Id el Kabir Observances. Eid al-Adha (Id ul-Adha) is a four-day Islamic festival starting on the 10th day of the month of Dhul Hijja (Thou al-Hijja) to commemorate the willingness of Ibrahim (Abraham) to sacrifice his son.id al-Adha is an Islamic festival to commemorate the willingness of Ibrahim (also known as Abraham) to follow Allah's (God's) command to sacrifice his son Ishmael. Muslims around the world observe this event.
The parathyroid glands secrete PTH, a substance that helps maintain the correct balance of calcium and phosphorus in the body. PTH regulates the level of calcium in the blood, release of calcium from bone, absorption of calcium in the intestine, and excretion of calcium in the urine.he parathyroid glands constantly measure calcium levels in your blood. If the calcium level gets too high, the normal glands sense this and stop production of PTH. This lowers the calcium in your body and returns your calcium levels to normal. Abnormal glands cannot regulate calcium balance.
1 They secrete parathyroid hormone which regulates calcium levels in the blood. 2  Thymus. 3  Although it is considered an endocrine gland, the thymus gland is the main organ of the lymphatic system. 4  Its primary function is to promote the development of specific white blood cells called T-lymphocytes. Thyroid and Parathyroid Glands. 2  The thyroid is a dual lobed gland located in the neck region. 3  It secretes hormones that control metabolism, growth, heart rate, body temperature, and regulate calcium levels. 4  Hormones secreted by the thyroid include thyroxin, triiodothyronine, and calcitonin.