Date | May 2018 | Marks available | 2 | Reference code | 18M.3.SL.TZ2.5 |
Level | Standard level | Paper | Paper 3 | Time zone | Time zone 2 |
Command term | Label | Question number | 5 | Adapted from | N/A |
Question
Label the pupil and the retina on the diagram.
[Source: Holly Fischer https://en.wikipedia.org/wiki/Human_eye#/media/File:Three_Internal_chambers_of_the_Eye.png]
Explain the use of the pupil reflex as a test for brain damage.
State the property of the nervous system that allows it to change with experience and allows the brain to recover from a stroke.
Markscheme
retina
pupil
e.g:
[Source: Holly Fischer https://en.wikipedia.org/wiki/Human_eye#/media/File:Three_Internal_chambers_of_the_Eye.png]
a. «bright» light is shone in to the eye
b. the pupil reflex is when the pupils constrict
c. if not observed could indicate damage to the optic nerve/ocular motor nerve/medulla oblongata
OR
brain stem death
OR
depressant drug use
plasticity
Examiners report