The Urinary System

Upon hearing from my teacher that tea and coffee are diuretics, meaning stimulates peeing, I was curious as to why that was. So I don't have a terribly specific question, rather, what can I learn about this?
The first interesting thing I discovered is that there are many websites and blogs dedicated to tea alone. But among these, I gathered many interesting facts on tea as a possible diuretic. 
Tea leaves that contain caffeine have diuretic properties, however, in order to experience diuretic effects one would have to drink enough cups of tea to take in 300 mg of caffeine which would be roughly 6 cups of regular caffeinated tea, according to these sites. 

http://theteamaestro.blogspot.ca/2012/03/does-drinking-tea-produce-diuretic.html

http://www.yourteahq.com/diuretic-tea/


While there are clear negative effects of ingesting too many foods with diuretic properties (such as dehydration), diuretics may be helpful in lowering high blood pressure and promoting the urinary system to excrete toxins in the blood. 
In fact, diuretic pills are used to help people with illnesses such as edema.

http://www.yourteahq.com/diureticgreentea/





















While tea may have many health benefits, the caffeine in the leaves can have diuretic effects, so when it comes to tea, there does exist the idea of having too much of a good thing. 

Nephrons

http://www.youtube.com/watch?v=5bbR78OGg1c

We'll let the video do all the talking.


Created by Jamie and myself.

Playland!

After completing the respiratory and cardiovascular systems unit, we went on a field trip to Playland to further study these systems on a more personal level (as if dissecting a heart was not personal enough). Like the good little lab rats we are, we've discovered many different physical reactions that occur in an amusement park and take place in the respiratory and cardiovascular systems... and even in the digestive system. 

For example, while waiting in line for Playland's famous wooden roller coaster, our hearts were steady, though slightly faster from the excitement (and the speed walk across the park). This was much a different story when we finally planted our butts into the seats and the single metal bar that was to be the only thing preventing us from falling out, lowered and sealed our fate. And while we may have thought our pulse could not be faster than it was at the top of the first hill, we were proven wrong many, many times. By the end of the ride, with watery eyes, racing hearts, sweaty palms and brilliant smiles we had survived the physical turmoil of the wooden roller coaster. 

Little did we know, that there was much more to come.

As part of the 'fight or flight' tactic built into humans, when we approached and ended the roller coaster, our heart rate increased due to fear or stress. Something that no reasoning in our minds of only the most professional engineers having been chosen to construct the roller coaster could override. 

As a result, our hearts began to pump more blood and our nerves began to prepare for a swift response. 

Some other reactions included- but were not limited to- sweaty palms at the sight of the Hellovater, dizzy feelings from the Atmosphere, and that wonderful queasy 

Oh, and there was and unfortunate case of vomiting brought on by the amusement park food (but I won't name names).

As far as breathing rate goes, I felt I remained fairly consistent. 

I Spy, with my little eye, Ms. Phillips photo bombing...