EndocrineSystem_2011.notebook

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May 13, 2011

Nov 20­6:39 AM

Aim: How does the endocrine system work?

Do Now: What messages does your body get while riding a roller coaster?

Homework LE 1:

1. Rd pp. 160­ 161 top, 162­165 165­ 1692. Copy & Answer: p.164 #1,2

3. Compare & contrast the male & female Reproductive organs

Make a chartwhat it does

Use p.485­86

LE 1 5/ 6/2011

LE 3 5/2/2011

Nov 30­12:31 PM

Internal Body Regulation

A. Body is regulated/ controlled by the Endocrine and Nervous systems that receive information from and send feedback to all other body systems

Endocrine System

A. Function­ regulate and coordinate body systems b. Structures­ composed of ductless glands that secrete chemical s called hormones directly into the bloodstream

Glands: Pituitary Hypothalamus Thyroid Pancreas Adrenals Testes Ovaries

Hormone­ chemical messengers made in endocrine glands; these messengers have specific targets in the body

Negative Feedback System­ endocrine system gives itself messages to control the production & release of hormones

Nov 30­12:31 PM

Internal Body Regulation Body is regulated/ controlled by the Endocrine and Nervous systems that receive information from and send feedback to all other body systems

Hormone­ chemical messengers made in endocrine glands; these messengers have specific targets in the body

Endocrine System

A. Function­ regulate and coordinate body systems ­ hormones are released by glands directly into bloodstream ­travel to target cells ­ Receptor proteins in the cell membrane receive the signals b. Structures­ composed of ductless glands that secrete chemical s called hormones directly into the bloodstream

Glands: Pituitary Hypothalamus Thyroid Pancreas Adrenals Testes Ovaries

Negative Feedback System­ endocrine system gives itself messages to control the production & release of hormones

Purpose: Maintain Homeostasis

Nov 20­8:57 AM

Goal:

May 2­1:03 PM May 5­8:43 AM

LE 15/6/2011

EndocrineSystem_2011.notebook

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May 13, 2011

Nov 30­1:53 PM Nov 30­1:16 PM

Nov 24­9:50 AM Nov 30­12:29 PM

Aim: What are negative feedback systems?

Do Now: Describe what your body does when you get hungry?

Homework LE3 5/6/2011 LE 1 5/7/2011Read pp. 484­488P.488 # 1­6

May 5­11:32 AM

Negative Feedback System­

endocrine system gives itself messages to control the production & release of hormones

All homeostatic mechanisms use negative feedback to maintain a constant value ﴾set point﴿

whenever a change occurs in a system, this automatically causes a corrective mechanism to start, which reverses the original change and brings the system back towards the set point

May 5­12:45 PM

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May 13, 2011

May 5­1:30 PM May 6­6:38 AM

May 6­6:29 AM

• Plasmids are then incubated with a weakened strain of E. coli• Since only some of the bacteria will take up the plasmid,a gene encoding an enzyme which breaks down a certain antibiotic is also included in the plasmid, which allows bacteria with the plasmid to grow on a plate containing the antibiotic while the other bacteria die. • These bacteria are then allowed to grow and replicate • Plasmid and the insulin gene replicates millions of times • Bacteria are given a signal to produce the protein, and insulin identical to that of humans can be produced • This insulin, is named humulin, can then be used to treat many people with type I diabetes without the worry of allergic reaction.

Nov 24­10:22 AM

May 5­10:15 AM May 5­11:40 AM

HungryEatsignal from stomach

to brain

Food is digestedMacromolecules break down to building blocks

Blood Glucose Rises;

Stimulates production of Insulin in Pancreas

Glucose delivered to cellsby insulin molecules in the bloodstream

EndocrineSystem_2011.notebook

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May 13, 2011

Nov 24­9:05 AM

Aim: How does the endocrine system help the body achieve homeostasis?

Do Now:What is considered to be normal body temperature?

Why do you think that normal body temperature is as high as the temperature on a hot summer day?

