Chap 3 Nervous System Review

If membrane potential changes from −40 mV to −35 mV, this is an example of

• depolarization

• repolarization

• hyperpolarization

• threshold polarization

In a resting neuron, which ion gates are open?

• Na⁺

• K⁺

• Cl^-

• Ca²⁺

Inhibitory postsynaptic potentials (IPSPs) lead to which response?

• depolarization

• repolarization

• hyperpolarization

• threshold polarization

_____ is most important for depolarization as the membrane becomes more permeable to this ion.

• Na⁺

• K⁺

• Cl^-

• Ca²⁺

At rest, the inside of the cell is more positively charged than the inside of the cell

• True

• False

The dendrites are responsible for carrying impulses TO to the cell body.

• True

• False

Parasympathetic nervous system is responsible for our “fight or flight” response.

• True

• False

At rest, potassium is higher outside of the cell than inside the cell.

• True

• False