Research published in the latest issue of the journal Physiological and Biochemical Zoology illustrates a complex series of changes that occur in grizzly bears' hearts as they hibernate. The changes guard against complications that could arise from greatly reduced activity. A grizzly hibernates five to six months of the year. During that time, its heart rate slows drastically from around 84 beats per minute when active to around 19. "If a human heart were to slow down like this, you'd see very detrimental things happening," said Bryan Rourke, a professor at Cal State Long Beach who worked on the research with his graduate student, Nathan Barrows.
http://www.sciencedaily.com/releases/2011/02/110207142625.htm
The Moon is Waning Crescent (19% of Full)
Re: Change of Heart Keeps Bears Healthy While Hibernating
All posts are those of the individual authors and the owner
of this site does not endorse them. Content should be considered opinion
and not fact until verified independently.
February 07, 2011 01:49PM |
Sorry, only registered users may post in this forum.
