Cns vs Pns

Afferent neurons (sensory neurons)

Autonomic nerve involuntary action

Central Nervous System (brain and spinal cord)

Efferent neurons motor neurons

Fullness in stomach blood pressure blood pH

Motor neurons

Nervous System

Parasympathetic nerves

Peripheral Nervous System

Pupil constriction Decreases heart rate Tenses urinary bladder Causes erection

Pupil dilation Increases heart rate Relaxes urinary bladder Causes ejaculation

Sensory Visceral

Sensory Visceral information information

Skeletal muscles

Somatic (skin)

Somatic nerve (voluntary action)

Special senses (Vision, hearing, taste, smell, balance)

Symathetic nerves