64 ЧМН

PNS (Peripheral Nervous System) includes nerves, ganglia, and nerve endings. There are 3 types of nerves: sensory (transmit signals from receptors to CNS), motor (transmit signals from CNS to effectors), and mixed (both types). Effectors include muscles (motor), glands (secretory), and blood vessels (trophic). Cranial nerves (12 pairs) and spinal nerves (31 pairs) are classified. Key details: olfactory (smell), optic (vision), oculomotor (eye muscles), trochlear (superior oblique), trigeminal (mixed, face), abducens (lateral rectus), facial (mixed, facial muscles), vestibulocochlear (hearing/balance), glossopharyngeal (mixed, throat), vagus (longest, mixed, thoracic/abdominal organs). Each nerve has specific nuclei, exit points, and functions.