2.5.4 Homeostasis

• Insulin lowers blood glucose levels, while glucagon raises them.


  True
• Steps in maintaining homeostasis using the regulatory system:

  1️⃣ Sensors detect a change

  2️⃣ Control center receives information

  3️⃣ Effectors carry out responses
• Match the component of the homeostatic system with its role:

  Sensors ↔️ Detect changes

  Control Center ↔️ Processes information

  Effectors ↔️ Carry out responses
• Which sensors detect a rise in body temperature during negative feedback?

  Thermoreceptors
• What is the role of effectors in maintaining homeostasis?

  Restore stability
• What hormones regulate blood glucose levels in the body?

  Insulin and glucagon
• Homeostasis is crucial for cell function and survival.


  True
• Steps in a negative feedback loop for temperature regulation:

  1️⃣ Sensors detect a rise in body temperature

  2️⃣ The hypothalamus receives this information

  3️⃣ Effectors, such as sweat glands, release sweat

  4️⃣ Body temperature decreases
• In temperature regulation, sweating helps to cool the body, while shivering helps to warm it up by contracting muscles
• The hypothalamus is the main control center for homeostasis in the brain.


  True
• Negative feedback loops are the primary mechanism for maintaining homeostasis
• Sweating is an effector response that lowers body temperature.

  True
• Negative feedback loops maintain homeostasis by reversing changes in the internal environment
• Match the component of the homeostatic system with its role:

  Sensors ↔️ Detect changes

  Control Centers ↔️ Coordinate response

  Effectors ↔️ Restore stability
• Which effector in blood glucose regulation lowers blood glucose levels?

  Insulin
• A fever, or elevated body temperature, can damage cells and proteins if prolonged
• What is the definition of homeostasis?

  Stable internal environment
• Match the regulatory system with its primary hormone:

  Water Balance ↔️ ADH

  Blood Glucose Regulation ↔️ Insulin
• Glucagon is released by the pancreas to raise blood glucose levels
• Steps in a negative feedback loop for temperature regulation:

  1️⃣ Sensors detect rising temperature

  2️⃣ Hypothalamus signals sweat glands

  3️⃣ Sweat glands release sweat

  4️⃣ Evaporation cools the body
• Negative feedback ensures internal conditions remain stable despite external fluctuations
• Homeostasis ensures optimal conditions for cells to function and survive.


  True
• Negative feedback loops maintain homeostasis by reversing changes in the internal environment
• Match the regulatory system with its key components:

  Temperature Regulation ↔️ Thermoreceptors, hypothalamus, sweat glands

  Blood Glucose Regulation ↔️ Glucose receptors, pancreas, insulin and glucagon
• What can dehydration reduce in the body?

  Blood volume