Class-book of physiology : for the use of schools and families : comprising the structure and functions of the organs of man, illustrated by comparative reference to those of inferior animals . Yellow fibrous element, showing its branching fibrils. C, Finer fibrils of the yellow element. 34. Fibres are larger than fibrils, but are similar in otherrespects. 85. A tissue is the union or interlacement of one ormore of these primary structures. 36. An organ is an instrument composed of tissues, anddesigned for action. Its action is called its function oruse. Thus, the liver is an organ, and the se
Class-book of physiology : for the use of schools and families : comprising the structure and functions of the organs of man, illustrated by comparative reference to those of inferior animals . Yellow fibrous element, showing its branching fibrils. C, Finer fibrils of the yellow element. 34. Fibres are larger than fibrils, but are similar in otherrespects. 85. A tissue is the union or interlacement of one ormore of these primary structures. 36. An organ is an instrument composed of tissues, anddesigned for action. Its action is called its function oruse. Thus, the liver is an organ, and the secretion of bileits function. 87. An apparatus consists of a number of differentorgans, arranged for the performance of some one teeth, mouth, stomach, intestines, &c, belong to thedigestive apparatus. 38. A system is a connected series of similar parts, suchas the muscular or the nervous system. 39. The number of tissues which make up the differentorgans of animals is variously stated, according to theminuteness of description which different anatomists adopt. What are fibres? What is a tissue?—an organ? What is an apparatus?—a system? 2* 22 CLASS-BOOK OF Fig. 40. The cellular or areolartissue (fig. 3) is regarded asthe primary form of all theothers. It is formed by thecrossing or interlacing of mi-nute fibres, interwoven in eve-ry direction, so as to form aweb-like membrane with innu-merable small spaces, whichI ) communicate with each other,:) as is shown by filling themwith air or water. When thelung and cellular tissue arepierced, as sometimes happens,,. , in fractures of the ribs, the -A magnified representation of a portion ix *xc*vu >»*.«*» , of areolar tissue. external air passes from the lung into this tissue, and continues inflating it till thewhole body becomes enormously distended with air, caus-ing suffocation and death. In the progress of disease, thewatery portions of the blood are sometimes effused intothis membrane, causing
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectphysiologicalprocess
