Electro-physiology and electro-therapeutics : showing the best methods for the medical uses of electricity / By Alfred C. Garratt.
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upper arm, and connects with the first external intercosto- humeral nerve. (See p. 477, and Appendix G.) The median nerve arises also from the axillary or brachial plex- us, and descends along the upper arm by the side of the brachial artery, to the inner bend of the elbow, where it passes between the two heads of the pronator radii teres and flexor sublimis digitorum muscles. It then runs down the very middle of the palmar face of the forearm, between the flexor sublimis and profundus muscles, and also beneath the annular ligament, then into the palm of the hand, and so on to the palmar sur- face of the fingers. Thus the terminal twigs of the median nerve supply the important "exquisite sense of touch" to the pulp of the hand and fingers. It also supplies the periosteum about the elbow joint, and at the wrist it throws a branch around on to the posterior aspect of the wrist, where it joins a ganglion of nerves that there give off numerous small branches for the supply of this joint. There is also a super- ficial palmar branch that arises from Eig. 73. A Tiew of the NerT68> the median at about the lower fourth Arteries, and Veins at the bend «.-,#. ., . of the Elbow, on the front of the oi the torearm, that crosses over the Eight a™. 1. Lower Fart of Cephalic Vein. 2. Upper Part of Cephalic Vein. 3. Anterior Basilic Vein. 4. Posterior Basilic Vein. 5. The Trunk formed by their union. 6. Basilic Vein piercing the deep Fascia at 7. 8. The Median Vein. 9. A communicating Branch between the deep Veins of the Forearm and the upper part of the Median Vein. 10. The Median Cephalic Vein. 11. The Median Basilic Vein. These re- gions can be seen. 38* 12. Shows the point where the Three Branches of the Internal Cutaneous Nerve pass over or in front of the Median Basilic Vein. 13. Shows the divergence of these Three Branches, under which is the Ten- don, of the Biceps, and under that lies the Brachial Artery. 14. The External Cutaneous Nerve com- ing out of the deep Fascia. 15. The Internal Cutaneous Nerve. 16. The Musculo-Cutaneous Nerve. 17. The Spiral Cutaneous Nerve, a Branch of the Musculo-Spiral.