5. The seventh pair (_facial_ nerves; control muscles that give the facial
expressions; efferent) connect with the muscles just beneath the skin of
the face.
6. The eighth pair (_auditory_ nerves; nerves of hearing; afferent)
connect with the internal ear.
7. The ninth pair (_glossopharyngeal_ nerves; nerves of taste to back of
tongue and of muscular control of pharynx; afferent and efferent) connect
with the back surface of the tongue and with the muscles of the pharynx.
8. The tenth pair (_vagus_, or pneumogastric, nerves; nerves of feeling
and of muscular control; afferent and efferent) connect with the heart,
larynx, lungs, and stomach. They have the widest distribution of any of
the cranial nerves.
9. The eleventh pair (_spinal accessory_ nerves; control muscles of neck;
efferent) connect with the muscles of the neck.
10. The twelfth pair (_hypoglossal_ nerves; control muscles of the tongue;
efferent) connect with the muscles of the tongue.
*Sympathetic Ganglia and Nerves.*--The sympathetic ganglia are found in
different parts of the body, and vary in size from those which are half an
inch in diameter to those that are smaller than the heads of pins. The
largest and most important ones are found in two chains which lie in
front, and a little to either side, of the spinal column, and extend from
the neck to the region of the pelvis (Figs.
Pages:
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397