Embryonic

My opinion has stayed the same ever since I first read about stem cells months ago.  Stem cells have still proven useful in technological advances in medicine.  Without research of stem cells, especially embryonic, people would never be able to find cures for Alzheimer's or Parkinson's disease.  Embryonic cells are better than adult stem cells because they are at the stage where the cell hasn't decided which branch of cell it wants to go into.  This is helpful for people with deficiencies such as low blood sugar.  People could have embryonic stem cells implanted in them so the stem cells could become cells that carry insulin.  Diabetes would no longer exist if we use stem cells.  This and many more cures and uses could be found if we researched more in depth about the use of stem cells.  So my opinion hasn't changed at all ever since the first article.

Homeostasis

In the morning when I wake up, I'm always cold when I get crawl out of my bed sheets.  I'm shivering when I get out of bed because my body is adjusting to the climate of the room.  Also, I always have to go to the bathroom right when I get up.  I don't wake up in the middle of the night to go to the bathroom so my bladder is full.  The organ system involved with me having to go to the bathroom when I get up is the excretory system. They haven't been used in over 7 hours so when I'm awake I feel the effect.  The feedback loops I'm experiencing would be negative feedback loops because my body is adjusting to maintain homeostasis.  I wouldn't go through positive feedback because my body doesn't permanently change to acclimate to my surroundings.  A positive feedback is a quick change so to say, while negative feedback is like meters constantly adjusting to maintain the body.  To make sure my body doesn't go through too extreme changes, it goes through negative feedback.  Through negative feedback, the body adjusts slowly over time instead of instantly.  Such a drastic, rapid change could potentially have dangerous effects.