The anatomy and physiology of the nervous system. Vol.I. / [Valentine Flood].

  • Flood, Valentine.
Date:
1828
Catalogue details

Licence: Public Domain Mark

Credit: The anatomy and physiology of the nervous system. Vol.I. / [Valentine Flood]. Source: Wellcome Collection.

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    # them, and often distend the Arachnoid through its whole length into a capacious tube, owing to the ex- pansion of the sheaths that it sends round the nerves. Each of these serous sheaths is conical in its form, and having reached the Dura Mater is con- tinuous with its Arachnoid lining; the best way of seeing this continuity or reflection of the Arachnoid is to cut across the fibrous sheath close and external to the Dura Mater, you will then see the disposition of the Arachnoid on the inside. Besides these the Arachnoid forms similar sheaths'for the vessels, the ligamentum dentatum, and its processes; interiorly the Arachnoid forms sheaths for the terminating fasciculi of the Spinal Marrow, which are reflected as above described ; the Arachnoid in this manner forms a cul de sac, which prevents the serous effusions frequently found there from infiltrating into the cellular tissue. We may slit up this Membrane now, having first made a small opening into it, and detached it by the blow pipe. You thus bring into view the pos-