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Question 18M.3.SL.TZ1.c

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Date May 2018 Marks available [Maximum mark: 2] Reference code 18M.3.SL.TZ1.c
Level SL Paper 3 Time zone TZ1
Command term Outline Question number c Adapted from N/A
c.
[Maximum mark: 2]
18M.3.SL.TZ1.c

Outline the role of the ear in balance perception.

[2]

Markscheme

a. head movements cause fluid in the canals to move 

b. this deflects hair cells 

c. (semicircular canals) are perpendicular/right angles detecting movements in any direction/plane 

d. send nerve impulses to the brain (by acoustic nerve)

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