Question

multiple choice question
what plexuses give rise to a number of nerves that control the muscles of the thighs, legs, and feet?

○ cervical plexuses

○ coccygeal plexuses

○ brachial plexuses

○ lumbosacral plexuses

Explanation:

• Cervical plexuses: Innervate neck, shoulder, and head muscles, not lower limbs. Eliminate.
• Coccygeal plexuses: Small, innervate coccyx and nearby, not thighs/legs/feet. Eliminate.
• Brachial plexuses: Innervate upper limbs (arms, hands), not lower. Eliminate.
• Lumbosacral plexuses: Formed by lumbar and sacral nerves, give rise to nerves (e.g., femoral, sciatic) controlling thigh, leg, foot muscles. Correct.

Answer:

D. lumbosacral plexuses