From Embryology

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Fig. 5. A section through the right lateral cusp in a 28-5 mm. embryo

( x 60) to show the effect of the invagination which has now occurred at the right A.-V. sulcus, A. V.S. Auricular muscle, A., joins that of the ventricle, V., ventral to the line of attachment of the cusp, so that its base is now composed of auricular muscle, A., and ventricular muscle, 17., with a core of connective tissue continuous with that of the sulcus. The cushion tissue, R.C., extends almost to the tip of the cusp.

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current15:01, 15 November 2015Thumbnail for version as of 15:01, 15 November 2015590 × 743 (128 KB)Z8600021 (talk | contribs)