Trigeminal Proprioception Flashcards
what is proprioception
awareness of position of body parts in relation to each other and surroundings
what is kinaesthesia
movement awareness
what are the receptors involved in proprioception
muscle spindles
golgi tendon organs
joint receptors
- also stretch receptors in skin
what does principal jaw closing muscles have
muscle spindles
do jaw open muscles have muscle spindles
no
what is designed to put force through teeth
jaw closing muscles
PDL mechanoreceptors
what is special about the TMJ
has range of receptors give information how open and how close and speed doing so of the jaw
what do inner ear receptors contribute
perceive head position
what are the two types of muscle fibres
extrafusla and intrafusal
what are extrafusal fibres
bulk of muscle fibres
contractile
generate force and movement
what are intrafusal fibres
muscle spindles
specialised muscle fibres
within a ct capsule
what are the there zones of an intrafusla fibre
2 contractile end portions
non contractile central portion can be stretched
what are the afferents of the intrafusal fibre activated by
stretch
what are the secondary nerve endings in the intrafusal fibre
detects length of fibres slowly adapting
what is the primary annulo-spira nerve endings
detects length of fibres and speed of change of length