homeostasis intro

• What is the definition of homeostasis?

  Homeostasis is the regulation of internal conditions to maintain optimum conditions for function.
• Why do enzymes require stable conditions to function?

  Enzymes cannot work well if the conditions around them change too much.
• What are the three internal conditions that homeostasis helps to keep constant in the human body?

  Blood glucose concentration, body temperature, and water levels.
• What are the key features of automatic control systems in the body?

  • Involves the nervous system or hormones
  • Detects changes in the environment (stimulus)
  • Receptor cells send information to a Coordination Centre
  • Coordination Centre processes information and sends instructions to an effector
  • Effectors (muscles or glands) carry out the response
• What is a stimulus in the context of homeostasis?

  A stimulus is a change to the environment.
• What role do receptor cells play in automatic control systems?

  Receptor cells detect changes in the environment and pass information to the Coordination Centre
• What is the function of the Coordination Centre in an automatic control system?

  The Coordination Centre receives and processes information from receptor cells.
• What is the role of an effector in the homeostasis process?

  An effector is a muscle or gland that carries out the response to restore optimum levels.
• What components are involved in the homeostasis process?

  1. Stimulus
  2. Receptor
  3. Coordination Center
  4. Effector
  5. Response
• What can the term "environment" refer to in the context of homeostasis?

  The term "environment" can refer to both internal and external conditions of the body.
• How does exercise affect homeostasis in the body?

  Exercise can cause blood glucose concentration to fall, body temperature to rise, and water loss through sweating.
• In what ways can homeostasis be disrupted during physical activity?

  Homeostasis can be disrupted by changes in blood glucose levels, increased body temperature, and dehydration.
• How do automatic control systems maintain homeostasis in response to stimuli?

  They detect stimuli, process the information, and initiate a response through effectors.