Page 226 - Anatomy and Physiology of Farm Animals, 8th Edition

Anatomy of the Nervous System / 211

Parasympathetic Sympathetic
VetBooks.ir Eye III Cranial cervical ganglion
Eye
Lacrimal, mandibular,
and sublingual glands VII Brainstem Salivary glands
Parotid and mucosal IX Sweat and mucosal glands
glands X
Vertebral Blood vessels
nerve
Middle cervical ganglion
Larynx, esophagus, Heart
and trachea Cervical Bronchi and lungs

Recurrent laryngeal T1
nerve Cervicothoracic ganglion

Heart and
lungs
Thoracic

Sympathetic trunk
Spinal cord Thoracic (greater)

Abdominal splanchnic nerve
viscera Celiac ganglion
Cranial mesenteric
ganglion
Celiacomesenteric
plexus
Lumbar Aorticorenal ganglion

Gonadal ganglion
Caudal mesenteric
ganglion and plexus
S1
Pelvic ganglia Hypogastric nerve
(part of pelvic plexus (to pelvic plexus)
to pelvic viscera & colon

Figure 10-18. The autonomic nervous system. Left, the parasympathetic outflow (yellow) with cranial
nerves III, VII, IX, and X and sacral spinal cord segments carrying parasympathetic fibers. Right, the
sympathetic division (red). Thoracic and cranial lumbar segments make contributions to the sympathetic
trunk. These nerves are bilateral and are shown on one side only in this drawing for purposes of clarity.

Parasympathetic Nervous System the craniosacral division. Fibers of the
cranial portion are distributed via four cra-
The parasympathetic division of the auto- nial nerves: the oculomotor (III), facial
nomic nervous system arises from cranial (VII), glossopharyngeal (IX), and vagus (X)
nerves and sacral segments of the spinal nerves. The first three of these supply
cord; for this reason, it is sometimes called parasympathetic fibers to smooth muscle