Question 23M.3.SL.TZ2.5
| Date | May 2023 | Marks available | [Maximum mark: 4] | Reference code | 23M.3.SL.TZ2.5 |
| Level | SL | Paper | 3 | Time zone | TZ2 |
| Command term | Explain, Identify | Question number | 5 | Adapted from | N/A |
Two areas of the human brain are labelled in the diagram.
[Source: Beal, J.A., 2005. [Human brain]. [image online] Available at:
https://commons.wikimedia.org/wiki/File:Human_brain_midsagittal_cut.JPG
[Accessed 15 July 2022].]
Identify one function that is controlled by the nucleus accumbens.
[1]
Nucleus accumbens: pleasure/laughter/regulation of sleep/motivation/reward centre/desire/feeding/addictive behaviours;
Most candidates were able to identify a function of the brain parts though some answered involuntary actions when a specific function was required.
Identify one function that is controlled by the medulla oblongata.
[1]
Medulla: breathing/cardiac function/respiration/digestion/vasodilation/swallowing/ sneezing/vomiting;
Explain how the brain may recover function after an accident or a stroke.
[2]
- through regeneration of neurons;
- (neuro)plasticity / makes new synapses / new neural pathways;
- reorganization of function, where another area of the brain takes over the function;
In (b) most were able to answer. Brain recovery after a stroke with neuroplasticity and having another portion of the brain take over the functions being the most frequent correct responses.
