Homeostasis and Thermoregulation

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

• Shivering
• Sweating
• Vasodilation
• Vasoconstriction

Homeostasis in the human body is often maintained by a:  (a)  

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

Tags

NGSS.HS-LS1-3

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.   (a)  

• Positive Feedback Response
• Negative Feedback Loop 

Tags

NGSS.HS-LS1-3

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

Tags

NGSS.HS-LS1-3

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

A student walks into a cold room.

Which of the following happens to his body?

• Sweating and vasodilation of blood vessels.

• Shivering and vasoconstriction of blood vessels

• Sweating and vasoconstriction of blood vessels.

• Shivering and vasodilation of blood vessels.

Tags

NGSS.HS-LS1-3

Diagram shows the cross section of human skin.

Which of the following will occur when the surrounding temperature drops below 10 ° C?

• R constrict

• Q relax

• P erect

• S become active

Tags

NGSS.HS-LS1-3

Homeostasis is the ________ of an internal environment in organisms body to be in a ________ and balanced condition.

• repair , stable

• maintenance , stable

• repair , higher

• maintenance , higher

Which organ acts as a control centre of a homeostasis process?

• 
• 
• 
• 

Choose all corrective mechanisms when body temperature increases

• Hair lies flat

• Hair stands erect

• Blood vessel dilates

• Blood vessel constricts

• More sweats is produced