Why doesn't decreased insulin secretion during stress cause problems?

  1. During fight-or-flight situations, alpha 2 receptors ( which are inhibitory receptors ) of the pancreatic beta cells are stimulated, and as a result there's decreased insulin production. While it benefits the body by producing increased blood sugar level, I don't understand why Insulin doesn't cause some problems. Such as, since insulin increases glucose intake by the muscle tissues ( skeletal muscles are supposed to be used more in flight-or-fight situations ) and increases glycolysis ( which produces energy ), wouldn't decreased insulin release during flight-or-fight situations cause less glucose intake and less glycolysis ( as a result less energy production ) by the muscle tissues? And wouldn't less energy produced by the muscle tissues cause them work less efficiently?
     
  2. jcsd
  3. Pythagorean

    Pythagorean 4,622
    Gold Member

    Adrenaline!

    http://en.wikipedia.org/wiki/Epinephrine#Mechanism_of_action

    Reference [20] (a text book):

    http://books.google.ca/books?id=zFl...s+of+Medical+Physiology&source=gbs_navlinks_s
     
  4. Overall ongoing research also confirms that muscles can increase their glucose uptake
    via other receptors or channels independent of INSULIN also.
    Adrenaline pumps them up !

    reference Ganong medical physiologe 23 edition.
     
    Last edited by a moderator: Oct 31, 2013
  5. Evo

    Staff: Mentor

    Please post a link to the specific passage you are referencing in this book. Thank you. The book is copyrighted, so you may only quote the specific passage.
     
Know someone interested in this topic? Share a link to this question via email, Google+, Twitter, or Facebook

Have something to add?

0
Draft saved Draft deleted