Tuesday, May 25, 2010

Adrenal medulla and the Hormones secreted

ADRENALINE RUSHED!

I was standing in front of the crowd. I was on a stage, trembling while holding the microphone. I can hear my palpitations louder than the yell of the audience. I wanted to start my speech. I decided to but as I tried to speak, my tongue moves back and no voice is produced. My thoughts are very vague now. The only thought that is clear is a query to me, should I go or pursue this delivery?

Perhaps most of us had experienced being stocked in a situation where we are uncomfortable and stressed of it. We wanted to seek help. We even wanted to call for a time out “Hey, can I just continue tomorrow? I’m a little nervous right now.” But no we couldn’t just say that. We can’t always leave the crowd when the spotlight is shone upon us. The resort that has been always chosen is to continue the presentation. Curtains up and red carpet rolls. One, two, three. .

The good thing for stressing situation is we do not have to fight alone. We have armor inside us ---- our adrenaline system. Our adrenaline system is responsible for our fight or flight response. The fight or flight response is our body's primary, automatic, innate response that prepares the body to "fight" or "flee" from apparent attack, stress, harm or threat to our endurance. It is composed primarily of the adrenal medulla. The adrenal medulla is innervated by the neurons of the sympathetic nervous system or otherwise known as the sympathetic preganglionic neurons. The adrenal medulla synthesizes two important hormones in the body which are epinephrine and norepinephrine.

Epinephrine is secreted in cases of low blood glucose level. Norepinephrine secreted by the adrenal gland acts to narrow blood vessels and raise blood pressure. However, release of these hormomes is also stimulated when we experience excessive stress—whether from internal worry or external circumstance. This is where our fight or flight response occurs.

Dramatic changes occur brought by series of nerve cell firing and chemical release in the body. The grasp for air boosts thus respiratory rate increases. To supply body energy and fuel for escaping or fighting, blood is thrust away from our digestive tract and directed into our muscles and limbs. The pupils dilate and sight sharpens. Our alertness intensifies. Our impulses accelerate. We least likely feel pain. We become ready or geared up—physically and psychologically—for fight or flight.

Our body is indeed the best example for organization. We really are magnificent creatures made by God. He never brought us here unprotected. On the other hand, we were geared enough to face a fight or fly if we can’t do anything about it. We are like superman where we can do unexplainable things when under stress with our adrenal gland. So what’s the dash, if we have adrenaline rush?

http://www.thebodysoulconnection.com/EducationCenter/fight.html

http://www.medterms.com/script/main/art.asp?articlekey=9702

3 comments:

  1. Hello Lilybeth,

    PROS

    Good presentation.
    K.I.U!

    CONS

    You can connect medical terms to links outside of your site.

    ReplyDelete
  2. hi bethy! i enjoyed ur post. heheh. good work. i hope you'll make your compositions more interesting and more informative.

    ReplyDelete
  3. With this easy and nice to read page you just summarized a whole chapter of my anatomy book! Thanks :)

    ReplyDelete