Getting a little sweat on 😅💦 . . Both eccrine and apocrine sweat glands are innervated by postganglionic sympathetic fibers. For eccrine glands, the major neurotransmitter is acetylcholine, and for apocrine glands, catecholamines are the major neurotransmitters. Spinal cord segments from T2 to T8 provide innervation to the skin of the upper limbs, T2 to T4 innervate the skin of the face, T4 to T12 innervate the skin of the trunk, and T10 to L2 innervate the skin of the lower limbs
Fun facts: One of the most important roles of vitamin D is to maintain skeletal calcium balance by promoting calcium absorption in the intestines, promoting bone resorption by increasing osteoclast number, maintaining calcium and phosphate levels for bone formation, and allowing proper functioning of parathyroid hormone to maintain serum calcium levels.