Endocrine
Cards (18)
- Endocrine function: Glands release chemicals (Hormones) into the bloodstream to alter the activity of the target cells. This regulates processes such as growth, development, metabolism, and production
- Receptor: Receives the message
- Signalling molecule: Chemical message or hormone
- Water soluable pathway:
- Reception- Hormone binds with receptor, conformational change in cell initiates transduction
- Transduction- Message transferred into a message that the cell understands
- Response produce- Variable according to message and cells function
- Water soluable pathway receptors are located outside of cell membrane
- Lipid soluable pathway receptors are located in cytoplasm
- The possible outcomes for the response for water/lipid pathways:
- Increase/Decrease production
- Increase/Decrease secretion
- Stop
- Pause
- Cells communicate with each other to ensure they know what each cell is doing in order to achieve a specific response
- Function of peripheral nervous system: Receive and send to central nervous system (Sensory + Motor)
- Homeostasis is the process of maintaining a stable internal environment.
- Stimulus
- Control centre (Hypothalamus)
- Receptor
- Effector
- Effect/response
- Four types of cell communication:Neural signalling, Paracrine signalling, Endocrine signalling, Autocrine signalling
- Hypothalamus sends messages to pituitary, these secrete messages to other places in the body
- Hypothalamus: Control centre which receives notice of imbalance (Receptors) and creates response to send to the effector
- Endocrine axes: Specific order between organs to translate a message (eg. requires Hypothalamus, Pituitary, kidney to translate instead of just two of them)
- Neural signalling: Neuron to neuron, chemical message is pre -> Post (Sypnatic)
- Paracrine signalling: Travels short distance to target cell
- Endocrine signalling: Produced in one place, travels long distance through blood to reach cell
- Autocrine signalling: Self regulating, produces own hormones