Vestibular system 0.0 / 5 ? BiologysensesUniversityNone Created by: SarahCreated on: 27-04-17 21:13 what do the ampulla and macula do? detect position and motion of head 1 of 20 for each ear how many maccula are there? 2 2 of 20 where are the macula found? 1 in the saccule and one in the urticle 3 of 20 where is the ampulla located? 1 in each of the semicircular canals 4 of 20 the utricle is responsible for what movement? horizontal acceleration 5 of 20 what is the saccule responsible for? vertical movements 6 of 20 main function of utricle and saccule? movement in a direction = linear acceleration 7 of 20 what is the main function of the semicircular canals? rotational movement, angular acceleration 8 of 20 how are the hairs in the saccula and utricle depolarized? bending of the hair cells in the right direction 9 of 20 structure of maccule? thick epithelium with cilia in gelainous matrix with calcium carbonate crystals (otholiths)distort with gravity as are heavy 10 of 20 what causes us to know about head tilting? hair cells move as othilliths move 11 of 20 how does the ampulla produce movement in hair cells? endolymph moves which pushes the cupula up bending the hair cells up 12 of 20 what is is the vestibular system? sensory system 13 of 20 what does the vestibular system detect? spatial orientation, head position and motion 14 of 20 what are the semicircular canals in? vestibular labyrinth 15 of 20 where is endolymph in the semicircular canals 16 of 20 movement of endolyph causes movement of what? the sterocilia in the ampulla (sends info to brain) 17 of 20 what nerve is used in the vestibular system? vestibular nerve, is one of 2 branches of the vestibulocohlear nerve 8th pair of cranial nerves 18 of 20 what are the otholithic organs? saccule and utricle 19 of 20 how does the v system allow eyes to follow movement? connects with occulomotor nuclei and extraoccular muscles 20 of 20
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