Homework: Use pp.161­1691. Vocab: Homeostasis, negative feedback, hormone

2.Describe and draw a diagram of a negative feedback system.Include organs if you know them.Do not use an example from class

Nov 24­9:02 AM

Homeostasis*Goal of the Nervous System + Endocrine system is to achieve homeostasis by regulating the internal environment.*Homestasis ­ maintenance of the internal environment within tolerable limits

*Examples: heart rate, body temperature, water balance, and the secretions of the pituitary gland).

Nov 20­8:43 AM

Endocrine SystemAlong with the nervous system, it is the bodies control systemHormones­ are the chemicals (proteins) that are sent through the blood by the organs of the endocrine system ­ have target organs ­ a ductless system, released directly into the blood

Pituitary"Master Gland"

Human growth hormoneAdrenal AdrenalinePancreasInsulin

Gonads: Ovaries & Testes

TestosteroneEstrogen

Homeostasis­ A state of balance in the body, ­maintenance of the internal environment within tolerable limits

''Fight or Flight"

Females & males have both hormones* females have more estrogen *males have more testosterone*Testosterone & Estrogen are responsible for secondary sex characteristics

Regulates blood sugar

Organ Hormone Action

Nov 20­11:28 AM

Nov 24­2:04 PM

Hungry

Eat

Digest food

EnergyGlucose goes into blood stream

Insulin transports Glucose fromblood to cells

Pancreas senses blood glucose increase & makes insulin

Pancreas senses decreased BGL

Stops making insulin due to "Negative Feedback" re: BGL

802

Nov 24­10:50 AM

Room202/ 803Comfortable Room

Open window \cold air came in

students­­jackets, and<Fdwirdocrc/ojea

­rubbed arms & hands

­put hands in sleeves

closed window Students relieved

warmer, more comfortable

EndocrineSystem_2011.notebook

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May 13, 2011

Nov 24­9:02 AM Nov 20­8:43 AM

Endocrine SystemAlong with the nervous system, it is the bodies control systemHormones­ are the chemicals (proteins) that are sent through the blood by the organs of the endocrine system ­ have target organs ­ a ductless system, released directly into the blood

Organs

Pituitary"Master Gland"

Hormone

Human growth hormone

Adrenal AdrenalineAction

Pancreas Insulin

Gonads­Testes

­Ovaries

Testosterone

Estrogen Homeostasis­ A state of balance in the body, ­maintenance of the internal environment within tolerable limits

''Fight or Flight"

Females & males have both hormones.* females have more estrogen

*males have more testosterone*Testosterone & Estrogen are responsible for secondary sex characteristics

Regulates blood sugar

Nov 21­12:05 PM Nov 20­8:52 AM

Nov 24­1:36 PM

Aim: How do the endocrine and reproductive systems work together?

Do Now: Describe what would happen to 3 of your body systems if you needed to run for a mile?

Homework

Read pp. 165­169p. 169 # 1, 2, 5, 6

Classwork: Use Reading Essentials Book

Read pp. 78- 82Copy & Answer questions # 1- 6P.82 Copy all vocabulary wordsP.82 # 2

Dec 3­10:41 AM

Reproduction

A. Reproduction & Endocrine System

1. Reproduction is the process that continues life2. The human reproductive system needs hormones to function *Estrogen *Testosterone(There are other hormones)

B. Males1. Sperm cells are produced in the testes, leave through the penis

C. Females1. Egg cells are produced in the ovaries2. If fertilization of egg occurs by a sperm, it can develop in the uterus

D. Menstrual Cycle1. A female's menstrual cycle occurs approx. every 28 days2. If an egg is not fertilized, the lining of the uterus breaks down is shed in a process called menstruation

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May 13, 2011

Nov 20­7:04 AM May 5­12:33 PM

May 5­12:30 PM May 5­12:34 PM

May 5­12:35 PM Nov 20­1:25 PM

Summary

1. Homeostasis is _____________________________________________ and the goal of the endocrine system.

2. The endocrine system releases _______________________.

3. ______________ are chemical messengers that travel through the blood.

4. _______________ are released by the endocrine glands.

5. Negative feedback is when an increase in a _________________ causes the gland to _________ releasing the ________________.

6. Homeostasis is achieved through ______________ feedback.

7. Summarize negative feedback in your own words:

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May 13, 2011

Nov 24­1:36 PM