Do Now: (in your notebook) What is a hormone? What does it do? What are some examples of hormones that you

know of?

Homework: Complete the Hormone Worksheet.

Today’s Objectives: Explain what a hormone is and how it works in the

body Describe two examples of hormones and their effects

EPICS Food: Tuesday, 1.26.10The Endocrine System: Hormones

Thoughts on the Midterm Exam Project

What most people did well: Gathering data Using class time effectively

What those who failed didn’t do: Analyze the data to demonstrate in detail what you

learned this year Respond thoroughly to each project component listed

on the rubric Many people also struggled with…

Time management outside of class Project components not completed by suggested deadlines Individual Project Parts (I and II) not finished by exam time

Thoughts on the Midterm Exam Project

Student complaints: “I would have rather had an exam…”You already know how to take exams. This is a

project-based class, where you learn to apply knowledge to real-world problems. This is a much more useful skill for jobs & life than taking exams.

“I wrote 8 pages…”Quantity ≠ QualityMost people presented high-quality data but not

high-quality analysis.

Thoughts on the Midterm Exam Project

Next Steps: Revisions or completion of revision chart

(emailed) Due by 4:30 pm sharp this afternoon (grades due

tomorrow @ 8 am!) Treat this as a learning experience…

Time management (how can I help?) Using resources (notes, data provided) and

applying info to a given problem/project Reading rubric carefully Knowing when and how to ask for help

EPICS FOOD:THE ENDOCRINE SYSTEMWeek of January 25, 2010

Human Body Systems:Connected by the Circulatory System

Endocrine System

Function: Communicate

between different organs of the body

Using hormones – signal molecules that travel through the bloodstream

Hormone Signaling – 3 Steps

1. Hormone is made within endocrine cells (inside glands or other organs).

2. Hormone is released into bloodstream and travels to target cells.

3. Hormone binds to target cells and triggers a response.

1.2.

3.

Released from: Hypothalamus (sensor in the brain)

Triggered by:Dehydration (low water levels in blood)

Target Organs: Kidneys Effects:

Kidneys keep more water in the blood

Urine becomes more concentrated, smaller in volume

Example: Anti-Diuretic Hormone

Yellower, low-volume urine

Example: Adrenaline (a.k.a. Epinephrine)The “Fight or Flight” Hormone

Skeletal Muscles

Released from: Adrenal glands (just above kidneys)

Triggered by:Immediate stress!

Target Organs & Effects: Blood vessels in skeletal

muscle More blood to muscles

Blood vessels in digestive tract Less blood to stomach & intestines

Liver cells Release glucose into bloodstream for quick energy

Heart muscle Raise heart rate and blood pressure

Overall Effects:• Heart pumping, BP up, muscle have lots of sugar and oxygen to make ATP and react fast.• Less blood to digestive organs so as not to waste energy there

More Hormone Examples…

More Hormone Examples…

More Hormone Examples…

Homework:Finish your summary of the Diabetes-Obesity article.

Do Now:Make a chart like this in your notebook:

EPICS Food: Thursday, 1.28.10Food-Related Hormones… in the Context of Scientific Literacy

Hormone Ghrelin Leptin Peptide YY

Insulin Glucagon

Released from

Stomach Fat tissue Small intestine

Pancreas Pancreas

Triggered by

Time since last meal (& other things)

Increase in amount of body fat

Eating Rise in blood sugar

Blood sugar too low

Target Organs

Brain Brain Brain Liver, brain, and muscle cells

Liver

Effects on Body

Feelings of hunger

Suppresses appetite (feel less hungry)

Feel less hungry

• Lowers appetite• Makes cells take in glucose blood sugar goes down

• Makes liver cells release glucose into bloodstream blood sugar goes up

Agenda & Objectives Today’s Objectives:

Explain how hormones help to regulate blood-sugar levels and feelings of hunger

Use specific reading strategies to understand non-fiction scientific articles about hunger hormones

Use video to learn the differences between type 1 and type 2 diabetes.

Agenda: Period 1: Close reading of a hormone-related science

article Period 2: Videos on diabetes; article on obesity &

diabetes

Final Reading Assignment for Today Read the two articles on Obesity & Diabetes Use the same strategies you used to read the

article from the first part of class On a separate piece of paper, summarize:

The specific main idea of the articles The steps in the process that link obesity and

type 2 diabetes (found in the “Critical Link” article)

The evidence for this discovery (found in the “New Culprit” article)

How you could use this information to engineer a drug that prevents type 2 diabetes

Do Now: Compile all assignments from last week EXCEPT

the recent notes on obesity & diabetes. Turn everything else in.

Think of something startling or annoying that you could do to the person sitting next to you.

Homework: Circulatory System Reading and Notes

Today’s Objectives: Illustrate the links between obesity and diabetes.

EPICS Food: Monday, 2.1.10Wrap-Up: Links between Obesity & Diabetes