Unit quiz: Circuit balance, systems and behavior

Check understanding, separately from reading

5 questions · 80% to pass · no timer. This quiz checks the lessons in this unit. These authored questions assess recognition and application of the taught distinctions, not professional qualification. You may review the lessons and retry. Repeat attempts reuse the question bank; a remembered answer is not proof of transfer to a new situation.

Saving a lesson records reading only. Previous lesson completions have not been converted into passing scores. You can continue reading without a pass; the assessment remains unpassed.

Question 1

Several small excitatory inputs close together may reach threshold. An inhibitory conductance can reduce their effectiveness even if excitation is present.

Question 2

In a myelinated axon, voltage changes spread between nodes where action potentials regenerate. Damage to myelin can impair conduction.

Question 3

A withdrawal response involves peripheral sensory input and spinal circuitry. Calling it peripheral alone leaves out central processing.

Question 4

Visual responses begin with light-sensitive cells, but perceived brightness depends on surrounding context. Equal physical intensity need not appear equally bright.

Question 5

Reaching for a cup changes if the cup is heavier than expected. Sensory feedback helps revise force rather than continuing the original command unchanged.

Continuing does not mark this assessment passed.