BIOL 235: CHAPTER 16 (VERRIFIED QUESTIONS AND ANSWERS)

BIOL 235: CHAPTER 16 (VERRIFIED QUESTIONS AND ANSWERS) sensation - CORRECT ANSWER-consicous or subconscious awareess of changes in external or interal environment perception - CORRECT ANSWER-consicous awareness and interprtation of sensations and is primarly a function of the cerebral cortex sensory modality - CORRECT ANSWER-each unique type of sensation (touch, pain, vision, hearing) general senses - CORRECT ANSWER-somatic and visceral senses somatic senses - CORRECT ANSWER-somat= of the body -tactile sensation (touch) -thermal sensations (warm, cold) -pain sensations -proprioceptive sensations (allow perception of static poions of limbs and body parts + movemtns of limbs and head) visceral senses - CORRECT ANSWER--info about conditions in internal organs ex:pressure, stretch, nausea, hunger, temp special senses - CORRECT ANSWER-sensory modalities of smell, taste, vision, heating, balance what are 4 steps in the process of sensation - CORRECT ANSWER--stimulation of sensory receptor -transduction of the stimulus -generation of nerve impulses -integration of sensory input describe stimulation of sensory receptor - CORRECT ANSWER-a stimulus in the sensory receptor's receptive field occurs describe transduction of the stimulus - CORRECT ANSWER-a sensory receptor transfuces/converts energy from stimulus into a graded potential. -each receptor can only transudce one kind of stimulus describe generation of nerve impulses - CORRECT ANSWER--when graded potential reaches threshold, it triggers nerve impulses, which propogate toward teh CNS describe integration of sensory input - CORRECT ANSWER-a particular region of the CNS receives and integrates the senory nerve impulses -consicous sensations/perceptions are integrated in cerebral cortex what are the factors to classify sensory receptors based on microscopic structure - CORRECT ANSWER-- free nerve endings -encapsulated nerve endings -seperate cells free nerve endings - CORRECT ANSWER-bare dendrites; no structural specifalizations -ex: receptors for pain, touch encapsulated nerve endings - CORRECT ANSWER-receptors for pressure, vibration -dendrites enclosed in connective tissue capsule with distinct structure separate cells - CORRECT ANSWER-sensory receprots for some special senses -hair cells, gustatory receptor cells in taste buds, photoreceptors generator potential - CORRECT ANSWER-when stimulated, dendrites of free nerve endings "encapsulated nerve endings" produce this potential