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Medical terminology Daily (MTD) is a blog sponsored by Clinical Anatomy Associates, Inc. as a service to the clinical community, clinical students, and also the clinical industry. Us will write-up a workweek day-to-day medical or surgical term, its an interpretation and usage, and biographical notes on anatomists, surgeons, and also researchers with the ages. It is in warned that few of the photos used depict human being anatomical specimens.

You are watching: In the term sphenoid, what does the suffix mean?

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A minute in History

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Antoine Louis (1723–1792)

French surgeon, anatomist, and also physiologist. Following his medical studies and a lengthy career as a physiologist, Antoine louis was named Permanent Secretary that the royal French Academy that Surgery. His other titles were those of Professor of the royal Academy, Consultant operated doctor of the armies of the King, member that the Royal culture of sciences of Montpellier, Inspector the the Royal armed forces Hospitals, and Doctor in law of the college of Paris. Together a member of these academies louis was critical in the design and also construction the the guillotine. Initially called the \"Louisette\", this device was later named after another French medical professional in the same committee, Dr. Joseph-Ignace Guillotin.

Antoine Louis\" surname is far better know to history as the eponymic origin of the \"sternal angle\" likewise know together the \"Angle of Louis\" and also synonymously (probably by misspelling or translation) the \"angle that Lewis\", and \"angle the Ludwig\". This anatomical landmark is extremely essential as that serves as a superficial landmark for necessary anatomical cases (click here).

As a suggest of controversy, there are some that contest the history of this eponym adjudicating it come Pierre Charles Alexander louis (1787-1872), one more French physician committed to the research of tuberculosis.

Sources:1. Srickland, N; Strickland A angle of Louis, much more Than Meets the Eye. MedTalks:2. Ramana, R. K., Sanagala, T. And also Lichtenberg, R. (2006), A brand-new Angle ~ above the angle of Louis. Congestive heart Failure, 12: 197–199 3. \"The beginning of medical Terms\" Skinner, HA; 1970

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This word has actually a Greek source <-sphen-> meaning \"wedge\", and the suffix <-oid> meaning \"similar to\" or \"resembling\". method \"resembling a wedge\" or \"wedge-like\".

The sphenoid bone (os sphenoidale) has actually been defined as butterfly or bat-shaped, and also is a complex bone positioned as a wedge or keystone in the base of the skull. Float over the image1 for a check out of the ar of this bone.

The sphenoid bone has a remarkable depression called the sella turcica, Latin because that \"turkish chair\" whereby the hypophysis or pituitary gland is found.

On that inferior facet the sphenoid bone presents with two thin wing-like plates dubbed the lateral and medial pterygoid key or lamina (see the area v the letter \"H\" in the accompanying image)

Images modified indigenous \"De Humanis Corporis Fabrica\" by Andreas Vesalius.


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UPDATED: The hatchet <cholangiogram> is composed by the combined root state <-chole-> obtained from the Greek indigenous <χολή> (cholí) meaning \"gall\" or \"bile, and also the root term <-angi->, likewise derived indigenous the Greek <αγγείο> (angeío), meaning \"vase\", or \"vessel\"letter. The suffix <-(o)gram> developed from the Greek indigenous <γράμμα> (grámma) , definition \"letter\", although today we use it to median \"examination of\". For much more information ~ above this suffix, click here. The hatchet <cholangiogram> therefore method \"examination that a bile vessel\". 

A cholangiogram is the fluoroscopic imaging the a bile duct. To do this a radio-opaque dye is presented in the bile system and a collection of X-ray photos are bring away of the hepatobiliary tree. This day the examination have the right to be carry out intraoperative in conjunction v a cholecystectomy making use of a C-arm fluoroscope

The accompanying video (without sound) mirrors an intraoperative normal cholangiogram.

Video courtesy the YouTube, Mr. Andrew Smith and the Yorkshire Gallstone Clinic.


This write-up is part of the collection \"A minute in History\" wherein we respect those that have added to the development of medical expertise in the locations of anatomy, medicine, surgery, and also medical research.To search all the short articles in this series, click here.

Raymond de Vieussens (c.1635 – 1715). French anatomist and also physician. His specific date and also place of birth room uncertain, some location him being born in the area the Le Vigan in France and also the date for part authors as late as 1641.

What we do know is that he studied at the college of Montpellier whereby he graduated from his clinical studies in 1670. He became a doctor at the Hôtel Dieu Saint-Eloi in Montpellier. That later became head physician at the exact same hospital and apparently preserved this place for the remainder of his life. His research studies on the anatomy of the heart and also lymphatic system were pioneers because that the time, as were his research studies on the anatomy of the nervous system.

Vieussens was a prolific writer. Amongst his functions in 1706, he released “Nouvelles Découvertes sur le Coeur” (New discoveries on the Heart) adhered to by “Traité Nouveau de la framework et Des reasons du Mouvement Naturel du Coeur” (New contract on the Structure and Cause of the natural Movement the the Heart) in 1715. In these books he presented comprehensive anatomy the the lymphatic system and blood ship of the heart, as well as his theory on the motion of the heart. In his work, the did the an initial accurate description of mitral stenosis and also aortic disease.

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One of his greatest works was “Neurographia Universalis”, published in 1684 in Lyons, France. In this publication Vieussens defines the structure of the nervous system with emphasis on the pathways that the white substance, i beg your pardon we know today is created by majority of neuronal axons. That accurately described the internal structure that the cerebellum and also other structures that now bear his name. Unfortunately Vieussens test to describe the physiology the the mind with little factual support, occurring wild theories, consisting of the statement the he had uncovered the “fluid that the nerves”.

Some that Vieussens’ work-related was published posthumously through his family and also colleagues. Today, plenty of eponyms psychic Vieussens’ name, below are several of them:

• Valve that Vieussens: A valve found at the distal finish of the an excellent cardiac vein, wherein it empties right into the coronary sinus • Ring that Vieussens: name for and anatomical variation in the heart, an anastomotic communication in between two conal arteries, one occurring from the appropriate coronary artery, the other occurring from the left anterior to decrease artery (LAD) • Centrum the Vieussens: A term that explains the massive of white matter at the center of every cerebral hemisphere • Ring of Vieussens: Eponymic term for the limbus fossa ovalis, a increased muscular ring surrounding the fossa ovalis in the love • Valve that Vieussens: A thin veil that tissue between the superior cerebellar peduncles, forming part of the roof of the fourth ventricle. This is known as the exceptional medullary vellum and also may have actually some sparse cerebellar tissue on the • The ventricle of Vieussens: The name of a cavity discovered in the situation where the septum pellucidum is double. The septum pellucidum is a membrane that separates the lateral ventricles that the brain in the midline

If you float with your mouse over the photo of young Vieussens you will see an additional image that Vieussens in ~ 65.