What is the labeled line principle
Type of sensation felt when nerve fiber is stimulated is determined by receptors being activated and the termination point
Free nerve endings detects what and what kind of receptors
Sup.
Detects crude touch and pressure
Slowly adapting
Meissner’s corpuscles detects what and what kind of receptors
Sup.
Never endings of large myelinated sensory nerve divers
Detect fine touch and low frequency
Rapidly adapting
Markel’s discs detects what and what kind of receptors
Sup.
Detect touch and light pressure
Slowly adapting (writing)
Hair end organ detects what and what kind of receptors
Sup to deep
Free nerve endings of hair root
Detects hair movement
Rapidly adapting
Ruffini endings detects what and what kind of receptors
Deep
Detects heavy prolonged touch and pressure
Slowly adapting
Pacinian corpuscles detects what and what kind of receptors
Deep
Detect tissue vibration and rapid change in mechanical state of the tissue
Deep pressure and stretch
Rapidly adapting
What does rapidly adapting mean
Adapt to rapidly changing signals
What does slowly adapting receptors mean
Adapts to long continuous signals
What is the receptive field
The surface area that stimuli must reach to activate that neuron
What is the relationship between receptive field and density of receptors
Inversely proportional
Large fields have less receptors
What is the discrimination and receptive field of back and legs
More acuity
Low number of receptors
Large receptive field
What is the discrimination and receptive field of fingertips and tongues
Less acuity
High number of receptors
Small receptive field
More discrimination
What are the two pain receptors
Nociceptors and thermoreceptors
Where do you find nociceptors
Superficial skin
Internal tissue
Arterial walls
Bones joints muscle
What are nociceptors stimulated by
Mechanical
Thermal
Chemical
Where do type IA and II fibres get their information from
And at what speed
Proprioception
80-120m/sec in muscle spindles
Where do type Ib fibres get there information from
Speed?
Golgi tendon organs
Joints
80-120m/sec
Where do type AB fibres get their information from
Speed?
Sense of touch, skin
Meissner corpuscles, merkels discs, hair receptors, pacinian corpuscles, Ruffini endings
30-70m/sec
Where do type A delta get there information from
Free nerve endings
Fast pain
Cold deep pressure
Touch sensation
6-30m/sec
Where do type C fibres get their information
Free never endings
Slow pain
Cold warmth
Crude touch
Pressure sensations
0.5-2m/sec
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module 1 neurological system41
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Module 2 Membrane Resting Potential And AP56
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Module 3 organization of nervous system, synapses and transmitters55
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Module 4 Muscle Contraction And Excitation52
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521
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#1 Introduction to metabolism & bioenergetics89
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#2 ATP Creatine Phosphate and ATP synthesis43
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#3 classification and function of carbs51
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#4 glucose transporters34
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#5 conversion of fructose to galactose to glucose in liver17
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#6 glycogenesis & glyceogenolysis30
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#7 glycogenesis, glycogenolysis regulations34
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#8,9,10 anaerobic/aerobic glycolysis82
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#11 gluconeogenesis24
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#12 lipid metabolism classification and function53
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#13 lipid metab: lipogenesis, lipolysis, B-oxi45
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#14 lipoproteins and lipid transport and ketone met61
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#15 protein metabolissm72
