Feedback loops and Body Terminology

Which of these is an example of a POSITIVE feedback loop?

• Maintaining normal body temperature

• A mother giving birth

• Maintaining normal blood sugar level

• Maintaining normal pH level

Tags

NGSS.HS-LS1-3

What is the purpose of NEGATIVE FEEDBACK loops in your body?

• To maintain homeostasis

• To destabilize your body systems

• To enhance or amplify an effect

• To provide constructive criticism

Tags

NGSS.HS-LS1-3

Positive feedback loops move systems away from equilibrium. Negative feedback loops towards it.

• True

• False

Tags

NGSS.HS-LS1-3

NGSS.HS-LS2-6

Which organ produces insulin?

• Brain

• Liver

• Stomach

• Pancreas

What is the cause of insulin being released?

• a drop (decrease) in blood sugar

• REM sleep

• a rise (increase) in blood sugar

• heavy exercise

Tags

NGSS.HS-LS1-3

What is the effect of insulin being released?

• a drop (decrease) in blood sugar

• REM sleep

• a rise (increase) in blood sugar

• heavy exercise

Tags

NGSS.HS-LS1-3

Maintaining normal blood sugar levels with insulin and glucagon is an example of...

• Positive feedback

• Reflex arc

• Negative feedback

• Magic

Tags

NGSS.HS-LS1-3

Negative-feedback mechanism

• are not homeostatic

• respond by making deviations from normal even larger

• have a receptor, a control center, and an effector

• are rare in healthy individual

Tags

NGSS.HS-LS1-3

Which of these acts as an integrator to process the stimuli and to plan a response?

• heart

• lungs

• brain

• kidney

Which of these acts as the effector in this feedback loop shown above in response to a rise in blood glucose levels?

• Pancreas

• Liver and fat body cells

• Blood glucose level rises

• Blood glucose level falls

Tags

NGSS.HS-LS1-3