Free Practice Quiz Question List

14 Homeostasis and Interactions Between Organ Systems Online Quiz Questions

Use this free practice quiz with 20 questions to review 14 Homeostasis and Interactions Between Organ Systems, test your knowledge, and prepare for your next test or exam.

20 questions

True or false

1 point

True or false: Homeostasis keeps internal conditions perfectly constant, with no meaningful fluctuations.

A
True
B
False

Choose one

1 point

When body temperature rises, which response is an example of negative feedback that helps bring it back toward its usual range?

A
Shivering and constricting skin blood vessels
B
Sweating and widening skin blood vessels
C
Reducing blood flow to the skin and stopping sweat production
D
Increasing the temperature set point

Written response

1 point

After a stressor passes, which division of the nervous system supports a return toward resting conditions?

Fill in the blank

1 point

During exercise, the urinary system helps regulate as fluid is lost in sweat.

True or false

1 point

True or false: Hyperthermia is an increase in body temperature without a rise in the hypothalamic temperature set point.

A
True
B
False

Choose one

1 point

During exercise, which cardiovascular adjustment helps deliver oxygen and fuel to working muscles and carry carbon dioxide away?

A
The urinary system increases ventilation to remove carbon dioxide
B
The muscular system directs blood toward active muscles
C
The cardiovascular system raises cardiac output and directs more blood toward active muscles
D
The integumentary system delivers oxygen and fuel through the blood

Written response

1 point

Name one hormone whose release from the adrenal medulla is promoted during the rapid stress response.

Fill in the blank

1 point

When the hypothalamic set point rises during fever, skin blood vessels to reduce heat loss.

Choose all

1 point

Select all changes that the rapid sympathetic response can promote to support immediate action during a perceived threat.

A
The heart beats faster and more forcefully
B
Cortisol release is the only change and occurs without nervous-system activation
C
Airways widen
D
Blood flow and available fuel are adjusted to support immediate action
E
Parasympathetic activity rises to initiate the fight-or-flight response

Choose one

1 point

Which sequence correctly describes the signaling pathway of the hypothalamic–pituitary–adrenal (HPA) axis during stress?

A
Pituitary → adrenal cortex → hypothalamus
B
Hypothalamus → pituitary → adrenal cortex
C
Adrenal cortex → hypothalamus → pituitary
D
Hypothalamus → adrenal medulla → pituitary

Choose all

1 point

During exercise, select all statements that correctly match an organ system to a role it performs.

A
The respiratory system increases ventilation to bring in more oxygen and remove more carbon dioxide
B
The urinary system produces sweat to release excess heat
C
The cardiovascular system directs more blood toward active muscles
D
The muscular system widens airways to increase ventilation
E
The integumentary system helps release excess heat through sweating and increased blood flow near the skin

Choose one

1 point

When a fever's hypothalamic temperature set point returns toward its previous level, which response helps release heat?

A
Sweating and widening of skin blood vessels
B
Shivering and constricting skin blood vessels
C
Increasing ventilation while preventing heat loss through the skin
D
Reducing blood flow near the skin and increasing heat production

True or false

1 point

True or false: Prolonged stress can keep multiple body systems under sustained demand.

A
True
B
False

Open ended

1 point

Explain how exercise illustrates that homeostasis depends on coordinated organ systems rather than a single system. Connect the increased demands of working muscles to responses by at least two other systems and explain how those responses help limit changes in the internal environment.

Choose one

1 point

A homeostatic control process detects that a body variable has moved away from its usual range. What should the effectors do in a negative-feedback response?

A
It causes effectors to amplify the detected change.
B
It causes effectors to oppose the detected change.
C
It prevents receptors from detecting changes.
D
It keeps the control center from evaluating information.

Choose one

1 point

During exercise, active muscles need more oxygen and fuel and produce more carbon dioxide. Which response most directly helps meet this exchange demand?

A
The urinary system reduces blood flow to active muscles to conserve water.
B
The integumentary system raises cardiac output to deliver fuel to the muscles.
C
The cardiovascular system directs more blood toward active muscles.
D
The muscular system transports carbon dioxide away through the bloodstream.

Choose one

1 point

As exercise increases the body’s demand for oxygen and production of carbon dioxide, which system responds by increasing ventilation?

A
The respiratory system increases ventilation.
B
The endocrine system increases ventilation.
C
The urinary system increases ventilation.
D
The immune system increases ventilation.

Choose one

1 point

A person loses fluid through sweating during exercise. Which system helps regulate the resulting water and electrolyte balance?

A
The muscular system regulates water and electrolyte balance.
B
The nervous system regulates water and electrolyte balance.
C
The integumentary system regulates water and electrolyte balance.
D
The urinary system regulates water and electrolyte balance.

Written response

1 point

Which hormone does the adrenal cortex release as part of the slower HPA-axis response to stress?

Written response

1 point

During exercise, which organ system uses delivered oxygen and fuel to contract, with its activity also producing heat?