BIO 282 Lecture Notes - Lecture 3: Cortisol, Pituitary Gland, Adrenocorticotropic Hormone
Document Summary
This week we are looking at how cells respond to signal termination. Stimulus to endocrine cell to blood vessel then to target cell. Stimulus triggers neurons can detect change and trigger hypothalamus which releases chemical signal into blood stream before getting to the target cell. Stimulus triggers neurons to trigger hypothalamus which will release chemical signals that bind with endocrine cells. Key point: physiological regulatory pathways are mediated by the nervous system, endocrine systems, or a combination of the two. Stressor (perceived threat) stress response hypothalamus releases crh pituitary gland releases acth adrenal cortex releases cortisol (responses in 5-10 min or sometimes hours) physiological responses to help survive threat. Stressor (perceived threat) stress response sympathetic ns (sec)-release or neurotransmitter norepinephrine adrenal medulla releases epinephrine physiological responses to help survive threat. Stressor (perceived threat) stress response sympathetic ns (sec)-release or neurotransmitter norepinephrine physiological responses to help survive threat.
