. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. materially in the circulation of the fluids, in oppositionto the laws of gravity. In the palm of the hand and sole ofthe foot, it is a powerful protection to the structures that enterinto the formation of these parts. In all parts of the system,the separate muscles are not only invested by fascia, but they 153. What is meant by the origin of a muscle ? The insertion ? Theswell ? What is the color of muscles ? With what is each muscular fibresupplied ? 154. What is said of fascia ? What is its app
. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. materially in the circulation of the fluids, in oppositionto the laws of gravity. In the palm of the hand and sole ofthe foot, it is a powerful protection to the structures that enterinto the formation of these parts. In all parts of the system,the separate muscles are not only invested by fascia, but they 153. What is meant by the origin of a muscle ? The insertion ? Theswell ? What is the color of muscles ? With what is each muscular fibresupplied ? 154. What is said of fascia ? What is its appearance whenfreshly exposed ? 155. What effect has it on the muscles ? Give otheruses of the fascia. ANATOMY OF THE MUSCLES. 67 are arranged in layers, one over another. The sheath of eachmuscle is loosely connected with another, by the cellularmembrane. 156. The interstices between the different muscles arefilled with adipose matter, or fat. This is sometimes calledthe packing of the system. To the presence of this tissue,youth are indebted for the roundness and beauty of theirlimbs. Fig. Fig. 37. A tiansverse section of the neck. The separate muscles, as they arearranged in layers, with their investing fasciae, are beautifully represented. Asthe system is symmetrical, figures are placed only on one side. In the trunk themuscles are arranged in layers, surrounded by fasciae, as in the neck. The sameis true of the muscles of the upper and lower limbs. 12, The trachea, (windpipe.) 13, The oesophagus, (gullet.) 14, The carotid artery andjugular vein. 28, One of the bones of the spinal column. The figures that are placedin the white spaces represent some of the fascia?; the other figures indicate muscles. 157. The muscles may be arranged, in conformity with thegeneral division of the body, into four parts: 1st. Those ofthe Head and Neck. 2d. Those of the Trunk. 3d. Thoseof the Upper Extremities. 4th. Those of the Lower Ex-tremities. 156. Give a reason why the limbs of youth a
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