Zustand: Sehr gut | Sprache: Englisch | Produktart: B�cher | INTRODUCTION IT appears to be a fixed law that the contraction of a muscle shall be toward its centre, therefore, the subject for mechanism on each occasion is so to modify the figure, and adjust the position of the muscle as to produce the motion required agreeably with this law. This can only be done by giving to different muscles a diversity of configuration suited to their several offices and to their situation with respect to the work which they have to perform. On which account we find them under a multiplicity of forms and altitudes sometimes with double, sometimes with treble tendons sometimes with none, sometimes with one tendon to several muscles at other tipies with one muscle to several tendons. The shape of the organ is susceptible of an incalculable variety, while the original property of the muscle. The law and line of its contraction remains the same and is simple. Herein the muscular system may be said to bear a perfect resemblance to our works of art. An artist does not alter the native quality of his materials or their laws of action. He takes these as he finds them. His skill and ingenuity are employed in turning them such as they are, to his account by giving to the parts of his machine a form and relation in ,which these unalterable properties may operate ,., The mouth was made to cut and grind food. To save this trouble and work, mechanical devices such as the mill- stone were put into operation. Hence the upper stone ground while the lower was stationary, In the human machine, the upper stone is fixed and the lower does the grinding. The only movable bone of the skull is the lower jaw which hinges to the head just in front of the ear. It acts as a lever of the third order. The cutting and grinding force is controlled by powerful muscles. The one that raises the lower jaw is named The temporal muscle attached to the coronoid portion of lower jaw it passes upward under the zygomatic arch covering the tern oral fossa. From its attachment above, its fibres converge before passing under the arch. The inferior maxillary or lower jaw bone is shaped somewhat like a horse-shoe. Its front projection forms the chin it then passes backward on either side of the mouth then bends upwards ending in a head or condyle that articulates with the temporal bone. The muscles of mastication are of marked prominence and are called masseters. They move the lower jaw and are inserted into the vertical branch of the lower jaw-bone the upper part or the superiot border arises from the zygomatic arch. By its contraction it brings the teeth together in cutting and grinding. Unlike the facial muscles or muscles of expression, the temporal and the masseter extend from the surface of one bone to that of another, that is, from the unmovable bones of the head to the movable lower jaw-bone. In the human species, the mouth not only is used for the grinding and breaking down of food, but also the tespiration of air and the utterance of sound.

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Detalles bibliogr�ficos

T�tulo

The Human Machine - The Anatomical Structure & Mechanism Of The Human Body

Editor

Holyoake Press

Fecha de publicaci�n

2008

Idioma

Ingl�s

ISBN 10

1443775487

ISBN 13

9781443775489

Encuadernaci�n

Encuadernaci�n de tapa blanda

Estado

Sehr gut

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B�cher

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Sinopsis

INTRODUCTION IT appears to be a fixed law that the contraction of a muscle shall be toward its centre, therefore, the subject for mechanism on each occasion is so to modify the figure, and adjust the position of the muscle as to produce the motion required agreeably with this law. This can only be done by giving to different muscles a diversity of configuration suited to their several offices and to their situation with respect to the work which they have to perform. On which account we find them under a multiplicity of forms and altitudes sometimes with double, sometimes with treble tendons sometimes with none, sometimes with one tendon to several muscles at other tipies with one muscle to several tendons. The shape of the organ is susceptible of an incalculable variety, while the original property of the muscle. The law and line of its contraction remains the same and is simple. Herein the muscular system may be said to bear a perfect resemblance to our works of art. An artist does not alter the native quality of his materials or their laws of action. He takes these as he finds them. His skill and ingenuity are employed in turning them such as they are, to his account by giving to the parts of his machine a form and relation in ,which these unalterable properties may operate ,., The mouth was made to cut and grind food. To save this trouble and work, mechanical devices such as the mill- stone were put into operation. Hence the upper stone ground while the lower was stationary, In the human machine, the upper stone is fixed and the lower does the grinding. The only movable bone of the skull is the lower jaw which hinges to the head just in front of the ear. It acts as a lever of the third order. The cutting and grinding force is controlled by powerful muscles. The one that raises the lower jaw is named The temporal muscle attached to the coronoid portion of lower jaw it passes upward under the zygomatic arch covering the tern oral fossa. From its attachment above, its fibres converge before passing under the arch. The inferior maxillary or lower jaw bone is shaped somewhat like a horse-shoe. Its front projection forms the chin it then passes backward on either side of the mouth then bends upwards ending in a head or condyle that articulates with the temporal bone. The muscles of mastication are of marked prominence and are called masseters. They move the lower jaw and are inserted into the vertical branch of the lower jaw-bone the upper part or the superiot border arises from the zygomatic arch. By its contraction it brings the teeth together in cutting and grinding. Unlike the facial muscles or muscles of expression, the temporal and the masseter extend from the surface of one bone to that of another, that is, from the unmovable bones of the head to the movable lower jaw-bone. In the human species, the mouth not only is used for the grinding and breaking down of food, but also the tespiration of air and the utterance of sound.

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Seit �ber 30 Jahren handeln wir mit B�chern. Begonnen hat alles als kleiner Fachbuchhandel in Berlin. Heute sind wir spezialisiert auf den An- und Verkauf gebrauchter B�cher. Noch immer liegt unser Fokus dabei auf den Kategorien: Fachbuch und englischsprachige Literatur. Hinzu kommen B�cher aus allen anderen Genres, wie Belletristik, Biografien oder Kinderb�cher. Unser oberstes Ziel ist dabei die Weiterverwendung von Dingen und die Schonung von Ressourcen. Neben dem Ankauf von privaten B�chern oder Haushaltsaufl�sungen kaufen wir bundesweit komplette Bibliotheken und Buchbest�nde von Institutionen auf, um diese nachhaltig ein weiteres Mal auf den Markt zu bringen. Parallel dazu bietet Buchpark die M�glichkeit, gro�e Mengen einzulagern. Ganze Bibliotheken und umfangreiche Buchbest�nde werden von uns professionell auf Qualit�tsmerkmale hin untersucht und sorgf�ltig f�r den Onlinehandel aufbereitet. Wir schenken B�chern ein zweites Leben.

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