Thermoregulation

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.

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

• R constrict

• Q relax

• P erect

• S become active

Choose the relevant corrective mechanisms when body temperature increases.

• Hair lies flat

• Hair stands erect

• Blood vessel dilates

• Blood vessel constricts

• More sweats is produced

Choose the relevant corrective mechanisms when body temperature decreases.

• Hair lies flat, blood vessel dilates

• Hair stands erect, blood vessel constricts

• Skeletal muscles move passively

• Skeletal muscle move actively - shivering

• Decrease sweating

Why does our hair stand erect during cold days?

• To increase body metabolism

• To trap air which acts as heat insulator

• To allow more blood flow near skin surface

• To cool down skin when sweat evaporates

Tags

NGSS.MS-LS1-3

When you are hot, your body sweats to cool you down. This means your temperature went above normal and your body sweats to counteract that change to bring you back to normal. What kind of feedback loop would this be?

• Negative Feedback Loop

• Positive Feedback Loop

• Neutral Feedback Loop

• Linear Feedback Loop

Tags

NGSS.HS-LS1-3

Which organ in the body produces the most heat?

• Brain

• Small intestine

• Heart

• Liver

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

• Shivering

• Sweating

• Vasodilation

• Vasoconstriction

The region of the brain that monitors temperature is called the _______.

• thermothalamus

• centigrade

• vasoconstrictor

• hypothalamus

Homeostasis in the human body is often maintained by a _______.

• neutral feedback loop 

• solar feedback loop

• positive feedback loop

• negative feedback loop

Tags

NGSS.HS-LS1-3