Term
| All sensory info comes from what? |
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Definition
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Term
| What are the two general types of redeptors? |
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Definition
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Term
| What are the two main types of Conscious Receptors? |
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Definition
| Somatic Receptors/Telereceptors |
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Term
| What do Somatic Receptors deal with? |
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Definition
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Term
| What do telereceptors deal with? |
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Definition
| "Gases, Light, Sound, smell" |
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Term
| What are the 2 types of Unconcious receptors? |
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Definition
| "Proprioceptors, Enteroceptors" |
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Term
| What are the 2 main functions of Proprioceptors? |
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Definition
| "Postiton Sense (Posture), Kinesthesia (Movement)" |
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Term
| What do enteroceptors associate with? |
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Definition
| "Visceral Sensations (Chemo, Stretch, Baro)" |
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Term
| What is an adequate stimulus or generator potential? |
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Definition
| Intensity of Sensation that can start a general stimulus |
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Term
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Definition
| Difference in magnitude from a reference stimulus to a second stimulus |
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Term
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Definition
| Conversion & Amplification of sensory stimulus to electrical signal. |
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Term
| How are a Generator Potential & Action Potential related? |
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Definition
| Generator Potential create Action Potentials. |
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Term
| Which is more sensitive a Generator Potential or an action potential? |
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Definition
| Generator Potential (Only need a +10mv change) |
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Term
| How are a Generator Potential & Action Potential different? |
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Definition
| AP-All or none GP- Can be summed and or proportional to stimulus. |
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Term
| Higher centers shutting of recognition allows for what? |
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Definition
| Adaption-(Ex. Able to adapt to wearing Clothes.) |
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Term
| What is the hardest sensation to adapt to? |
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Definition
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Term
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Definition
| Decrease in receptor sensitivity during a constant stimulus. |
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Term
| What are slow adapting receptors? |
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Definition
| "Free nerve endings, Merkel's Disks, Ruffini's Endbulbs" |
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Term
| To what stimuli do slow adapting receptors respond best to? |
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Definition
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Term
| To what stimuli do rapid adapting receptors respond best to? |
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Definition
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Term
| What are rapid adapting receptors? |
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Definition
| Meissner's & Pacinian Corpuscles |
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Term
| What are the 5 functional classifications of receptors? |
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Definition
| "Mechano-, Thermo-,Electromagnetic, Chemo-, Nocioceptors" |
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Term
| What are the 3 anatomical classifications of receptors? |
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Definition
| "Nonencapsulated, Encapsulated, Neuromuscular" |
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Term
| What are 3 kinds of nonencapsulated receptors? |
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Definition
| "Free nerve endings, Merkel's Disks (Tactile), Hair Follicle Receptors" |
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Term
| What are 2 kinds of Neuromuscular receptors? |
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Definition
| "Muscle Spindles, Golgi Tendon Organs" |
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Term
| What are nerve fiber tracts? |
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Definition
| Homogenous grouos of fibers that are sensory or motor. |
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Term
| What type of tracts are motor? |
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Definition
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Term
| What type of tracts are sensory? |
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Definition
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Term
| What sensations do Free Nerve Endings sense? |
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Definition
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Term
| What sensations do Merkel's Discs & Ruffini's Endbulbs sense? |
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Definition
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Term
| What sensations do Meisner's & Pacinian corpuscles sense? |
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Definition
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Term
| The Posterior Column-Medial Lemniscal system receptors are what? |
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Definition
| "Meissner's & Pacinian Corpuscles, Ruffini's Endbulbs , Free Nerve Endings" |
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Term
| What is the 1st order neuron of the Medial Lemniscal system? |
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Definition
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Term
| What 2 tracts give rise to the Medial Lemniscal system? |
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Definition
| Fasciculus Gracilis & Cuneatus |
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Term
| What is the 2nd order neuron of the Medial Lemniscal system? |
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Definition
| Nucleus Gracilis & Cuneatus in Medulla |
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Term
| What is the 3rd order neuron of the Medial Lemniscal system? |
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Definition
| Ventroposteriolateral (VPL) nucleus of Thalamus |
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Term
| What is the crossing pattern and location in the ML system? |
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Definition
| Crossed fibers at the Medial Lemniscus (2nd order Neurons) |
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Term
| What is the final destination of the MLS? |
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Definition
|
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Term
| What is the function of the MLS? |
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Definition
| "Conscious Proprioception, Descriminative Touch, Vibratory Sense" |
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Term
| What is descriminative touch? |
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Definition
| Ability to form shape with eyes closed. |
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Term
| What are some problems that results from loss of the MLS? |
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Definition
| "Sensory Ataxia, Astereoagnasia" |
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Term
| What is a sensory ataxia? |
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Definition
