Free Printable Homeostasis

Worksheets

Homeostasis

Total questions: 17

Worksheet time: 51mins

Name

Class

Date

What is mean by homeostasis?

Controls and coordinates body activities through chemical

controls and coordinates body activities through electrical impulses

For maintenance of a steady state in the internal environment

remove metabolic waste products from the cel

Which of the following is an example of positive feedback to indirectly maintain homeostasis?

the chemical reactions involved in blood clotting

your blood vessels dilate and you begin to sweat in response to elevated body temperature

your blood vessels constrict and you begin to shiver in response to low body temperature

your coach compliments you on your performance in practice

Homeostasis in the human body is often maintained by a:

neutral feedback loop

solar feedback loop

positive feedback loop

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

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

Rapid growth during puberty causes your body to release more and more growth hormones. As you grow, more and more growth hormones are released until puberty is reached, and then the hormones stop.

Positive Feedback Response

Negative Feedback Loop

If the calcium in your blood decreases below homeostasis levels, a gland in the brain will sense the decrease and send a chemical message to your bones. Your bones will release calcium into the blood, bringing blood calcium levels back up.

Positive Feedback Response

Negative Feedback Loop

When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels.

Positive Feedback Response

Negative Feedback Loop

Positive Feedback Response

Negative Feedback Loop

10.

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

11.

Blood sugars are controlled by

brain generated chemicals

blood

hormones from the pancreas

chemicals from the liver

12.

Which of the following are in the correct order?

organ system, cell, organ, tissue, organism

cell, organ, tissue, organ system, organism

cell, tissue, organelle, organ system, organism

cell, tissue, organ, organ system, organism

13.

This is the term used to describe the normal range of a variable in an organism

control center

effector

stimulus

set point

14.

This is the term used to describe a body part that provides the response needed to influence a change.

control center

effector

sensor

set point

15.

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

16.

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

STABLE

EQUAL

COMPLETE

CORRECT

17.

Most bacteria that cause sickness in humans grow best at 37°C. Sometimes a fever is the body's response to the bacteria. What is the reason for developing a fever?

To lower the temperature of the body to kill the bacteria

The increase the temperature of the body to kill the bacteria

To allow the bacteria to take over

To make you feel miserable

Reset

Homeostasis

Total questions: 17

Worksheet time: 51mins

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