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Usabo Semi Complete Set Key Concepts And Revision Notes

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Usabo Semi Complete Set Key Concepts And Revision Notes

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USABO SEMI COMPLETE SET KEY
CONCEPTS AND REVISION NOTES

◉ Lateral inhibition in the retina
Answer: Horizontal cells inhibit neighboring pathways to sharpen
visual contrast and edge perception.


◉ Optic chiasm processing rule
Answer: Visual information crosses so each hemisphere processes
the opposite visual field.


◉ Taste receptor mechanisms by flavor
Answer: Sweet, umami, bitter use GPCRs; sour and salty use direct
ion channels.


◉ Taste cell specificity
Answer: Each taste cell expresses one receptor type; any tongue
region can detect any taste.


◉ Olfactory transduction mechanism
Answer: Odorant binds GPCR neuron → cAMP cascade opens
Na⁺/Ca²⁺ channels → cell depolarizes.


◉ Sarcomere behavior during contraction

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