Posterior lobe
- 3 → Hypophysial stalk
(c) Two secretions from part 1 are Growth hormone and Thyroid Stimulating Hormone.
Two secretions from part 2 are ADH and Oxytocin
(d) The deficiency of ADH causes Diabetes insipidus. Urine does not contain any glucose in this condition but in Diabetes mellitus there is glucose present in the urine.
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