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Brain cooling in humans--anatomical considerations

W Zenker1, S Kubik

  • 1Institute of Anatomy, University of Zurich, Switzerland.

Anatomy and Embryology
|January 1, 1996
PubMed
Summary

Vascular anatomy facilitates head and nasal cooling via the dura mater and cerebrospinal fluid (CSF). This mechanism may influence brain and spinal cord temperature regulation through blood flow convection.

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Area of Science:

  • Neuroscience
  • Anatomy
  • Physiology

Background:

  • The head and nasal passages possess vascular networks that connect to the dura mater.
  • The dura mater is highly vascularized and influences the cerebrospinal fluid (CSF) compartment.

Purpose of the Study:

  • To investigate the anatomical basis for convective cooling of the brain and spinal cord.
  • To explore the role of vascular arrangements in thermoregulation.

Main Methods:

  • Anatomical analysis of vascular connections between skin, mucous membranes, dura mater, and CSF.
  • Comparison of cranial arterial structures with animal retia mirabilia involved in selective brain cooling.

Main Results:

  • Vascular structures allow significant venous blood flow from the head and nasal regions to the dura mater, supporting convective cooling.
  • CSF temperature gradients can directly or indirectly affect brain parenchyma temperature.
  • Venous plexuses in the vertebral canal may facilitate spinal cord cooling via the CSF.

Conclusions:

  • The described vascular arrangements provide a basis for thermoregulation of the central nervous system.
  • Evaporative cooling from the head and nasal areas may influence brain and spinal cord temperatures via the CSF.

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