identify the chemical signal that is released by glands in the endocrine system identify the...
TRANSCRIPT
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• Identify the chemical signal that is released by glands in the endocrine system
• Identify the structure that chemical messages bind to in order to initiate change in the body
• The disease diabetes is caused by a lack of a certain hormone in the body. Which hormone?
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What is Diabetes?
• Read along
• Underline key points
• Answer the questions below
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Examine This Diagram:Can you put the events in order?
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What is happening here?
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Disrupting Homeostasis…
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How do we get back to normal after a change
disrupts our homeostasis?
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HOMEOSTASIS
CHANGE
RESPONSE
CANCEL CHANGE
Negative Feedback- Thermostat
Decrease in temperature
Increase in temperature
Heater turns on
Heater turns off
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HOMEOSTASIS
CHANGE
RESPONSE
CANCEL CHANGE
Negative Feedback- Insulin
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What is negative feedback?
Provide an explanation in your own words on your notes
Summarizing What We’ve Learned
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Negative Feedback- response that reverses changes in the body to restore homeostasis.
Summarizing What We’ve Learned
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White Board Review
Quick Check!
After a question is presented, we will discuss in partners and write our answers on our “white boards”
We will hold these up to show Ms. L if we are Endocrine Experts or Failing Feedback
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1. The ability of the human body to keep blood glucose within a fairly narrow range, despite constant changes in the environment, is an example of
a) the human niche b) genetic evolution c) homeostasis d) thermocrine regulation
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2. Identify the structure in the human body that is the usual source of insulin.
a) the pituitaryb) the thalamusc) the hypothalamusd) the pancreas
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3. Insulin:
a) Causes an increase in blood sugar
b) Is released in response to a decrease in blood sugar
c) Causes cells to use glucose
d) Initiates the production of glucose
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4) A person with diabetes:a) does not make the hormone insulinb) does not make the hormone glucagonc) does not respond to insulind) either a or ce) both a and b
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5.Which of the following is NOT an example of negative feedback.
a)the body experiences a decrease in temperature, this initiates shivering which raises the internal body temperature
b) Hormone A is released in response to an increase in blood pressure. This triggers the release of hormone B which increases the production of Hormone A
c) Insulin is released in response to an increase in blood sugar. It decreases the amount of sugar in the blood and then is no longer released
d)Hormone 2 is secreted in response to dehydration. This triggers the body to increase its water intake, which also stops the secretion of hormone 2.
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HOMEWORK• Remaining Classwork problems
• HW 2.6- Negative Feedback and Diabetes
• REMINDER: Presentation Dates– Muscular/Skeletal: WEDNESDAY 10/5– Circulatory/Respiratory: THURSDAY 10/6– Excretory/Digestive: TUESDAY 10/11