How would a nerve carrying impulses from your brain to your eyelids be different to one carrying impulses to your heart?
The nerve carrying impulses from your brain to your eyelids would be a cranial nerve, such as the oculomotor nerve (responsible for eyelid movement), while the nerve carrying impulses to your heart would be part of the autonomic nervous system, such as the vagus nerve (regulating heart rate). Additionally, the nerve to the heart would primarily involve motor signals, while the nerve to the eyelids would involve sensory and motor signals for eyelid function.