Peripheral Nervous System: Neurotransmitters and Receptors The Peripheral Nervous System Efferent nervous system Somatic nervous system (non-autonomic,voluntary) Skeletal muscle Autonomic nervous system Heart.blood vessels. (vegetative,visceral,involuntary glands,other visceral enteric nervous system) organs,smooth muscle Somatic and visceral afferent nerves Anatomic classification:sympathetic(fight or flight) parasympathetic(rest and digest) Neurotransmitter-based classification:adrenergic,cholinergic,dopaminergic 11 Neurotransmitters and Receptors Peripheral Nervous System: Efferent nervous system Somatic nervous system (non-autonomic, voluntary) Skeletal muscle Autonomic nervous system (vegetative, visceral, involuntary; enteric nervous system) Heart, blood vessels, glands, other visceral organs, smooth muscle The Peripheral Nervous System Somatic and visceral afferent nerves Anatomic classification: sympathetic (fight or flight) parasympathetic (rest and digest) Neurotransmitter-based classification: adrenergic, cholinergic, dopaminergic