3.3.1 Homeostasis

• Homeostasis ensures conditions like temperature and blood sugar levels stay within a healthy range.


  True
• Steps in a negative feedback loop for blood sugar regulation:

  1️⃣ Receptors detect high blood sugar levels

  2️⃣ Control center (pancreas) releases insulin

  3️⃣ Insulin causes cells to absorb glucose

  4️⃣ Blood sugar levels return to normal
• What is the purpose of temperature regulation in homeostasis?

  Maintain normal body temperature
• What is the role of receptors in a homeostatic control system?

  Detect changes in conditions
• Steps in a homeostatic control system using a negative feedback loop

  1️⃣ Receptors detect a change

  2️⃣ Control center processes information

  3️⃣ Effectors carry out a response

  4️⃣ Internal conditions return to normal
• What is the role of insulin in response to high blood sugar levels?

  Lowers blood sugar
• What is the primary goal of negative feedback in homeostasis?

  Maintain stable conditions
• Homeostatic mechanisms use negative feedback loops to maintain internal conditions within optimal ranges.


  True
• What are the key components of homeostatic control systems?

  Receptors, control center, effectors
• What is the main difference between positive and negative feedback mechanisms?

  Positive feedback amplifies changes
• Match the homeostatic mechanism with its control system:

  Temperature regulation ↔️ Hypothalamus

  Water balance ↔️ Kidneys

  Blood sugar regulation ↔️ Pancreas
• The control center in a homeostatic control system processes information and coordinates the appropriate response
• What is the term for maintaining stable internal conditions in the body?

  Homeostasis
• Negative feedback loops stabilize systems by reversing changes that deviate from the normal range.

  True
• Match the homeostatic mechanism with its description:

  Temperature regulation ↔️ Sweating or shivering

  Water balance ↔️ Regulating urine production

  Blood sugar regulation ↔️ Releasing insulin or glucagon

  Osmoregulation ↔️ Adjusting water reabsorption
• What is the definition of homeostasis?

  Regulation of internal conditions
• Effectors carry out responses to restore internal conditions to the normal range
• Positive feedback amplifies changes, pushing the system further from its initial state
• In temperature regulation, the hypothalamus triggers responses like shivering to increase body heat
• Effectors in a homeostatic control system restore internal conditions to the normal range.


  True
• Negative feedback loops maintain stable internal conditions by reversing changes that deviate from the normal range
• In blood sugar regulation, the pancreas acts as the control center
• Which organ acts as the control center for temperature regulation?

  Hypothalamus
• Homeostasis is the regulation of internal conditions to maintain a stable, constant environment
• Negative feedback loops maintain stable internal conditions by reversing changes that deviate from the normal range.


  True
• Negative feedback returns the system to its normal state by reversing changes.

  True
• What is the role of effectors in blood sugar regulation?

  Lower blood glucose levels
• What type of feedback loop is used in homeostatic control systems to maintain stable conditions?

  Negative feedback
• Match the component of a negative feedback loop with its function:

  Receptors ↔️ Detect changes

  Control center ↔️ Processes information

  Effectors ↔️ Carry out responses
• Steps in blood sugar regulation when levels are high

  1️⃣ Receptors detect high blood sugar

  2️⃣ Pancreas releases insulin

  3️⃣ Insulin lowers blood glucose

  4️⃣ Blood sugar returns to normal
• The kidneys adjust water reabsorption to maintain the correct osmotic balance