NEW TOPIC

• Homeostasis - state of balance or equilibrium
• Feedback Mechanism - regulating system to respond to changes that occur in the body
• Negative Feedback - happens when a response to stimulus is decreased

  • Temperature Regulation
  • Controlled blood glucose level
  • Regulated blood pressure
• Positive Feedback - happens when a response to stimulus is increased

  • Milk Production
  • Blood Clotting
  • Labor Contractions
• Jean Baptiste Lomark

  • Theory of Need
  • Theory of Use and Disuse
  • Theory of Acquired Characteristics
• Charles Darwin

  • Theory of Natural Selection
• Fossils - preserved physical remains of organism

  1. Body Fossils
  2. Trace Fossils
• Homologous - same structure diff function
• Analogous - same function diff structure