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Subject: Re: stress response


Author:
Debbie
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Date Posted: 15:30:13 08/25/01 Sat
In reply to: bronwyn 's message, "stress response" on 15:37:36 08/22/01 Wed

Ok, I'll have a go at answering this Bronwyn.
Norepinephrine binds with beta receptors in the heart to strengthen contractions. Dilates the bronchioles for more air intake, stimulates the adrenals to release more epinephrine to sustain and prolong the effects.

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Author:
bronwyn
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Date Posted: 15:25:48 09/02/01 Sun

quite correct debbie
a bit more detail is required.

Norepinephrine binds with beta-1 receptors on heart muscle
to strengthen contractions. Also binds with same receptors on sinoatrial node to increase heart rate.

Dilation of the bronchioles occurs due to Norepinephrine binding with beta-2 receptors

stimulates the adrenals to release more epinephrine and norepinephrine.


Any ideas about the glucocorticoids???

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