| Gland | Secretion | Effect on Body |
| A | Oestrogen | Maintenance of second ary sexual characters |
| Alpha cells of islets of Langerhans | B | Raises blood sugar level |
| Anterior pituitary | C | Over secrection leads to gigantism |
A) Placenta Insulin Vasopressin
B) Ovary Insulin Calcitonin
C) Placenta Glucagon Calcitonin
D) Ovary Glucagon Growth hormone
Correct Answer: B
Solution :
| [B] Ovary is the primary female sex organ that produces the female gamete (ovum) and several steroid hormones (ovarian hormones). The two steroid hormones produced by ovary are oestrogen and progesterone. Oestrogens produce wide ranging actions such as stimulation of growth and activities of female secondary sex organs, development of growing ovarian follicles appearance of female secondary sex characters (e.g., high pitch of voice, etc.) mammary gland development. Oestrogens also regulate female sexual behaviour. Alpha cells of islets of Langerhans of the endocrine pancreas secrete a hormone called glucagon. It is a peptide hormone and plays an important role in maintaining the normal blood glucose levels. It acts mainly on the liver cells (hepatocytes) and stimulates glycogenolysis resulting in an increased blood sugar (hyperglycemia). In addition, this hormone stimulates the process of gluconeogenesis which also contributes to hyperglycemia. Glucagon reduces the cellular glucose uptake and utilization. Thus, glucagon is a hyperglycemic hormone. The pars distalis region of pituitary, commony called produced anterior pituitary. Growth Hormone (GH), prolactin (PRL), Thyroid Stimulating Hormone (T5H), adrenocorticotrophic Hormone (ACTH), Luteinizing hormone (LH) and follicle stimulating hormone (FSH). Over secretion of GH stimulates abnormal growth of the body leading to gigantism and low secretion of GH results in stunted growth resulting in pituitary dwarfism. |
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