Question

the parts of the brain concerned with equilibrium and keeping us upright are the cerebellum and midbrain
true
false
question 8
1 pts
disturbances in sensory neurons will result in an action potential if the
localized stimuli do not spread too far
stimulus remains local
stimulus is graded
stimuli become downgraded to localized ones
graded stimulus reaches a trigger zone

Explanation:

The cerebellum is responsible for balance, coordination, and posture. The midbrain is involved in functions like visual and auditory processing, not primarily in equilibrium and keeping us upright. So the first statement is false.

For the second question, an action potential in sensory neurons occurs when a graded stimulus (which is a local change in membrane potential) reaches a trigger zone (like the axon hillock) and depolarizes it to the threshold level. Localized stimuli that don't spread (or remain local) or are just graded (without reaching the trigger zone) won't cause an action potential. Stimuli being downgraded to localized ones also won't lead to an action potential.

Answer:

False
Graded stimulus reaches a trigger zone