Free Printable Homeostasis Temperature Regulation

Worksheets

Homeostasis Temperature Regulation

Total questions: 18

Worksheet time: 21mins

Name

Class

Date

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

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

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.

Positive Feedback Response

Negative Feedback Loop

When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.

Positive Feedback Response

Negative Feedback Loop

Positive feedback is when the change caused by the stimulus is

decreased

non existant

increased

changes constantly

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

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

Salt water crocodiles bask in the sun for several hours every morning. which one of the following statements best describes the method of thermoregulation in salt water crocodiles?

Endothermy, increase body temperature to increase rate of metabolism reactions in cells

Ectothermy, decrease body temperature to increase rate of metabolic reactions in cells.

Endothermy, decrease body temperature to increase rate of metabolic reactions in cells

Ectothermy, increase body temperature to increase rate of metabolic reactions in cells

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.

10.

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

11.

Which body system controls the body to maintain homeostasis?

excretory

nervous

circulatory

skeletal

12.

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

repair , stable

maintenance , stable

repair , higher

maintenance , higher

13.

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

14.

These are corrective mechanisms when ...

Water level Increases

Water level Decreases

Body temperature increases

Body temperature decreases

15.

Choose Corrective mechanisms when body temperature increases

Hair lies flat

Hair stands erect

Blood vessel dilates

Blood vessel constricts

More sweats is produced

16.

Choose 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

17.

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

18.

the reason for all these corrective mechanisms during homeostasis is to ..

Keep body warm

Cool down body

100 %

Homeostasis Temperature Regulation

Total questions: 18

Worksheet time: 21mins

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