Related Experiment Video
Updated: Jul 14, 2026
09:53
Whole-mount Immunohistochemical Analysis for Embryonic Limb Skin Vasculature: a Model System to Study Vascular Branching Morphogenesis in Embryo
Published on: May 20, 2011
[Control of cutaneous blood vessels]
J Damas1, N Garbacki, J F Liégeois
1Service de Physiologie humaine, Institut Léon Fredericq, Université de Liège.
Revue Medicale De Liege
|February 1, 2002
Summary
Sympathetic nerves control skin blood flow and sweating via distinct pathways. These nerves respond to temperature, blood pressure, and exercise, influencing skin
Area of Science:
- Neuroscience
- Physiology
Context:
- Sympathetic nervous system's role in thermoregulation and cardiovascular control.
- Cutaneous vascular and sudomotor innervations.
Purpose:
- To describe the diverse roles of sympathetic neurons in regulating skin functions.
- To elucidate the control mechanisms of cutaneous blood flow and sweating.
Summary:
- Three types of sympathetic neurons innervate the skin: cholinergic sudomotor neurons, adrenergic vasoconstrictor neurons, and cholinergic vasodilator neurons.
- Adrenergic neurons release noradrenaline and ATP to decrease blood flow, while cholinergic neurons release acetylcholine and a co-transmitter to increase blood flow.
- Nitric oxide (NO) synthesis in skin blood vessels is upregulated by increased body temperature and direct skin heating.
- Axon reflexes and inflammatory mediators are involved in the response to burns.
Impact:
- Provides a comprehensive overview of sympathetic skin neurobiology.
- Highlights the complex interplay of neural and thermal factors in skin physiology.
- Informs understanding of conditions like burns and thermoregulatory disorders.
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