**Question:** True regarding abdominal autonomic plexus are all except

A. The thoracic autonomic ganglia
B. The cervical sympathetic ganglia
C. The lumbar sympathetic ganglia
D. The sacral parasympathetic ganglia

**Core Concept:** The abdominal autonomic plexuses are a network of nerves that control various functions in the abdominal region, including gastrointestinal motility, blood flow, and secretions. They consist of both sympathetic and parasympathetic components.

**Why the Correct Answer is Right:** The abdominal autonomic plexuses are comprised of three main components: the sympathetic, parasympathetic, and enteric nervous systems. The correct answer, "The thoracic autonomic ganglia," is incorrect because it refers to a specific component of the sympathetic nervous system, which is not part of the abdominal plexus.

**Why Each Wrong Option is Incorrect:**

A. The thoracic autonomic ganglia (Option A) are a part of the sympathetic nervous system and not a component of the abdominal autonomic plexus.
B. The cervical sympathetic ganglia (Option B) are located in the neck and are associated with the sympathetic chain, not the abdominal region.
D. The sacral parasympathetic ganglia (Option D) are part of the parasympathetic nervous system, which is also not a component of the abdominal autonomic plexus.

**Clinical Pearl / High-Yield Fact:** The abdominal autonomic plexuses are crucial for maintaining homeostasis in the gastrointestinal tract, and understanding their anatomy and function is essential for interpreting medical imaging, diagnosing conditions like intestinal pseudo-obstruction or ectopic plexus syndromes, and formulating treatment plans for gastrointestinal disorders.

**Correct Answer:** D. The sacral parasympathetic ganglia are not part of the abdominal autonomic plexus.