PEDS200 Lecture : Hormones

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taupewalrus464

22 Dec 2011

School

University of Alberta

Department

Physical Education and Sport

Course

PEDS200

Professor

Dan Syrotuik

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Document Summary

Hormone basics secretion and removal y stimulation is from neural response (ex. Stimulation of epinephrine/norepinephrine from adrenal medulla), other hormones (ex. Insulin: increase in glucose and amino acid uptake; increase in synthesis of fat y glucagon: increase in glucose release from liver; increase in breakdown of fat. Anabolic ( build-up ) examples y testosterone: increase protein synthesis y gh: increase in cell growth and protein synthesis. Catabolic (breakdown) examples y cortisol and to a lesser extent glucagon: increase protein breakdown and increase in production of glucose. General hormone mechanism of action y induce secretory activity y ex. Exercise can increase thyrotropin (tsh) releasing factor produced by hypothalamus that acts on anterior pituitary to produce thyrotropin which stimulates the secretion of thyroxin from thyroid: increase metabolic rate, hr, etc. Exercise can increase epinephrine and initiate a second messenger system (ex. Cyclic amp system) that increases the breakdown of muscle glycogen among other things. y the cyclic amp mechanism of hormone action.

Related Questions

Which of the statements regarding this situation are true? Selectall that apply.

1- Reversing the sign of the capacitor voltage while keeping themagnitude of the voltage the same reverses the electric field atall locations, but does not change the magnitude of thefield.
2- Reversing the sign of the capacitor voltage while keeping themagnitude of the voltage the same reverses the vertical componentof the electric field at all locations, but does not change themagnitude of the field or the horizontal component of the field ata given location.

3- In this simulation when the capacitor voltage is set to apositive value the top plate has a positive charge on it and thebottom plate has a negative charge on it.

4- Increasing the magnitude of the capacitor voltage while keepingthe plate separation constant increases the magnitude of theelectric field at all locations (except for locations where thefield is zero, which remain at zero).

5- Increasing the plate separation while keeping the capacitorvoltage constant decreases the magnitude of the electric field atall locations.

6- In general, decreasing the separation between the platesincreases the magnitude of the electric field between the plates.

Hi this is the introduction that I have written for my poster. Myposter is on the following URL (please have a look!).

http://i55.tinypic.com/e0g0w5.jpg

Please correct the introduction for any scientific or grammaticalerrors and give me your suggestions about this section as well asthe overall poster. Thanks

This is very important so if you are not good at it pleasedon't answer.

Here is the introduction :

Have you ever thought about why would thrilling rides getyou excited, make your heart racing orsometimes even make you start screaming from the depths of yourcore, forming a bead of sweat on your forehead?

Well, the answer lies in physics. These rides demonstratevery good examples of the physics laws and concepts involved innature and their affect on us in real life applications.

Height, weightlessness, high velocity, hugeacceleration, the sudden impulse and themomentary change in momentum, the work being done and the suddenchange in energy are all factors that contribute inmaking a thrilling ride an exciting one. Those factorsmake adrenalin concentrations in our body system increasecausing higher blood pressure thus stimulating theheart.. They also make the rider in a lot ofuncertainty and unexpected visual cues.

An example of a thrilling ride is the Giant Drop which isa freefall ride involving the drawing of an eight seat carriage bytwin cables to the top of the tower. After one minute full ofanxiety, the riders are plummeted down a height of 39 stories(almost 115m) then brought to a halt within meters from the groundby a sophisticated magnetic braking system.

1. If a car's wheels are replaced with wheels of greater diameter,will the reading of the speedometer change? Explain.

2. Weightlessness in space is known to have harmful effects on thebodies of people in space. To set up inhabitants (people) in space,it has been suggested that rotating cylinders about 10 miles longand 5 miles in diameter be placed in space. The purpose of theirrotation is to simulate gravity for the people so they have weight.Explain how this is possible?
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Please use DragMath to submit the solutions to problems No. 5 and 6of Activity 9A on page 129 of Bendall & Howison.
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1. Why do the string instruments go flat (lower frequencies) andthe wind instruments go sharp (higher frequencies) during aperformance if an orchestra doesn't warm up beforehand?
2. If you were carrying a fish tank filled with water, what willhappen if your walking frequency matches the natural frequency ofthe water in the tank?
Good luck with these questions. I look forward to a heartydiscussion by Friday this week.
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1. Household circuits are always wired so that the electricaldevices are connected in parallel. Why is this so?
2. How are circuit breakers connected in the household circuits(series or parallel)? What is the use of a circuit breaker? Why isit more advantageous to use a circuit breaker compared to using afuse?
Hope to hear your answers soon.
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Mathematical Question:
Try the question on capacitors Activity 14C no. 3. You can useDragmath to submit your solution. If you are scanning your answersand uploading a file, please keep its size small.
Challenge Question:
A fully charged parallel-plate capacitor remains connected to abattery while you slide a dielectric between the plates. Do thefollowing quantities increase, decrease, or stay the same? (a)capacitance, C (b) charge, Q (c) electric field, E between theplates, (d) change in voltage, V (e) energy stored in thecapacitor.
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Twisted wires: In electrical circuits, it is often the case thatinsulated wires carrying currents in opposite directions aretwisted together. What is the advantage in doing this?
Have a go; looking forward to some interesting replies.
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Metal detectors in airports: When you walk through the doorway ofan airport metal detector, you are really walking through a coil ofmany turns, i.e. an inductor connected to a resonant circuit tunedto the resonant frequency when there is no metal in the inductor.So how does this circuit detect any metal that is in your pocketwhen you walk through the metal detector?
Looking forward to your replies.
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PEDS200 Lecture : Hormones

Document Summary

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Physics: Principles with Applications

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