Temperature Regulation Quiz

Temperature homeostasis in the human body is maintained by a: 

• no feedback loop 

• solar feedback loop

• positive feedback loop

• negative feedback loop

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

A student walks into a cold room. We can expect the following response by their 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.

Choose all corrective mechanisms that apply to 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 our hair will stands erect during cold days?

• To increase body metabolism

• To trap air which acts as heat insulator

• To let more blood flows near skin surface

• To cool down skin when sweats is evaporated

What is involuntary contractions of voluntary muscles to warm up?

• Shivering
• Sweating
• Vasodilation
• Vasoconstriction

What is the oily substance that protects the skin against water and dryness called?

• glucose

• wax

• sebum

• skin

How does sweat cool you?

• evaporation

• condensation

• It doesn't cool you

Vasodilation means:

• Blood vessels expand to allow greater blood flow

• Blood vessels constrict to lower blood flow

• There is no change

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