It’s either A or D depending on which side has a higher concentration of that molecule. If outside concentration is higher it will go from outside to inside. And if inside concentration is higher from inside to outside.
The part of the CNS that is responsible for these functions is the brain stem.
The brain stem is the part of the brain that control very basic functions of your organism and lets them work together as they should. The other parts that are mentioned all have much more specific and also different roles.
After the action potential passes through an axon, gated potassium channels open and allows potassium ions to flow out.
To find an angle you use a variable like x or y. Sincw its a straight angle, it would be x +103 = 180. then you would subtract 103 on both sides. then you'll get x= 77 degrees
