The Divisions of the Nervous System (Ch12 HW)

Welcome to Chapter 12! In this lecture, we begin our study of the nervous system by exploring its major functions and organizational structure. Topics Covered Functions of the Nervous System Maintaining homeostasis Sensory input Information processing (integration) Motor output Memory and learning Consciousness and emotions Major Divisions of the Nervous System Central Nervous System (CNS) Brain Spinal cord Peripheral Nervous System (PNS) Cranial nerves Spinal nerves Sensory and Motor Pathways Sensory (afferent) division Sensory receptors Motor (efferent) division Effectors Motor Divisions Somatic nervous system Voluntary control Skeletal muscle Autonomic nervous system Involuntary control Smooth muscle Cardiac muscle Glands Autonomic Nervous System Sympathetic nervous system Fight-or-flight responses Parasympathetic nervous system Rest-and-digest functions Enteric nervous system Digestive tract regulation By the end of this lecture, you'll be able to describe the major functions of the nervous system and trace information flow through the central, peripheral, sensory, motor, somatic, and autonomic divisions.