Pelvic Portion of the Sympathetic System
(Pars Pelvina S. Sympathici)
The pelvic portion of each sympathetic trunk is situated in front of the sacrum, medial to the anterior sacral foramina. It consists of four or five small sacral ganglia, connected together by interganglionic cords, and continuous above with the abdominal portion. Below, the two pelvic sympathetic trunks converge, and end on the front of the coccyx in a small ganglion, the ganglion impar. |
| Gray rami communicantes pass from the ganglia to the sacral and coccygeal nerves. No white rami communicantes are given to this part of the gangliated cord, but the visceral branches which arise from the third and fourth, and sometimes from the second, sacral, and run directly to the pelvic plexuses, are regarded as white rami communicantes. |
| The branches of distribution communicate on the front of the sacrum with the corresponding branches from the opposite side; some, from the first two ganglia, pass to join the pelvic plexus, and others form a plexus, which accompanies the middle sacral artery and sends filaments to the glomus coccygeum (coccygeal body). |
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Gray's Anatomy 1. Embriology 2. Osteology  Vertebral Column
 Skull
Exterior Skull Interior Skull  Cranial Bones
 Facial Bones
 Extremities
Upper Extremity Bones Hand Lower Extremity Bones Foot 3. Arthrology  Trunk Articulations
Vertebral Column Articulations  Upper Extremity Articulations
 Pelvis Articulations
 Lower Extremity Articulations
4. Myology  Muscles of the Head
Muscles of the Anterolateral Region of the Neck  Muscles of the Trunk
 Muscles of the Upper Extremity
 Muscles of the Lower Extremity
Muscles and Fascia of the Thigh Muscles and Fascia of the Leg 5. Angiology  Thoracic Cavity
6. The Arteries  Arteries of the Head and Neck
a) Common Carotid Artery  Arteries of the Upper Extremity
Axilla  Arteries of the Trunk
Descending Aorta Common Iliac Arteries  Arteries of the Lower Extremity
7. The Veins  Systemic Veins
Veins of the Head and Neck 8. The Lymphatic System 9. Neurology  Brain or Encephalon
 Cranial Nerves
 Spinal Nerves
 Sympathetic Nerves
10. The Organs of the Senses and the Common Integument  The Peripheral Organs of the Special Senses
11. Splanchnology  The Respiratory Apparatus
 The Digestive Apparatus
 The Urogenital Apparatus
a. Development of the Urinary and Generative Organs b. The Urinary Organs c. The Male Genital Organs d. The Female Genital Organs  The Ductless Glands
12. Surface Anatomy and Surface Markings  Muscle Tables
Quizzes  1. Introduction
 2. Head & Face
 3. Neck
 4. Torso
 5. Shoulder & Arm
 6. Forearm, Wrist & Hand
 7. Hip, Thigh & Knee
 8. Leg, Ankle & Foot
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