Atlas of Anatomy

17 Nerves

Autonomic Plexuses

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Fig. 17.1   Autonomic plexuses in the abdomen and pelvis
Anterior view of the male abdomen. Removed: Peritoneum and majority of the stomach

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Innervation of the Abdominal Organs

Fig. 17.2   Innervation of the anterior abdominal organs
Anterior view. Removed: Lesser omentum, ascending colon, and parts of the transverse colon. Opened: Lesser sac. The anterior and posterior vagal trunks each produce a celiac, hepatic, and pyloric branch, and a gastric plexus. See p. 245 for schematic.

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Fig. 17.3   Innervation of the urinary organs
Anterior view of the male abdomen and pelvis. Removed: Abdominal organs and peritoneum. See p. 246 for schematic.

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Innervation of the Intestines

Fig. 17.4   Innervation of the small intestine
Anterior view. Partially removed: Stomach, pancreas, and transverse colon (distal part). See p. 245 for schematic.

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Fig. 17.5   Innervation of the large intestine
Anterior view. Removed: Jejunum and ileum. Reflected: Transverse and sigmoid colons. See p. 245 for schematic.

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Innervation of the Pelvis

Fig. 17.6   Innervation of the female pelvis
Right pelvis, left lateral view. Reflected: Uterus and rectum. See p. 247 for schematic.

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Fig. 17.7   Innervation of the male pelvis
Right pelvis, left lateral view. See p. 247 for schematic.

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Autonomic Innervation: Overview

Fig. 17.8   Sympathetic and parasympathetic nervous systems in the abdomen and pelvis

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Fig. 17.9   Autonomic innervation of the intraperitoneal organs

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Autonomic Innervation: Urinary & Genital Organs

Fig. 17.10   Autonomic innervation of the urinary organs

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image Clinical

Referred pain from the internal organs

The convergence of somatic and visceral afferent fibers to a common level of the spinal cord confuses the relationship between the perceived and actual sites of pain, a phenomenon known as referred pain. Pain impulses from a particular organ are consistently projected to the same well-defined skin area.

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Fig. 17.11   Autonomic innervation of the genitalia

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