The Endocrine System Lets adventure back into the

The Endocrine System Let’s adventure back into the human body…. .

The Endocrine System It controls many of the body’s daily activities as well as long-term changes such as development. **made of glands that secrete their chemicals right into the blood stream**

Hormones are chemicals secreted by the glands of the endocrine system. They are chemical messengers that can speed up, slow down, turn on, or turn off activities of different organs or tissues. Ones we’ve already talked about: Testosterone Estrogen New ones: Insulin Glucagon Thyroxine Calcitonin PTH (parathyroid hormone)

Glands involved in the Endocrine system…. .

Hypothalamus Located in the brain Links the nervous system to the endocrine system Controls the glands of the endocrine system Important for homeostasis regulation

Pituitary Gland Located below the hypothalamus Regulates body processes such as growth, water balance, and the production of sperm and eggs Controls the activities of other glands such as the thyroid and adrenal glands

Pancreas Located between the kidneys Produces two hormones: Insulin: lowers blood glucose levels (glucose from blood to cells) Glucagon: raises blood glucose levels (takes glycogen (stored sugar) from the liver and brings to blood)

Thyroid Located under the voice box Regulates metabolism thyroxine is the hormone Important for bone and nerve cell development Helps regulate calcium (Ca) levels in the blood **Calcitonin: hormone decreases blood calcium level (takes Ca from blood and brings it to bones)**

Parathyroid There are four of them in total embedded in the thyroid gland Works with the thyroid to regulate the amount of calcium (Ca) in the blood PTH: hormone released from parathyroid that increases blood calcium levels (takes Ca from the bones and puts it in the blood)

Pituitary Gland Parathyroid Glands Hypothalamus Thyroid Gland Thymus Gland Adrenal Gland Pancreas Ovaries Testes