Thoughts and opinions:
Above and beyond:
here are some ways to make child birth less painful... http://kidshealth.org/parent/pregnancy_newborn/pregnancy/childbirth_pain.html
Thoughts and Opinions:
It's kind of crazy how much a sperm a guy produces in relation to how many eggs a girl produces. In his lifetime, a guy will produce around a trillion sperm compared to a girl's 400 000 eggs in her lifetime, of which only around 400 will be ovulated. Jeez, take a rest guys.Above and Beyond:
Wednesday, March 12, 2009
Kaitlyn Marbeiter, March 12, 2009, Blog#1, 3/3
What we did today:
Thoughts and Opinions:
I find it really interesting how simple chemicals (hormoes) can affect so many things in the body. And how fast it happens. When we were talking about the endocrine system and the hormones adrenaline and how it affects stress, it made me think about why you sometimes get the "jitters" when you have an adrenaline rush ?!??
Above and Beyond:
I started looking up information on "why you get the jitters?", and here is an interesting link i found:
http://answers.yahoo.com/question/index?qid=1006051119223
Basically, its just due to all the adrenaline! Groovyyy. =D
In a preliminary study, the hormone oxytocin was shown to be associated with the ability to maintain healthy interpersonal relationships and healthy psychological boundaries with other people. The study appears in the July issue of Psychiatry.
"This is one of the first looks into the biological basis for human attachment and bonding," said Rebecca Turner, PhD, UCSF adjunct assistant professor of psychiatry and lead author of the study. "Our study indicates that oxytocin may be mediating emotional experiences in close relationships."
The study builds upon previous knowledge of the important role oxytocin plays in the reproductive life of mammals. The hormone facilitates nest building and pup retrieval in rats, acceptance of offspring in sheep, and the formation of adult pair-bonds in prairie voles. In humans, oxytocin stimulates milk ejection during lactation, uterine contraction during birth, and is released during sexual orgasm in both men and women.
Turner and her colleagues tested the idea that oxytocin is released in response to intense emotional states in addition to physical cues. Twenty-six non-lactating women between the ages of 23 and 35 were asked to recall and re-experience a past relationship event that caused them to feel a positive emotion, such as love or infatuation, and a negative emotion, such as loss or abandonment. Because massage done on rats had previously been shown to influence oxytocin levels, the participants also received a 15-minute Swedish massage of the neck and shoulders. Blood samples were taken before, during, and after each of the three events to measure baseline oxytocin levels in the bloodstream and any change.
The results, on average, were of borderline significance - relaxation massage caused oxytocin levels to rise slightly and recollection of a negative emotion caused oxytocin levels to fall slightly. Recollection of a positive emotion, on average, had no effect.
What surprised the researchers, however, was how differently each woman responded. Some participants showed substantial increases and decreases while others were largely unaffected.
