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40 Cards in this Set
- Front
- Back
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What are the otolinth organs?
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the utricle and saccule - organs of the ear to sense linear/static displacement, maybe also linear accel
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What are the semicircular canals?
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in the ear - sense rotational movement
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What shortens in isotonic contraction?
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Hband and I band
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What are the 3 fascial layers of muscle?
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ENDO - PERI - EPI
cell - fascicle - muscle |
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what nerves supply gag reflex?
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9/10 - G and V
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which tract is responsible for fine movments/direction of movement?
cortico/rubro/ spinal corticobulbar |
corticospinal
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which tract is responsible for movemnt of distal limbs?
cortico/rubro/ spinal corticobulbar |
rubrospinal
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What nerves are you testing if you touch the right cornea?
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right trigeminal
right and left facial |
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Where are proprioceptors located?
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PDL/GUMS/SKELETAL MUSCLE
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where in the mouth are proprioceptors NOT located?
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PULP
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T/F the golgi tendon organ is disynaptic
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T
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GTO and Muscle spindle
which is in parallel with muscle? |
SPINDLE
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GTO and Muscle spindle
which is in series with muscle? |
GTO
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What type of fiber is the GTO afferent/
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1b - to antagonist and to inhibit homo muscle
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What increases activity of musle spindle?
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gamma innervation
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describe components of innervatin of the spindle?
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sensory - 1a and 2
motor - gamma |
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What is spacticity?
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increas in tone during stretch
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What allows muscle movemetn to be smooth
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asynchronous contraction
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What senses rotation?
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the CRISTA AMPULLA of the semicircular canal
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where are hair cells located?
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in the peith (crista) of ampulla in SC canals
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what in the mouth senses hte interdental septum?
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spindles
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when is a muscles maximum tension?
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resting length?
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when is amuscles maximum active tension?
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if max cross brides
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Where is the trigeminal nucleus?
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mesencephalinc nucleus
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where is the nucleus of the muscle spindle aff for the limbs?
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DRG
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What type of disease causes bibinski sign?
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upper motor neuron
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which factors allow a muscle to produce large tension?
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lots of CT, multipinnated
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how does length effect the tension possible by amuscle?
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it is not a factor in increasing tension
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What is the size principle?
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small muscles fire first, are not subject to fatigue, are weaker
larger muscles fire second, stronger, and fatigue |
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What is first used for energy in contraction?
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ATP
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the ___head binds ___ when ___reveals it.
___binds Ca to cause this conf change. |
myosin head binds actin
tropomyosin reveals it Troponin binds Ca |
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Contraction: put these in order
AP , Ca release, down t-tubule, reuptake of Ca, contractin |
AP - T-Tubules - Ca release - Contraction - reuptake of Ca
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Lesions of the masticatory regions cause all but what?
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time to reduce bolus/chewing rate
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what do lesions of masticatory region of cortex cause?
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problems prepping food, moving it back to the molars, and keeping a stable bite force
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What is a motor unit? (parts)
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motor neuron axon
+ terminal branches + muscle fiber |
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wich of the motor unit fibersare oxidative?
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SLOW
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how do you increase force of muscle contraction?
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spatial and temporal summation
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What area of the motor cortex is for fine masticatory movement?
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lateral
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what area of brain is responsible for fine movements?
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pre-central gyrus of frontal lobe
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Which myosin head is rapid? slow?
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rapid - 2b
slow - I |
