
	3D Medical Animations Close This information is provided by an independent source. Merck & Co. does not endorse and is not responsible for the accuracy of the content, or for the practices or standards of non-Merck sources. This information provided is not intended to be a substitute for professional medical advice. A licensed healthcare professional should be consulted for diagnosis and treatment of any and all medical conditions. The manufacturer of a product generally has the most complete information about that product. How to use How to use The world's largest library of 3D medical animations developed and copyrighted by Blausen Medical Communications. The Human Atlas figures rotating model, labeled slides, and printable text in addition to animated videos. Shows a video of the selected health topic. Controls play, pause, and restart of the video. Shows a summary of the selected health topic. Controls to scroll the text. Shows a 3 D model of the video. Controls to rotate the model. Shows slides from the video. Controls to change slides.

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This information is provided by an independent source. Merck & Co., Inc. is not responsible for this content. Please discuss any and all treatment options with your healthcare professional. The manufacturer of a product generally has the most complete information about that product.

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vitamin K any of a group of substances, including vitamin K₁ (phytonadione) and vitamin K₂ (menaquinone), which promote blood clotting by increasing the synthesis of prothrombin by the liver. Deficiency of vitamin K delays clotting of the blood, with excessive bleeding and bruises under the skin. Food sources are alfalfa, spinach, cabbage, putrefied fish meal, and hempseed. Generally, the bacteria of the intestine produce vitamin K in adequate amounts, except in newborn infants, so that the deficiency is most often seen in babies.

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