system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 54-year-old woman is found unconscious in her car. She is admitted to the hospital, and during physical examination she has absent biceps brachii reflex. What is the spinal level of the afferent component of this reflex?
assistant
The correct answer is  The biceps brachii reflex involves C5 and C6 spinal nerves. C5 provides the motor component; C6 the afferent side of the reflex arc.