ES 207 Chapter Notes - Chapter 8: White Matter, Defecation, Lumbar Vertebrae
22 Dec 2016
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Vision, hearing, taste, smell, touch, pain, temp, body position. Brain + spinal cord are major organs for processing sensory input. Input can have an immediate response, stored in memory, or ignored. Skeletal muscle contract when stimulated by nervous system. Controls cardiac muscle, smooth muscle, and many glands. Depends on nervous systems ability to detect, interpret, and respond to changes. In response it can stimulate or inhibit activities of other systems to help maintain homeostasis. Brain is center of mental activity (consciousness, memory, thinking) Peripheral nervous system: all nervous tissue outside the cns (nerves + ganglia) Two functional subdivisions of pns: sensory (afferent) and motor (efferent) Afferent: conducts action potentials from sensory receptors to the cns (sensory neurons) Efferent: conducts action potential from the cns to effector organs such as muscles and glands (motor neurons) Motor division - subdivisions: somatic nervous system and autonomic nervous system. Somatic nervous system: transmits action potentials from the cns to skeletal muscle.
