#1: Homeostasis

Question 1

Homeostasis

Answer 1

process of maintaining relatively constant internal conditions
adjusts to enviro conditions to maintain stable internal conditions

maintained using homeostatic control systems

Question 2

Sensor

Answer 2

detects when homeostasis has been disturbed and sends a message to the integrator

Question 3

Integrator

Answer 3

relays information to appropriate regulator / effector

Question 4

Effector

Answer 4

acts to restore normal balance

Question 5

Negative Feedback Systems

Answer 5

Response reduces initial stimulus

When body goes outside its normal range, body takes action to return to its optimal range

Question 6

Examples of Negative Loop

Answer 6

body temp

Question 7

Positive Feedback Systems

Answer 7

Response increases initial stimulus
Move the variable even further away from steady state (ideal range)
Not useful for maintaining homeostasis

Question 8

Examples of Positive Loop

Answer 8

Labour - oxytocin released and intensifies/speeds up contractions

increase in contractions causes more oxytocin to be released until baby is born