3D Medical Animations
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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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Resource Library

Dorland's Medical Dictionary for Healthcare Consumers allows you to look up definitions for medical terms. Terms are listed as they would appear in a printed dictionary. Click the first letter of the term you are looking for. Previous and Next links are available for you to proceed to the next group of terms in that sequence. Scroll down the listing within that range to find the definition you are seeking. Click on the term to display its definition.

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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 health care professional. The manufacturer of a product generally has the most complete information about that product.

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pectus (pek´tәs)   thorax.
 

pectus carinatum  a malformation of the chest wall in which the sternum is abnormally prominent; in severe cases, the deformity may interfere with lung and heart action, causing dyspnea on exercise and increased susceptibility to respiratory infections. Called also pigeon breast or chest and chicken breast.

pectus excavatum  a congenital malformation of the chest wall characterized by a funnel-shaped depression with its apex over the lower end of the sternum; it is caused by shortening of the central portion of the diaphragm, which pulls the sternum inwards when the person inhales. Persons with this condition often have difficulty doing sustained exercise, recovering from coughs and colds, and eating a full meal (so that they may be underweight). Many have heart murmurs and breathe noisily during sleep. Called also funnel breast or chest and koilosternia.





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