Chapter 45 Organization of the Nervous System, Basic Functions of Synapses, and Neurotransmitters

Chapter 45  Organization of the Nervous System, Basic Functions of Synapses, and Neurotransmitters

Complete Chapter Questions And Answers
 

Sample Questions

Choose the best answer

1. Prolonged changes in neuronal activity are achieved through the activation of:
A. Voltage gated chloride channels
B. Transmitter gated sodium channels
C. G-protein coupled channels
D. Voltage gated potassium channels

ANS: C

2. In a neuron with a resting membrane potential of -65 mV, the distribution of which ion across the neuronal membrane represents the greatest potential electromotive force (EMF)?
A. Potassium
B. Chloride
C. Sodium
D. Calcium

ANS: C

3. Inhibition of neuronal activity can be achieved by:
A. Allowing calcium to enter the presynaptic membrane
B. Opening sodium channels
C. Opening sodium and chloride channels simultaneously
D. Opening postsynaptic calcium channels

ANS: C

4. Transmission of the electrical signal from the dendrites to the soma of a neuron occurs by:
A. Short circuit current flow
B. An action potential mechanism
C. Electrotonic conduction
D. Capacitive discharge

ANS: C

5. Post-tetanic facilitation is thought to be the result of:
A. Opening voltage-gated sodium channels
B. Opening transmitter gated potassium channels
C. A build up of calcium in the presynaptic terminal
D. Electrotonic conduction

ANS: C