Matching Pairs 4.23 Endocrine system Part IIOnline version endocrine system: Organs and functions by Jorge Arizpe 1 2 3 4 5 6 7 ____________ are small glands of the endocrine system which are located in the neck behind the thyroid. Control the calcium in our bodies. The _______ produce testosterone, which affects many of the male characteristics and sperm production. ________ is a small structure of the diencephalon of the brain, the pineal gland produces the hormone melatonin. Melatonin influences sexual development and sleep-wake cycles. Atrial cardiocytes in the heart of mammals produce hormones for modulation of systems that tend to increase extracellular fluid volume and blood pressure. ________ produce three important hormones: Erythropoietin is red blood cell precursors. Calcitriol and Renin control metabolism of water and minerals. Enteroendocrine cells are located in the stomach, in the intestine and in the pancreas. In a sense they are known to act as chemoreceptors, initiating digestive actions and detecting harmful substances and initiating protective responses. The ________produce estrogen and progesterone. These two hormones affect many of the female characteristics and reproductive functions.