Body Systems & Feedback Loops

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

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

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

a body system that controls and coordinates all body activities through electric impulses/messages between brain, spinal cord and nerves.

• endocrine system 
• nervous system
• nerve
• neuron

Failure to maintain homeostasis could result in:

• lack of internal balance
• eventual death
• difficulty carrying on metabolism 
• all three

Tags

NGSS.HS-LS1-3

What is released by the pancreas when blood sugar is low?

• glucose
• glucagon
• insulin
• glycogen

Tags

NGSS.HS-LS1-3

The two types of feedback systems that help organisms maintain homeostasis are:

• positive and negative 
• receptor and effector
• static and dynamic
• minor and major

Tags

NGSS.HS-LS1-3

the role of insulin is to

• allow glucose to enter the cells

• break down glucose

• send glucose to kidneys for urination

• non of the above