BIOL 2160 Chapter : Chapter 5 Chemical Messengers
Document Summary
Indirect communication uses chemical messengers: functional groups, lipids use indirect to go through the cell membrane, proteins need vesicles and receivers and cannot pass through the cell membrane, so the receiver must have receptors. **note: make a chart of all messengers, chemical classes, where they are made, released and transported. These move as paracrines except during puberty when they are affecting the whole body such as muscle growth, making package larger and changing voice. Activate or inhibit adenylate cyclase: are potent in small amounts, can activate or inhibit adenylate cyclase, acts locally, semen: they regulate how cells respond to hormones. Are released out of cell by exocytosis and recepted back into the cell. The receptor then triggers the activity to continue. Autocrines act on the cell that releases it. Messenger of endocrine system: released from endocrine gland into blood, transported in blood to target. Target cell = cells in body with receptors specific to the hormone.
