There are three muscles located in the anterior compartment of the upper arm â biceps brachii, coracobrachialis and brachialis. They are all innervated by the musculocutaneous nerve. A good memory aid for this is BBC â biceps, brachialis, coracobrachialis.
Calcitonin is a hormone secreted by the thyroid gland that reduces the concentration of blood calcium level when it has risen to an above normal level. This polypeptide hormone is made up of 32 amino acids and is produced mainly by the parafollicular cells (also known as C cells) of the thyroid gland.
Calcitonin is the other major hormone involved with calcium regulation. Parathyroid hormone (PTH), produced by the parathyroid gland, increases the level of calcium in the blo â¦ od. It usually accomplishes this by increasing the resorption rate (taking back) from bone.arathyroid hormone secreted by the parathyroid gland regulates the resorption of Ca2+ from bone, reabsorption in the kidney back into circulation, and increases the activatio â¦ n of vitamin D3 to Calcitriol.