Beginner Least Splanchnic Nerve Quiz

Q1. From which thoracic sympathetic level does the least splanchnic nerve most commonly arise?

• T1
• T12
• T5
• L4

Q2. What type of autonomic efferent fibers predominate in the least splanchnic nerve?

• Postganglionic parasympathetic fibers
• Somatic motor fibers
• Preganglionic sympathetic fibers
• Preganglionic parasympathetic fibers

Q3. From which structure does the least splanchnic nerve arise?

• Vagus nerve
• Thoracic sympathetic trunk
• Lumbar plexus
• Phrenic nerve

Q4. Which region is a major destination of the least splanchnic nerve?

• Inguinal canal
• Renal and aorticorenal region
• Brachial plexus
• Cervical sympathetic region

Q5. Which prevertebral ganglia may receive fibers from the least splanchnic nerve?

• Ciliary ganglia
• Aorticorenal ganglia
• Geniculate ganglia
• Otic ganglia

Q6. Which organ is particularly associated with autonomic pathways receiving contributions from the least splanchnic nerve?

• Parotid gland
• Deltoid muscle
• Eye
• Kidney

Q7. Do preganglionic sympathetic fibers of the least splanchnic nerve normally have to synapse in the thoracic sympathetic trunk first?

• No, because they never enter the sympathetic trunk
• No, they can pass through the sympathetic trunk without synapsing
• Yes, all must synapse in the thoracic trunk
• Yes, they become parasympathetic there

Q8. Which nerve is usually immediately superior to the least splanchnic nerve among the named thoracic splanchnic nerves?

• Phrenic nerve
• Pelvic splanchnic nerve
• Vagus nerve
• Lesser splanchnic nerve

Q9. Which type of sensory information may accompany the least splanchnic sympathetic pathway?

• Auditory information
• Somatic motor commands to skeletal muscle
• Visceral afferent information
• Visual information

Q10. Which statement about the least splanchnic nerve is anatomically important?

• It is always the largest thoracic splanchnic nerve
• It is always bilateral and identical
• It is a branch of the vagus nerve
• It may be variable or absent