1. Which of the following is entirely located within the central nervous system?
A. sensory neuron
B. sensory receptor
C. motor neuron
D. cranial nerve
E. interneuron @
Depolarization of the neuron occurs when
the potassium gates open and potassium moves to the outside of the cell.
the sodium-potassium pump moves sodium inside the cell
sodium gates open and sodium moves to the inside of the cell. @
the sodium-potassium pump moves potassium inside the cell.
Water moves to the outside of the cell and chloride items follow.
3. Place the events in the transmission of an action potential in the correct order. 1. An action
potential begins in the receiving neuron. 2. Neurotransmitters are released into the
synaptic cleft. 3. An action potential arrives at an axon terminal. 4. Calcium ions enter the
axon terminal. 5. Sodium ions diffuse into the receiving neuron. 6. Synaptic vesicles fuse
with the plasma membrane. 7. Neurotransmitters molecules bind to the membrane of the
A. 1, 2, 6, 7, 4, 3, 5
B. 3, 5, 6, 2, 7, 4, 1
C. 3, 4, 6, 2, 7, 5, 1 @
D. 2, 3, 6, 7, 4, 5, 1
E. 7, 6, 5, 3, 4, 2, 1
Which is the largest part of the human brain?
A. medulla oblongata
E. cerebrum @
Within a single neuron, the direction an impulse follows is:
dendrite>>cell body>>axon @