The endocrine system is the collection of glands that produce and release hormones. It is made up of the pituitary, thyroid, and adrenal, and the pancreas, ovaries (in females) and testicles (in males).Zimmermann, K. (2018). Endocrine System: Facts, Functions and Diseases. [online] Live Science. Available at: https://www.livescience.com/26496-endocrine-system.html [Accessed 16 Oct. 2018].