The human brain controls many functions. Dopamine and serotonin are chemicals produced in the brain that are essential for good health. Drugs called selective serotonin re-uptake inhibitors (SSRIs) affect the reabsorption of serotonin at synapses in the brain. This may help to reduce depression. Explain why SSRIs can be used to treat depression. (3) ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................
Exam No：wbi15-01-que-20240608 Year：2024 Question No：2(b)(ii)
Answer:
An explanation that includes three of the following points:
- depression caused by lack of serotonin (1)
- SSRI's bind to \{channel / proteins\} which reuptake serotonin (1)
- (therefore) \{inhibition of / decreased / prevents\} serotonin \{(re-)uptake / reabsorption\} (1)
- serotonin (can still) bind to receptors on post-synaptic membrane (1)
- (resulting in more) \{depolarisation of / action potentials in\} \{post-synaptic membrane / relay neurone\} (1)
- depression caused by lack of serotonin (1)
- SSRI's bind to \{channel / proteins\} which reuptake serotonin (1)
- (therefore) \{inhibition of / decreased / prevents\} serotonin \{(re-)uptake / reabsorption\} (1)
- serotonin (can still) bind to receptors on post-synaptic membrane (1)
- (resulting in more) \{depolarisation of / action potentials in\} \{post-synaptic membrane / relay neurone\} (1)
Knowledge points:
CH8 – Coordination, Response and Gene Technology
Solution:
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