Back to top
All Humans Are Welcome Here!

Blog

Nelco Amica Sewing Machine

I am very excited about my luck thrift purchases, particularly my Nelco Amica sewing machine. Heck, I’m ecstatic about my sewing machine. It’s the first one I ever bought for myself and I wasn’t counting on it working when I chanced buying it. But not only does it work, but it’s a champ. Sews through… continue reading

A Recipe: Pumpkin-Cranberry Cookies

Recipe by Lucy Randall via AllRecipes.com. Makes 3 dozen of the best cookies (that aren’t chocolate chip) EVER! Ingredients 1/2 cup butter, softened 1 cup white sugar 1 teaspoon vanilla extract 1 egg 1 cup solid pack pumpkin puree 2 1/4 cups all-purpose flour 2 teaspoons baking powder 1 teaspoon baking soda 1/2 teaspoon salt… continue reading

A Recipe: Tiramisu

Caroline’s Tiramisu Recipe First you gotta brew about 2 cups of super-strength espresso (or have a local cafe do it for you), then put in some rum to taste (super strong). Put that aside. Buy two angel food cakes (or make ’em!) and cut them into 1/2″ strips; toast/broil until golden. Put that aside to… continue reading

Breathing, Part I

You’ve probably noticed already that breathing and respiration have a lot to do with chemistry, and that because you’ve most likely taken it for granted, it is surprisingly complex, dynamic, and interesting… This website is an overview of what happens as you breathe, starting with some basic anatomy and working into chemical principles that govern… continue reading

Breathing, Part II

What makes lungs expand and contract? Are they muscles? No, the lungs aren’t muscles. *Special* respiratory muscles “make” breathing happen. Normally an involuntary act, breathing can also be consciously controlled and altered, thank goodness. Although technically many muscles of the thorax can participate in breathing, any decent yogi will tell you that the diaphragm is… continue reading

Respiration, Part I

Breathing and respiration aren’t the same thing, but they go hand in hand. Breathing is a simple mechanical process whereby air enters and exits the lungs due to volume and hence, pressure changes. Respiration* is a more complex process of delivering oxygen to the tissues for cell metabolism and carbon dioxide to the lungs for… continue reading

Respiration, Part II

We’ve explained why air enters the lungs, what components flow in/out and why, but we still haven’t discussed internal and external respiration! Regard the image at right. Find the sad face. Here the blood is CO2 rich (45 mm Hg) and low in oxygen (40 mm Hg). This sad blood is being delivered to the… continue reading

Respiration, Part III

Oxygen and carbon dioxide are carried in the blood, pumped by the heart, and shifted through membranes by partial pressure gradients. Oxygen dissolves to a much smaller degree than carbon dioxide, so that at rest, the PO2 would only help provide 6% of the body’s O2 requirements. There must be another way. The hemoglobin molecule… continue reading

Respiration, Part IV

Successful respiration requires a delicate acid-base equilibrium in bodily fluids. H+ concentrations, however meager they may be, significantly impact fluid pH. Furthermore, hydrogen ions are highly reactive and react with many compounds, often disrupting their shape and function. Hydrogen ion concentrations must be maintained at ~4.0 x 10-8 in order to keep blood pH at… continue reading

Conclusion, Links, Sources

In conclusion, I’ll talk about two things I’ve never even done: scuba (darn) and the bends (thank god). These underwater phenomena summarize very well the concepts I’ve outlined. As a note, this page would be set to some of my favorite music, but amazonkers.com and towersucks.com don’t have sound samples for “Underwater Love” and “The… continue reading

A Little Menu
Do NOT follow this link or you will be banned from the site!