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Hello everyone.
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Today we will be reviewing stress response and the endocrine organs that form part of this process.
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Now stress response is very important and short -term stress response is what helps the body successfully respond to an emergency, for example, if the person is running away from a fire or is trying to avoid get hit by a car.
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This process is what helps the body react in a fight or flight situation.
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Now, in order for the body to response, the first step is that the action potentials triggered by the hypothalamus in response to the stress, activate the sympathetic nervous system.
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So that is the first step.
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The action potentials.
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And we're going to abbreviate it ap are triggered by the hypothalamus in response to the stressor to activate the sympathetic nervous system.
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Now, the next step is that the action potentials travel along the pre -ganglionic sympathetic axons to the adrenalum medulla.
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Now, the third step is that the adrenalomedula secretes hormones, mainly epinephrine and sun norephenephrine.
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Epinephrine is around 80 % of the secreted hormones and norepinephrine is 20%...