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BMS 301 (47)
Lecture

Functions of nervous system, cranial nerves, spinal nerves

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Department
Biomedical Science
Course
BMS 301
Professor
Mark Frasier
Semester
Fall

Description
27 August Functions of nervous system Transmit information from internal and external environments to the central nervous system CNS (central nervous system) analyzes and interprets information; initiates and regulates appropriate response Neuron – structural unit of nervous system Damage periphery – can grow back Reflex arc – at least 2 neurons. Receptor, afferent neuron, efferent neuron, target organ. Functional (physiological) unit of nervous system Interneuron makes connections to cerebral cortex, different parts of nervous system Central N.S. → Brain, spinal cord Peripheral N.S. → Cranial nerves (from brain), spinal nn (from spinal cord) Both kinds of nn have somatic function (sensory information from skin, motor information to skeletal muscle). Body wall and limbs. Afferent and efferent nerves. E.g. muscles of expression, chewing, tongue, other skeletal muscles Conscious awareness, consciously controlling Both kinds of nn have autonomic function Smooth muscle, glandular tissue, cardiac muscle Afferent and efferent nn Less localized sensation than somatic
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