Communication and homeostasis

• What is the definition of call signaling?

  A complex system of neural communication
• What does homeostasis refer to?

  The maintenance of a stable equilibrium in the conditions of the body
• What is a stimulus?

  A detectable change in the external or internal environment of an organism
• What is a synapse?

  The junction between two neurones, or between a neurone and an effector
• What is a target cell?

  Cells that are receptive to specific signals
• What is the process of cell signaling?

  • Involves chemical messengers
  • Stimulus detected
  • Chemical (hormone/neurotransmitter) released
  • Specific receptors on target cells bind to the chemical
  • A response is initiated in the target cell
• What role do chemical messengers play in cell signaling?

  They facilitate communication between cells
• How does a stimulus lead to a response in cell signaling?

  A stimulus triggers the release of chemical messengers that bind to specific receptors on target cells
• What is the significance of specific receptors in cell signaling?

  They ensure that only target cells respond to the appropriate signals