The Endocrine System works with the Nervous System to maintain

Homeostasis

Hormones are?

chemical messengers sent to many parts of the body to produce a specific effect on a target cell or organ.

What is an endocrine gland?

A ductless gland that secretes hormones directly into the bloodstream.

Some similarities between Nervous & Endocrine systems?

Both facilitate cellular communication and control. Some nervous system tissues secrete hormones (e.g. hypothalamus, pituitary gland, adrenal gland). Some chemicals function as both neurotransmitters and hormones (e.g. epinephrine). Both are regulated by negative feedback loops. Both regulate several physiological processes together (e.g. breastfeeding).

Some differences between Nervous & Endocrine systems?

Nervous system uses neurons for communication, Endocrine uses glands Nervous system has a rapid response, Endocrine slow but longer lasting

Pituitary hormones?

Human Growth Hormone (HGH) Thyroid stimulating hormone (TSH) Adrenocorticotropic Hormone (ACTH) - stimulates adrenal cortex to secrete things like cortisol Antidiuretic Hormone (ADH) - Promotes the retention of water by the kidneys

Thyroid Gland hormones?

Thyroxine - Increases metabolic rate Calcitonin - Targets bones and kidneys to lower calcium by inhibiting release of calcium from bone and reabsorption of calcium by kidneys.

What does Parathyroid Hormone do?

Raises blood calcium levels by stimulating the bone cells to release calcium, the intestine to absorb it and kidneys to reabsorb it.

Adrenal Gland hormones?

Cortisol - Stimulates tissues to raise blood glucose and break down protein. Epinephrine/Norepinephrine Aldosterone - Promotes reabsorption of sodium and water by the kidneys.

Pancreas hormones?

Insulin - Lowers blood glucose levels Glucagon - Raises blood glucose levels and promotes breakdown of glycogen