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.
T3 and T4 are secreted by the follicular cells. Calcitonin is secreted by the parafollicular cells of the thyroid gland and acts to decrease blood calcium levels.1 person found this useful.the concentration of specific nonhormonal substances in the blood or extracellular fluid.) Calcitonin is produced by the parafollicular cells of the thyroid â¦ gland in response to rising blood calcium levels.