Abstract
IT is generally considered that erection of the penis is produced by a combination of raised arterial pressure, restricted venous return, and relaxation of the walls of the cavernous spaces. In the bull and the ram, the process is extremely rapid, both in erection and relaxation, suggesting that a more positive mechanism exists.
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References
Henderson, V. E., and Roepke, M. H., Amer. J. Physiol., 106, 441 (1933).
Deysach, L. J., Amer. J. Anat., 64, 111 (1939).
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WATSON, J. Mechanism of Erection and Ejaculation in the Bull and Ram. Nature 204, 95–96 (1964). https://doi.org/10.1038/204095a0
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DOI: https://doi.org/10.1038/204095a0
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