Homeostasis: Extra Stuff

Question 1

What is a positive feedback loop?

Answer 1

enhance or amplify changes; this tends to move a system away from its equilibrium state and make it more unstable

Question 2

What is a negative feedback loop?

Answer 2

dampen or buffer changes; this tends to hold a system to some equilibrium state making it more stable.

Question 3

How is our body’s internal temperature controlled?

Answer 3

by a part of our brain called the hypothalamus.

Question 4

What makes out temperature go down?

Answer 4

• Sweating: Your sweat glands release sweat, which cools your skin as it evaporates. This helps lower your internal temperature.
• Vasodilatation: The blood vessels under your skin get wider. This increases blood flow to your skin where it is cooler — away from your warm inner body. This lets your body release heat through heat radiation.

Question 5

What heats up our body temperature?

Answer 5

• Vasoconstriction: The blood vessels under your skin become narrower. This decreases blood flow to your skin, retaining heat near the warm inner body.
• Thermogenesis: Your body’s muscles, organs, and brain produce heat in various ways. For example, muscles can produce heat by shivering.
• Hormonal thermogenesis: Your thyroid gland releases hormones to increase your metabolism. This increases the energy your body creates and the amount of heat it produces.

Question 6

NOT A QUESTION

THE CORRECT ANSWER ON THE TEST WAS HORMONES CONTROL TEMPERATURE

Temperature

Answer 6

THE CORRECT ANSWER ON THE TEST WAS HORMONES CONTROL TEMPERATURE

NOT A QUESTION

Temperature