Cheap College Textbooks

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899. Excerpt: ... PART II. DISEASES OF THE SPINAL NERVES. The nerves of the spinal cord, which are called spinal or peripheral nerves, arise, as is well known, by an anterior smaller, and a posterior larger root. These are flat bundles of fibres, loosely surrounded by the arachnoid, which pass into the intervertebral foramina, where the posterior roots form a swelling, the ganglion intervertebrale, and emerge from the spinal canal, the two roots having united to form a common round trunk. This again divides after its exit from the canal into two branches, an anterior and a posterior. The anterior, usually the larger, forms numerous anastomoses with the branches above and below it, the so-called ansa;, which are collectively called plexuses. The posterior, smaller nerves, pass backward between the transverse processes of the vertebras, and are distributed to the muscles and the skin of the back. Of the thirty-one pairs of spinal nerves, there are eight cervical, twelve dorsal, five lumbar, five sacral, and one coccygeal. The posterior as well as the anterior branches contain fibres from both roots. The anterior roots are motor (Charles Bell, 1811). They supply, besides all the muscles of the trunk and extremities, the unstriped muscles of the internal organs and the unstriped muscles of the vessels. The posterior roots are sensory, but we should keep in mind that the anterior most probably contain, besides the motor, also trophic and secretory, and the posterior roots, besides the sensory, also fibres for the reflexes (cf. also Sass, Deutsche Med.-Ztg., 1890, 12). The peripheral nerves, just as the cranial, may be affected independently or secondarily, and as the result of some primary disease in other parts. In cases of the first class overstrain plays an important rdle, o...

Cheap Textbooks

• Clinical Supervisor Training: An Interactive CD-Rom Training Program for the Helping Professions
• Guillain-Barre Syndrome - A Medical Dictionary, Bibliography, and Annotated Research Guide to Internet References
• Noses (Spot the Difference)
• Software Engineering with C++ and CASE Tools (Book & CD)
• Adaina Periarga
• Food Chains: Ocean Hardback
• OCR 'AS' Student Handbook: Human Health and Disease Module B
• Digital Timing Macromodeling for VLSI Design Verification (The Springer International Series in Engineering and Computer Science)
• Design of Experiments
• Commidendrum Rotundifolium