| Date | November 2012 | Marks available | 2 | Reference code | 12N.3.HL.TZ0.5 |
| Level | Higher level | Paper | Paper 3 | Time zone | TZ0 |
| Command term | State | Question number | 5 | Adapted from | N/A |
Question
The following diagram shows a section through the spinal cord.
Outline one function for each of the following parts of the brain.
Label cells X and Y.
X: .............................................................
Y: .............................................................
Outline the direction of nerve impulses through the cells labelled X and Y.
Define the term reflex.
State whether the following psychoactive drugs are excitatory or inhibitory, using the table below.
Markscheme
X: (cell body of) sensory neuron;
Y: (cell body of) motor neuron;
(both needed)
from the sensory neuron/X to the motor neuron/Y
a rapid and unconscious response (to a stimulus / of the nervous system)
Award [1] for every two correct responses.
Examiners report
The majority of candidates could gain all the marks for this question based on factual recall but generally those who were not well prepared did not gain any marks.
The majority of candidates could gain all the marks for this question based on factual recall but generally those who were not well prepared did not gain any marks.
The majority of candidates could gain all the marks for this question based on factual recall but generally those who were not well prepared did not gain any marks.
The majority of candidates could gain all the marks for this question based on factual recall but generally those who were not well prepared did not gain any marks. Some fell short at giving a complete definition for the term reflex, usually missing the word rapid.
The majority of candidates could gain all the marks for this question based on factual recall but generally those who were not well prepared did not gain any marks.
