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  2. Sympathoadrenal system - Wikipedia

    en.wikipedia.org/wiki/Sympathoadrenal_system

    The sympathoadrenal system is a physiological connection between the sympathetic nervous system and the adrenal medulla and is crucial in an organism's physiological response to outside stimuli. [1] When the body receives sensory information, the sympathetic nervous system sends a signal to preganglionic nerve fibers , which activate the ...

  3. Sympathetic nervous system - Wikipedia

    en.wikipedia.org/wiki/Sympathetic_nervous_system

    Therefore, this response that acts primarily on the cardiovascular system is mediated directly via impulses transmitted through the sympathetic nervous system and indirectly via catecholamines secreted from the adrenal medulla. The sympathetic nervous system is responsible for priming the body for action, particularly in situations threatening ...

  4. Adrenal medulla - Wikipedia

    en.wikipedia.org/wiki/Adrenal_medulla

    The adrenal medulla is the principal site of the conversion of the amino acid tyrosine into the catecholamines; epinephrine, norepinephrine, and dopamine. Because the ANS, specifically the sympathetic division, exerts direct control over the chromaffin cells , the hormone release can occur rather quickly. [ 2 ]

  5. Neuroendocrine cell - Wikipedia

    en.wikipedia.org/wiki/Neuroendocrine_cell

    An example of a neuroendocrine cell is a cell of the adrenal medulla (innermost part of the adrenal gland), which releases adrenaline to the blood. The adrenal medullary cells are controlled by the sympathetic division of the autonomic nervous system. These cells are modified postganglionic neurons. Autonomic nerve fibers lead directly to them ...

  6. Adrenal gland - Wikipedia

    en.wikipedia.org/wiki/Adrenal_gland

    The adrenal medulla is driven by the sympathetic nervous system via preganglionic fibers originating in the thoracic spinal cord, from vertebrae T5–T11. [20] Because it is innervated by preganglionic nerve fibers, the adrenal medulla can be considered as a specialized sympathetic ganglion. [20]

  7. Stress (biology) - Wikipedia

    en.wikipedia.org/wiki/Stress_(biology)

    The sympathoadrenal medullary (SAM) axis may activate the fight-or-flight response through the sympathetic nervous system, which dedicates energy to more relevant bodily systems to acute adaptation to stress, while the parasympathetic nervous system returns the body to homeostasis.

  8. With surgeon general’s warning, will the Chrissy Teigen ...

    www.aol.com/surgeon-general-warning-chrissy...

    Rihanna announced she's been sober for a year. Tom Holland launched a non-alcoholic beer company last year. And the “sober curious” movement, famously backed by Chrissy Teigen in late 2021 ...

  9. Ganglion cell - Wikipedia

    en.wikipedia.org/wiki/Ganglion_cell

    Cells that reside in the adrenal medulla, where they are involved in the sympathetic nervous system's release of epinephrine and norepinephrine into the blood stream; Cells of the sympathetic ganglia; Cells of the parasympathetic ganglia; Cells of the spiral ganglia [2]