SCIENCE

• Hormones act as chemical messengers that are released into the blood stream to act on an organ in another part of the body.
• Hormones control or regulate many biological processes and are often produced in exceptionally low amounts within the body.
• Estrogens are the group of hormones responsible for female sexual development.
• Estrogen are produced primarily by the ovaries and in small amounts by the adrenal glands.
• Androgens are responsible for male sex characteristics. 
• Testosterone, the sex hormone produced by the testicles, is an androgen.
• The thyroid gland secretes two main hormones, thyroxine and triiodothyronine, into the bloodstream.
• The thyroid gland secretes two main hormones, thyroxine and triiodothyronine, into the bloodstream.
• The thyroid gland secretes two main hormones, thyroxine and triiodothyronine, into the bloodstream.
• Testosterone, the sex hormone produced by the testicles, is an androgen.
• Hormones act as chemical messengers that are released into the blood stream to act on an organ in another part of the body. 
•  The hypothalamus links our endocrine and nervous systems together. 
•  The hypothalamus links our endocrine and nervous systems together. 
•  The hypothalamus links our endocrine and nervous systems together. 
• The hypothalamus drives the endocrine system.
• The hypothalamus drives the endocrine system.
• The pituitary gland receives signals from the hypothalamus.
• Pituitary gland has two lobes, the posterior and anterior lobes.
• Pituitary gland has two lobes, the posterior and anterior lobes.
• The posterior lobe secretes hormones that are made by the hypothalamus
• The anterior lobe produces its own hormones, several of which act on other endocrine glands.
•  The adrenal gland is made up of two glands: the cortex and medulla.
•  The adrenal gland is made up of two glands: the cortex and medulla.
• Adrenal glands produce hormones in response to stress and regulate blood pressure, glucose metabolism, and the body's salt and water balance.
• The pancreas is responsible for producing glucagon and insulin.
• The pancreas is responsible for producing glucagon and insulin.
• The pancreas is responsible for producing glucagon and insulin.
• The male reproductive gonads, or testes, and female reproductive gonads, or ovaries, produce steroids that affect growth and development and also regulate reproductive cycles and behaviors.
• The male reproductive gonads, or testes, and female reproductive gonads, or ovaries, produce steroids that affect growth and development and also regulate reproductive cycles and behaviors.
• The male reproductive gonads, or testes, and female reproductive gonads, or ovaries, produce steroids that affect growth and development and also regulate reproductive cycles and behaviors.
• The male reproductive gonads, or testes, and female reproductive gonads, or ovaries, produce steroids that affect growth and development and also regulate reproductive cycles and behaviors.
• The male reproductive gonads, or testes, and female reproductive gonads, or ovaries, produce steroids that affect growth and development and also regulate reproductive cycles and behaviors.
• The hypothalamus is located at the base of the brain
• hypothalamus secretes hormones that stimulate or suppress the release of hormones
• hypothalamus secretes hormones that stimulate or suppress the release of hormones
• The pineal body is located below the corpus callosum
• The pineal body is located below the corpus callosum
• The hypothalamus is located at the base of the brain
• The pituitary gland is located below the brain.
• The pituitary gland is located below the brain.