Studies in Anatomy from the Anatomical Department of the University of Manchester Volume 1

Studies in Anatomy from the Anatomical Department of the University of Manchester Volume 1

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 edition. Excerpt: trapezius and rhomboid comes from xii. and xiii., N. to coraco-brachialis and subscapularis from xiii., N. to supra and infra-spinati from xiii., circumflex from xiii. and xiv., N. to upper heads of triceps and N. to dorsal part of latissimus dorsi from xiv., N. to iliac portion of latissimus dorsi from xv., and the musculo-spiral nerve from xiv. and xv. On considering the relationship between the position of origin of these nerves and their distribution, it must be stated that 1 Proc. Roy. Soc., vol. xl., 1886. ' Journ. Anal. and Phys., vol. xxi., p. 611. 5 Journ. Anat, and Phys., vol. xxi, p. 407.--_-------__---------fi they agree in a striking manner with the conclusions of Herringham and Paterson. The supply of the pectoralis major and pectoralis medius apparently breaks the rule that " of two muscles that which is nearer the surface tends to be supplied by the higher, that which is further from it, by the lower nerve," because the major which entirely covers the medius is supplied by xiii. and xiv., whereas the medius is supplied by xii. and xiii. But this is explicable when the original relationship of the two muscles is taken into consideration. The pect. medius of Watson is generally regarded as representing the subclavius muscle' which lies anterior to the pectoral, and as such would tend to be supplied by the higher nerve, but which having become largely developed in birds, and especially in the Spheniscidae, has extended its origin backwards on to the sternum beneath the pectoralis, thus giving the two muscles their present relationship, whilst their nerve supply has remained unchanged. Are nine in number. The first enters into the brachial plexus, ii. to viii. form the intercostal nerves, which lie in the...
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Product details

  • Paperback | 88 pages
  • 189 x 246 x 5mm | 172g
  • United States
  • English
  • black & white illustrations
  • 1236848144
  • 9781236848147