Question 1

Which of the following best represents the integration function of the nervous system?

Accepted Answer

Deciding to slow down and pull your car over

Question 2

Refer to the first image. Which structure is labeled 'A' and what does it comprise?

Accepted Answer

Central nervous system; brain and spinal cord

Question 3

Which type of neuroglia forms myelin sheaths around CNS nerve fibers?

Accepted Answer

Oligodendrocytes

Question 4

Which of the following best describes the function of the myelin sheath?

Accepted Answer

It increases the speed of nerve impulse conduction

Question 5

In the second image (flowchart), which division is responsible for mobilizing body systems during activity?

Accepted Answer

Sympathetic division

Question 6

Which equation correctly represents Ohm’s Law as it applies to the nervous system?

Accepted Answer

$$V = I 	imes R$$

Question 7

A neuron’s membrane potential changes from $$-70 mV to$$ $$-65 mV. $$What does this represent?

Accepted Answer

A depolarization

Question 8

Which type of graded potential is produced in a neuron that is stimulated by neurotransmitter released by another neuron?

Accepted Answer

Postsynaptic potential

Question 9

Refer to the third, fourth, and fifth images. What is the structural classification of neuron 'A'?

Accepted Answer

Unipolar neuron

Question 10

Which of the following is true regarding the absolute refractory period?

Accepted Answer

It prevents the initiation of another action potential regardless of stimulus strength

Question 11

Which type of membrane ion channel opens in response to a neurotransmitter binding?

Accepted Answer

Chemically gated channel

Question 12

Refer to the sixth image (voltmeter). What does the negative sign on the voltmeter indicate?

Accepted Answer

The inside of the membrane is negative relative to the outside

Question 13

Which of the following occurs as the strength of a depolarizing stimulus increases?

Accepted Answer

Action potentials are generated more frequently

Question 14

Refer to the seventh image (myelin sheath gaps). What is the importance of the myelin sheath gaps in saltatory conduction?

Accepted Answer

They allow the action potential to jump rapidly from gap to gap

Question 15

Which of the following neurotransmitters is generally inhibitory?

Accepted Answer

Glycine

Question 16

Refer to the ninth image (chloride channel). The ion channel shown is most likely to produce which postsynaptic potential?

Accepted Answer

Inhibitory postsynaptic potential (IPSP)

Question 17

Which type of neural processing is represented by the simple reflex arc in the tenth image?

Accepted Answer

Serial processing

Question 18

Which of the following best describes the function of interneurons?

Accepted Answer

Shuttle signals through CNS pathways where integration occurs

Question 19

Which of the following is a characteristic of graded potentials but NOT action potentials?

Accepted Answer

Decay with distance traveled

Question 20

Which type of neurotransmitter receptor mediates fast synaptic transmission?

Accepted Answer

Channel-linked receptors

Study Guidance for Fundamentals of the Nervous System and Nervous Tissue (ANP)

Study Guide - Practice Questions