Intro to Anatomy Exam 1

What is homeostasis?

• The process of breaking down food

• Stability of the internal environment and the mechanisms that maintain the stability

• The process of cell division

• The process of photosynthesis

Tags

NGSS.HS-LS1-3

Fill in the blank: A ________ is maintained where the rate of loss balances out with the rate of gain.

• dynamic equilibrium

• static force

• constant acceleration

• steady increase

Tags

NGSS.MS-LS2-3

Which of the following is NOT a way organisms maintain homeostasis?

• A) Detecting and responding to stimuli

• B) Maintaining dynamic equilibrium

• C) Ignoring changes in the environment

• D) Regulation at the organ system and cellular level

Tags

NGSS.HS-LS1-3

Match the following regulated variables with their extremes:

• pH

• Acidic - Basic

• temperature

• Hypoglycemic - Hyperglycemic

• Blood sugar

• Cold - Hot

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the role of feedback mechanisms in organisms?

• To help maintain homeostasis

• To increase energy production

• To decrease system response

• To eliminate input signals

Tags

NGSS.HS-LS1-3

Refer to the diagram showing the flow from Input to System to Output. Fill in the blank: These loops use the ______ of a system to signal a change in input so that a system response can be stabilized or amplified.

• output

• energy

• boundary

• structure

Tags

NGSS.HS-ETS1-4

NGSS.HS-LS2-3

Feedback mechanisms can be positive or negative.

• True

• False

Tags

NGSS.HS-LS1-3

What is a positive feedback loop?

• The output of a system reduces the response

• The output of a system intensifies the response

• The input of a system is ignored

• The system does not respond to any input

Tags

NGSS.HS-LS1-3

Refer to the diagram showing Input → System → Output with Amplification. What does the amplification in a positive feedback loop result in?

• Decreased response

• No change in response

• Intensified response

• Stopped response

Tags

NGSS.HS-LS1-3

Fill in the blank: In human childbirth, the release of more hormones leads to more ________ and more pressure.

• contractions

• relaxation

• swelling

• bleeding

Tags

NGSS.HS-LS1-3