Term
| What are spensory receptors |
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Definition
| specialized cell that detect various timuli and produce a receptor potential |
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Term
| What are the 5 senses and the pseudo 6th sense |
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Definition
| Smell, taste, audition, touch, vision; 6th-balance |
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Term
| What is the function of interceptors |
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Definition
| receptors recognized internal info in the body (internal organs) |
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Term
| What is the function of proprioceptors |
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Definition
| The knowledge of one's body position (movement of the body) |
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Term
| What is the function of exteroceptors |
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Definition
| recognizing external info (environment; auditory info) |
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Term
| What are the chemoreceptors |
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Definition
| smell & taste recognizing chemical changes or composition in the air on on the tongue |
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Term
| What and where are the 4 different types of tongue receptors |
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Definition
| Sweet(tip of tongue), Salt(side), Sour(back side), bitter (back |
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Term
| Discuss the tongue receptors starting with olfactory receptors |
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Definition
| Olfactory receptors are sensitive to chemical composition in the air; the cilia will be detecting the composition; and the mucuous layer will change in the chemical composition in the air. |
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Term
| Why is the classification of the olfactory receptors very difficult |
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Definition
| Diffficult to understand how it works because it is partially conscious |
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Term
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Definition
| receptors sensitive to light; results in reception potential; action potential that will be tranmitted to the brain thru the optic nerve |
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Term
| What are the 3 different layers of cells in the retina and their function |
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Definition
| photoreceptors: cones (sensitive to color), rods (not sensitive); bipolar cells; ganglion cells-action potential in ganglion cells |
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Term
| What are thermoreceptors and descibe their recepotrs |
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Definition
| 2 recepotrs:hot/cold (end-buld or Krause); least sensitive to pain:elbow - most sensitive pulp of teeth |
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Term
| What are Mechanoreceptors |
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Definition
| Physical deformation: auditon, tactile |
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Term
| Describe Mechanoreceptors |
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Definition
| Tactile or touch; certain potential will change the action potential and transmit this info to the brain; recognized the deformation of the mechanical membrane; potential action: pressure of the skin then changes in the membrane will be observed |
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Term
| Describe the Auditory portion of the mechanoreceptors |
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Definition
| The sound waves transmit to the ear drum (tympanic membrane) which then the sound waves vibrate the eardurm, change to nerve impulses and are carried & transmitted to the cochlea to the ossicles which go to the auditory nerve |
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Term
| Describe a Recepive Field |
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Definition
| A receptor innervates and stimulates at the pt, but if another pt is innervates there is not stimulation. A specific field where it is stimulated at a certain point |
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Term
| Some of the photoreceptors in the receptive field send info to the |
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Definition
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Term
| The receptive field can be ? and a particular receptor can act as ? or ? |
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Definition
| overlapped; excitatory; inhibitory |
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Term
| Rods of stimulation - an increase rate of firing is ? a decrease rate of firing is ? |
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Definition
| an increse rate (inhibitory) a decreased rate (excitatory) |
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Term
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Definition
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Term
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Definition
| cutaneous; kinesthesia; organic senses; ruffini corpuscle vibration; pacinian, Meissner's copuscle; Merkel's disk; Free nerve ending |
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Term
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Definition
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Term
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Definition
| body position (propioception) and movements (joints, tendons,muscles) |
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Term
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Definition
| receptors in and around the internal organs (stomach ache) |
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Term
| Ruffini corpuscle vibration |
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Definition
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Term
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Definition
| Mechanical stimuli (vibrations) |
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Term
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Definition
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Term
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Definition
| touch at the base of the epidermis |
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Term
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Definition
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Term
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Definition
| Free nerve ending; Pacinian corpuscle; meissner's corpuscle, end-buld of Krause; Ruffini's end organ |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Serves a functional role for survival; denotes tissue destruction induced by thermal stimuli (fire) or mechanical force, degree of localization (where the pain is); Motivational force: info sending to the brain-motion response to it- escape source |
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Term
| Pain receptors are found in |
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Definition
| Skin;sheath around muscles-internal organs; cornea of the eye; pulp of the teeth |
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Term
| Receptors are activated by |
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Definition
| mechanical and chemical stimulation |
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Term
| Pain receptors are absent in the |
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Definition
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Term
| What are the 2 somatosensory pathways |
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Definition
| Spinothalamic Tract and the Dorsal Columns |
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Term
| Describe spinothalamic Tract |
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Definition
| pain, temp. decussates info immediately entering the spinal cord |
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Term
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Definition
| Fine touch - decussate up ipsilateral entering to the medulla oblongata and crossing to the other side to ventral posterior nucleus of the thalamus |
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Term
| Both somatosensory pathways go to the |
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Definition
| ventral posterior nucleus thalamus |
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Term
| The ventral Posterior nucleus goes to the |
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Definition
| primary somatosensory area to the parietal lobe (3,1,2) |
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Term
| The spinothalamic tract enter the |
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Definition
| spinal cord is going to fixate and cross contralateral side and go up to the brain |
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Term
| Dorsal columsn transmitting touch go up |
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Definition
| ipsilaterally in the level of the medulla to the nucleus gracillus where it is observed and later go into the thalamus and into the somatosensory interior part of the parietal lobe |
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Term
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Definition
| lower part; thigh, thorax, neck, shoulder, hand, fingers, tongue, abdomen |
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