Anatomy and Physiology II

I took AP1 last semester and didn't really learn anything. But this semester with a different professor, I'm learning lots a snipped of facts. I like to share and note for my purpose. I could post fact of the day. Well I have AP2 class on Mondays and Wednesday at 8am. I'm not a morning person so the last past weeks been tiring. I'm taking naps which I hardly ever do, only if I'm sick.  Another fact about me, I get even more quieter when I'm sick too. lol.

An interesting fact I learned past few months is that you CAN get sunburn on a cloudy day. Why? If I remember correctly you get sunburn from UV light not because it's sunny out and the clouds don't shield the UV from passing through. Makes sense?

The past 4 weeks in AP2 lecture, we've been learning about the circulatory system and beginning lecturing on the lymphatic system today. Anyways, I;ll try to remember the snipped of fact about the circulatory system the profe mention. When heart doctors mention the heart, the left ventricle is really consider "the heart," is the most important because it pumps blood throughout the body.

The payphone booth is the worst place to be when you faint because you can't lay down. When you faint you fall to the ground, being parallel to the ground. makes the blood easier to circulate throughout body. Something about gravity preventing the blood flow back to heart or brain.

Profe told us about a guy ride on a long airplane ride like 18hr ride across the globe and he get off the airplane and just suddenly dies there. It was because sitting for a long time with out moving. Something about the blood flow being constricted in the legs. Muscle contraction and breathing helps push blood back to the heart. He also mention something about the hight altitude and pressure and less oxygen available that I don't remember what. A student ask what can we do to prevent this. Just get up once in awhile, like potty break, walk around, or elevate your legs for the blood moving.