Special senses - balance 0.0 / 5 ? PharmacyBalanceUniversityNone Created by: RscottqubCreated on: 30-03-19 20:17 2nd fucntion of inner ear provide info on position of head 1 of 15 what is the organ for detecting sensations of balance vestibular apparatus 2 of 15 where is this located? in bony labyrinth next to cochlea 3 of 15 inner mem if b. laby is the func part of the v. apparatus and includes 5 parts 3 semicircular canals, 3 otolothic organs, utircle, saccule 4 of 15 what do the uticle and saccule do detect gravity 5 of 15 what are the otolothic organs pair of organs - both have hair cells called macula 6 of 15 macula of utricle determines body orientation when body is upright 7 of 15 macula of saccule determines body orientation when person is lying down 8 of 15 macula project into gelatenous membrane, called the otholithic membrane - contains otholins - tiny crystals of CaCO3 9 of 15 how are hair cells activated when the surroundings shift/move - ie crystals move 10 of 15 How many semicircular canals 3 11 of 15 how are they orientated at right angles to each other , each will detect rotation in its own plane 12 of 15 what is the sensory organ in the semi circ crista ampularis - which have cilia which project into gelatious cupula* look up diagram 13 of 15 what happens when head moves fluid in SCC initially is stationary - but will then move - causing movemnt of cupula in opp direction to rotation 14 of 15 bending of hair cells activate true - this is caused by movemt of fluid 15 of 15
Comments
No comments have yet been made