INTEGBI 131 Lecture Notes - Lecture 11: Peripheral Nervous System, Sensory Neuron, Wasabi

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Ganglia: clusters of (peripheral) neuronal cell bodies. Motor endings: axon terminals of motor neurons that innervate effectors (muscle fibers & glands) Somatic sensory: sensory innervation of outer tube (skin, trunk wall) & limbs. General sensory: throughout body- touch, pain, vibration, pressure, temp. ~~proprioceptive senses: ( body senses: position & movement in space / sense of body parts" locations in relation to each other ) detect stretch in tendons, joints, muscles. Special somatic senses: in small areas- hearing, equilibrium/balance, General senses: stretch, pain, temp, nausea, hunger (in urinary tract, dig organs, dig tracts, viscera) Special senses: taste/smell chemical receptors on tongue & nose. Somatic /voluntary motor (ns): motor innervation of skeletal muscles of outer. Visceral motor/involuntary (ans): inner tube (contraction of smooth & cardiac tube & limbs = contraction muscle; glandular secretion) & some outer/sweat glands & blood vessels. Exteroreceptors: on near surfaces & stimuli from outside body. Interoceptors: in dig tube, bladder, lungs & stimuli from internal.

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