Homeostasis in Biology

Homeostasis

• allows for a wildly fluctuating internal environment

• is impossible in vertebrates

• is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation

When you are cold, you shiver and your blood vessels contract, which warms you up. When you are hot, you sweat and your blood vessels expand, which cools you down.

• False

• True

What is another word that can be used to describe "homeostasis"?

• Stable

• Equal

• Complete

• Correct

The term for maintaining internal temperature is: 

• Thermoregulation
• Thermometer
• Homeothermal
• Homeostasis

What is the evaporation of a liquid to cool the body?

• Shivering
• Sweating
• Vasodilation
• Vasoconstriction

What is involuntary contractions of voluntary muscles to warm up?

• Shivering
• Sweating
• Vasodilation
• Vasoconstriction

Homeostasis in the human body is often maintained by a: 

• neutral feedback loop 
• solar feedback loop
• positive feedback loop
• negative feedback loop

If the environment gets cold, we will often shiver in order to:

• keep body temperature the same as the external temperature
• decrease body temperature
• increase body temperature
• regulate blood pressure

Which of the following is NOT the system that regulate the blood sugar level?

• Circulatory system
• Muscle system
• Endocrine system
• Digestive system

When the body temperature drop below normal ranges, arterioles in the skin will

• dilate to allow less blood to flow to skin surface

• constrict to allow less blood to flow to skin surface

• dilate to allow more blood to flow to skin surface

• constrict to allow more blood to flow to skin surface