Final answer:
The liability of Martin, the conscientious doctor, in a medical malpractice case depends on the legal concept of vicarious liability.
Step-by-step explanation:
In this scenario, the liability of Martin, the conscientious doctor, depends on the legal concept of vicarious liability. Vicarious liability holds a person responsible for the actions of another person, based on their relationship or association. In this case, Martin and Henderson were partners in a medical practice. If the jury found in favor of the plaintiff due to Henderson's malpractice, Martin could potentially be held liable for his partner's actions, even if he did not directly contribute to the malpractice. However, the specific details would depend on the laws of the jurisdiction where the case is being heard.