Beginner Subcostal Nerve Quiz

Q1. The subcostal nerve is the anterior ramus of which spinal nerve?

• T12
• T11
• T10
• L1

Q2. Why is the T12 anterior ramus called the subcostal nerve rather than an intercostal nerve?

• It travels within the vertebral canal
• It travels superior to the first rib
• It travels inferior to the twelfth rib
• It travels through the sternum

Q3. The subcostal nerve passes inferior to which rib?

• Tenth rib
• Twelfth rib
• Sixth rib
• First rib

Q4. The subcostal nerve is best classified as which type of nerve?

• Pure parasympathetic nerve
• Pure sensory nerve
• Mixed nerve
• Pure motor nerve

Q5. Which region receives important motor innervation from the subcostal nerve?

• Muscles of mastication
• Anterolateral abdominal wall
• Posterior compartment of the leg
• Intrinsic muscles of the hand

Q6. Which type of innervation does the subcostal nerve provide to the skin?

• Somatic sensory innervation
• Parasympathetic motor innervation
• Branchial motor innervation
• Special sensory innervation

Q7. Which nerve lies immediately superior to the subcostal nerve in the thoracic segmental sequence?

• Vagus nerve
• Eleventh intercostal nerve
• First lumbar nerve
• Phrenic nerve

Q8. The subcostal nerve continues from the thoracic region primarily into which region?

• Neck
• Upper limb
• Cranial cavity
• Abdominal wall

Q9. Which spinal nerve level is associated with the lowest thoracic anterior ramus?

• T6
• T12
• L2
• T1

Q10. Which statement best describes the subcostal nerve?

• A branch of the phrenic nerve
• A branch of the vagus nerve
• The T12 anterior ramus that passes below the twelfth rib
• The T1 anterior ramus that enters the brachial plexus