Hormones+WB

2 kinds: Steroid, Peptide. Slower than nerves. Travel through the blood. Examples: Estrogen, testosterone, melatonin. A secreting cell secretes hormones into the blood vessel. Then, the hormone travels through the blood, and is spread throughout the whole body. The hormones fill every cell in the body. Target cells have receptors. Adrenaline target cells are found in the brain and skin. Insulin target cells are found in muscle cells. Estrogen target cells are found in the breast.

1. Compare and Contrast the endocrine system and the nervous system. (At least three things) 2. What is a steroid hormone? How does it compare to a peptide hormone? 3. Explain the role of the hypothalamus. 4. Explain the role of the pituitary gland (posterior and anterior). 5. Name the endocrine glands covered in this chapter, the hormone(s) they produce, and the function of each hormone. You may want to set up a table.

1. The endocrine system communicates with the body by use of hormones. The endocrine and nervous systems work together, but complete different tasks. The endocrine and nervous systems help to maintain and defend homeostasis. 2. A steroid hormone is a lipid that closely resembles cholesterol. Peptides are protein-based. 3. The hypothalamus controls internal parts of the body, such as heartbeat and breathing. 4. The role of the posterior pituitary gland is to store hormones in axon endings. The anterior pituitary gland produces actual hormones. 5.