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Cohn EJ. Studies in the physiology of spermatozoa. (1918) Biol. Bull. 34: 167-218.

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This 1919 paper by Cohn describes spermatozoa in different species. Modern Notes: spermatozoa

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Studies in the Physiology of Spermatozoa

Edwin J. Cohn

(1919)

I. Introduction

The changes in the physiological condition of the spermatozoon, from the time it is extruded from the genitalia of the male until it "undergoes the transformation into a nucleus" (Loeb, J., I9I3, p. 306) in the protoplasm of the egg are dependent in rate upon environmental conditions. The germ cells of most marine invertebrates are extruded into sea water, and fertiliza- tion of the egg by the sperm there follows.' The environment, sea water-or sea water modified by the excretions of the egg or of the sperm-must therefore be studied in order to understand the variations in the physiological condition of spermatozoa that have often been observed.

Cite this page: Hill, M.A. (2024, June 15) Embryology Paper - Studies in the physiology of spermatozoa. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Paper_-_Studies_in_the_physiology_of_spermatozoa

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 | [[file:Mark_Hill.jpg|90px|left]] This 1919 paper by Cohn describes spermatozoa in different species.
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-See also: [[Historic Embryology Textbooks]]
+'''Modern Notes:''' {{spermatozoa}}
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 =Studies in the Physiology of Spermatozoa=
+Edwin J. Cohn
+(1919)
+==I. Introduction==
+The changes in the physiological condition of the spermatozoon, from the time it is extruded from the genitalia of the male until it "undergoes the transformation into a nucleus" (Loeb, J., I9I3, p. 306) in the protoplasm of the egg are dependent in rate upon environmental conditions. The germ cells of most marine invertebrates are extruded into sea water, and fertiliza- tion of the egg by the sperm there follows.' The environment, sea water-or sea water modified by the excretions of the egg or of the sperm-must therefore be studied in order to understand the variations in the physiological condition of spermatozoa that have often been observed.

Paper - Studies in the physiology of spermatozoa: Difference between revisions

Revision as of 23:11, 2 May 2019

Studies in the Physiology of Spermatozoa

I. Introduction