| "Loss of coordination, body position in environment." |
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Term
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Definition
| Ability to determine the shape. |
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Term
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Definition
| Cannont determine the shape. |
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Term
| What are the main receptors of the Spinocerebellar pathway? |
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Definition
| "Muscle Spindles (1-A), Golgi Tendon Organs (1-B)" |
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Term
| What is the 1st order neuron of the Spinocerebellar pathway? |
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Definition
|
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Term
| What 3 tracts give rise to the Spinocerebellar pathway? |
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Definition
| "Post. Spinocerebellar also Cuneocerebellar, Ant. Spinocerebellar" |
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Term
| What is the crossing pattern & location of the Post. Spinocerebellar path? |
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Definition
| Uncrossed to the inferior cerebellar peduncle. |
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Term
| What are the 2nd order neuron of the Spinocerebellar pathway? |
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Definition
| "Alpha motorneurons, Nucleus Dorsalis of Clarke (LE), Accessory Cuneate Nucleus (UE)" |
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Term
| What is the 3rd order neuron of the Spinocerebellar pathway? |
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Definition
|
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Term
| What is the final destination of the Spinocerebellar pathway? |
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Definition
|
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Term
| What is the function of the Spinocerebellar pathway? |
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Definition
| Unconscious Proprioception |
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Term
| The Spinoreticular pathway receptors are what? |
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Definition
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Term
| What is the 1st order neuron of the Spinoreticular path? |
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Definition
|
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Term
| What is the 2nd order neuron of the Spinoreticular path? |
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Definition
|
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Term
| What is the 3rd order neuron of the Spinoreticular path? |
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Definition
| Reticular Formation at all brainstem levels. |
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Term
| What is the crossing pattern in the Spinoreticular path? |
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Definition
|
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Term
| What is the final destination of the Spinoreticular path? |
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Definition
|
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Term
| What is the function of the Spinoreticular path? |
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Definition
| "Cortical Arousal, Inputs into limbic cortex" |
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Term
| What is cortical arousal? |
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Definition
| Induce or maintain a waking state. |
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Term
| What is the limbic cortex and inputs? |
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Definition
| "Nature of stimulus (Pain, touch etc.) Quality (Pleasurable or aversive)" |
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Term
| The Spinotectal Tract receptors are what? |
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Definition
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Term
| What is the 1st order neuron of the Spinotectal Tract? |
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Definition
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Term
| What is the 2nd order neuron of the Spinotectal Tract? |
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Definition
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Term
| What is the 3rd order neuron of the Spinotectal Tract? |
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Definition
| Fibers ascend crossed to Superior Colliculus |
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Term
| What is the crossing pattern in the Spinotectal Tract? |
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Definition
| Crossed to superior colliculus. |
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Term
| What is the function of the Spinotectal Tract? |
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Definition
| "Turning Eyes, Head, & Trunk in direction of visual & auditory stimuli." |
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Term
| The Lateral Spinothalamic Tract receptors are what? |
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Definition
| Free Nerve Endings for pain/temp. |
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Term
| What is the 1st order neuron of the Lateral Spinothalamic Tract? |
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Definition
|
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Term
| What is the 2nd order neuron of the Lateral Spinothalamic Tract? |
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Definition
| Lamina I-IV Mostly Lamina II Substantia Gelatinosa |
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Term
| What is the 3rd order neuron of the Lateral Spinothalamic Tract? |
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Definition
| Ventroposteriolateral (VPL) nucleus of Thalamus |
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Term
| What is the crossing pattern in the Lateral Spinothalamic Tract? |
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Definition
| Crosses through the Ant. Commissure |
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Term
| What is the function of the Lateral Spinothalamic Tract? |
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Definition
|
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Term
| What type of fibers ascend in Lateral Spinothalamic Tract? |
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Definition
| Type III or IV (A-Delta or C) ascend in Lissauer's Tract |
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Term
| The Ant. Spinothalamic Tract receptors are what? |
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Definition
| Receptors for crude touch & Pressure |
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Term
| What is the 1st order neuron of the Ant. Spinothalamic Tract? |
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Definition
|
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Term
| What is the 2nd order neuron of the Ant. Spinothalamic Tract? |
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Definition
|
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Term
| What is the 3rd order neuron of the Ant. Spinothalamic Tract? |
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Definition
| Ventroposteriolateral (VPL) nucleus of Thalamus |
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|
Term
| What is the crossing pattern in the Ant. Spinothalamic Tract? |
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Definition
|
|
Term
| What is the function of the Ant. Spinothalamic Tract? |
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Definition
|
|
Term
| What type of fibers ascend in Ant. Spinothalamic Tract? |
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Definition
| Type III (A-Delta) ascend in Lissauer's Tract |
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|
Term
| What is the function of the Spino-Olivary Tract? |
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Definition
|
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Term
| What is the function of the Viscerosensory Tract? |
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Definition
| "Visceral pains caused by ischemia, smooth muscle spasm, distension" |
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