This question is unfortunately incomplete. A <span>neurotoxin that blocks voltage-gated na+ channels will have all of the effects listed: there will be impairment of action potentials and neurotransmitter release, and in sufficient quantities, the toxin will prove fatal to the organism.</span>
The PRIMARY MOTOR AREA is the part of the brain we use to initiate skeletal muscle movement.
The primary motor cortex, or M1, is located in the frontal lobe of the brain, along the precentral gyrus. Its primary role is to generate neural impulses that control the execution of movement.
<span>the opening becomes smaller, and less blood flows through
When the artery contracts, it gets tighter and smaller. Since there is less space, less blood flows through.</span>