Anatomy B/C

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Re: Anatomy B/C

Postby butter side up » February 18th, 2012, 10:46 am

Annlie wrote:Does anyone know exactly what we need to know for GFR calculation? Does anyone know how to calculate GFR?

GFR [glomerular filtration rate] is the rate at which the glomerulus filters solutes and water from the blood. It is usually expressed as volume per time, most often mL/min. It is measured by measuring the amount of a solute that is freely filtered, and neither reabsorbed nor secreted in both the urine and the blood stream. If the GFR is low, it can be a sign of renal failure.

It is calculated by GFR= (urine concentration x urine flow)/ plasma concentration.
The urine flow is the volume of urine collected over time.

It can also be measured using radioactive isotopes or inulin. [NOT insulin!] However, the typical method is using the creatinine clearance, which uses creatinine for the solute. Due to the fact that it is minimally secreted, this can result in an overestimation of 10-20%, but considering the ease of this procedure, it is considered acceptable. Typically, the urine is collected for 24 hours to determine the amount of creatinine removed from the blood over that time.

I don't know how much of this you may need beyond a basic understanding, as I have seen some tests that were fairly basic and some that were ridiculously in-depth with the questions on physiology, but I hope this helps!
Alternatively, you can consider that if one removes 1440 mg in 24 hours, that is equal to 1 mg/minute. If the blood concentration is 0.01 mg/mL, then 100 mL/min of blood is being cleared, since, to get 1 mg of creatinine, 100 mL of blood containing 0.01 mg/mL would need to have been cleared.
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Re: Anatomy B/C

Postby AzureWotan » February 21st, 2012, 9:25 am

Hey, this is my final event. Im all alone, and I havent started my notes yet. Any tips?
Like what should go on the notes, what to memorize, etc
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2012: Disease Detectives, Forensics, Anatomy
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Re: Anatomy B/C

Postby foreverphysics » February 21st, 2012, 10:46 am

To be honest, you should have started studying long before now. But let’s forget about that for a second and focus on what you need to do. Since I’m in Div B, I can’t tell you anything about the excretory system; however, that closely follows the digestive system, so that shouldn’t be too big of an issue.
For the respiratory, know the path of airflow, the different kinds of breathing, the histology of…well, everything, capillary diffusion, pulmonary pressures, the gas laws, the muscles that control breathing…etc., etc.
For the digestive, know the GI tract, the histology, the layers of muscle, the different hormones and chemicals, what cells secrete what which cause what other cells to secrete what that triggers what, chloride shift…
Just, you know, get a textbook and read through the systems. Yes, all of it. And take notes. Then make your sheet. Also, when your competition is decides for you how much time you get on all this.
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Re: Anatomy B/C

Postby rkoopma2 » February 21st, 2012, 3:35 pm

AzureWotan wrote:Hey, this is my final event. I'm all alone, and I haven't started my notes yet. Any tips?
Like what should go on the notes, what to memorize, etc

For the Excretory system you should know the anatomy of the kidneys, ureters, bladder, and urethra, parts and function of the nephrons. Steps of urine formation. plus the diseases and disorders on the rules.

Also, when your competition is decides for you how much time you get on all this.

Michigan regionals aren't until mid-march or later, so you'll have some time.
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Anatomy and Physiology: 6
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Microbe Mission: 21
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Re: Anatomy B/C

Postby SciBomb97 » February 21st, 2012, 7:18 pm

rkoopma2 wrote:
AzureWotan wrote:Hey, this is my final event. I'm all alone, and I haven't started my notes yet. Any tips?
Like what should go on the notes, what to memorize, etc

For the Excretory system you should know the anatomy of the kidneys, ureters, bladder, and urethra, parts and function of the nephrons. Steps of urine formation. plus the diseases and disorders on the rules.

Also, when your competition is decides for you how much time you get on all this.

Michigan regionals aren't until mid-march or later, so you'll have some time.

That is still going to be a very humongous handful of things to study, assuming that you're looking to do well. Good luck! :D
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Re: Anatomy B/C

Postby AzureWotan » February 22nd, 2012, 9:36 am

This is my first year doing it, How do you guys balance 3-6 events >.<
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Re: Anatomy B/C

Postby foreverphysics » February 22nd, 2012, 12:21 pm

It's not too bad. If you're me, you balance about 8 events, and then go worry about doing assessments for SO in general. ;)
Anatomy does require a lot of work and memorization, though.
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Re: Anatomy B/C

Postby AzureWotan » February 23rd, 2012, 9:22 am

foreverphysics wrote:It's not too bad. If you're me, you balance about 8 events, and then go worry about doing assessments for SO in general. ;)
Anatomy does require a lot of work and memorization, though.

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Re: Anatomy B/C

Postby wobanumous » February 23rd, 2012, 11:36 am

I need help on making a cheat sheet for anatomy. Do yall have any tips on what I should put on my cheat sheet like the diseases, functions, measurements, etc?
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Re: Anatomy B/C

Postby foreverphysics » February 23rd, 2012, 11:49 am

A cheat sheet is for you to put whatever you don't know on there. So whatever you don't know, put on there. No one can make your cheat sheet for you; you have to do it yourself.
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Re: Anatomy B/C

Postby wobanumous » February 23rd, 2012, 12:10 pm

foreverphysics wrote:A cheat sheet is for you to put whatever you don't know on there. So whatever you don't know, put on there. No one can make your cheat sheet for you; you have to do it yourself.
Thank you for your help :)
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Re: Anatomy B/C

Postby SciBomb97 » February 23rd, 2012, 5:59 pm

wobanumous wrote:I need help on making a cheat sheet for anatomy. Do yall have any tips on what I should put on my cheat sheet like the diseases, functions, measurements, etc?

Some things you should put on your cheat sheet:
A labeled spirograph with the various volumes and capacities
An oxygen-hemoglobin dissociation curve
A chart of oxygen and carbon dioxide partial pressures throughout the body
Labeled diagrams of respiratory and digestive organs
A chart of digestive enzymes and hormones and their functions

A rule of using your cheat sheet: try not to put things on it that you didn't study, only things that you might have trouble remembering, such as information regarding numbers and charts of many related things.

Hope that helps! :D
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Re: Anatomy B/C

Postby foreverphysics » February 23rd, 2012, 7:38 pm

...And this is when I realize how useless I am at giving advice. :P
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Re: Anatomy B/C

Postby AzureWotan » February 24th, 2012, 9:37 am

Quick question.
How long did you guys have to prepare for your events?
Our class started a bit after thanksgiving and we only started working on our events in late January.
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Re: Anatomy B/C

Postby foreverphysics » February 24th, 2012, 10:07 am

We started in early December. Orientation was in September, but we didn't start any practices until December. That is very late--less than two and a half months to prepare, plus winter break...the lab's not just open all the time, you know.
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