EndocrineSystem_2011.notebook
1
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
EndocrineSystem_2011.notebook
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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
EndocrineSystem_2011.notebook
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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:
EndocrineSystem_2011.notebook
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May 13, 2011
Nov 241:36 PM