$$-70\ \text{mV}$$ and $$+30\ \text{mV}$$

Question 1

Which two structures make up the central nervous system (CNS)?

Accepted Answer

Brain and spinal cord

Question 2

During which period can an excitable cell NOT generate another action potential, regardless of stimulus strength?

Accepted Answer

Absolute refractory period

Question 3

Which type of neuron carries nerve impulses from sensory receptors toward the CNS?

Accepted Answer

Sensory (afferent) neurons

Question 4

Which neuroglial cell produces the myelin sheath in the central nervous system?

Accepted Answer

Oligodendrocyte

Question 5

Where is the nucleus of a neuron located?

Accepted Answer

Cell body (soma)

Question 6

Clusters of rough endoplasmic reticulum in neurons are called:

Accepted Answer

Nissl bodies

Question 7

The 'trigger zone' of a neuron, where nerve impulses arise, is located at the:

Accepted Answer

Axon hillock

Question 8

Synaptic vesicles are responsible for storing:

Accepted Answer

Neurotransmitters

Question 9

What are the effectors for the somatic nervous system?

Accepted Answer

Skeletal muscle

Question 10

Nerve cell bodies in the peripheral nervous system (PNS) are generally clustered together to form:

Accepted Answer

Ganglia

Question 11

A neuron with one dendrite and one axon is classified as a:

Accepted Answer

Bipolar neuron

Question 12

An ion channel that opens in response to changes in membrane potential is called a:

Accepted Answer

Voltage-gated channel

Question 13

Impulse conduction that appears to jump from one node to the next is called:

Accepted Answer

Saltatory conduction

Question 14

Myelinated neurons make up ________ matter and transmit impulses ________.

Accepted Answer

White; rapidly

Question 15

Ion channels that are always open are called:

Accepted Answer

Leak channels

Question 16

Which of the following lists the three main functions of the nervous system?

Accepted Answer

Sensory, integrative, motor

Question 17

Virtually all sensory neurons are structurally classified as ________, while most association neurons are classified as ________.

Accepted Answer

Unipolar; multipolar

Question 18

Which neuroglial cells line the ventricles of the brain and are responsible for circulating cerebrospinal fluid (CSF)?

Accepted Answer

Ependymal cells

Question 19

Which ion rushes into the neuron to depolarize the membrane and generate a graded potential?

Accepted Answer

Sodium ($$Na^+)$$

Question 20

An action potential produces a change in voltage across the membrane that ranges between:

Accepted Answer

$$-70\ 	ext{mV}$$ and $$+30\ 	ext{mV}$$

Step-by-Step Guidance for Nervous Tissue and the Nervous System Practice Quiz

스터디 가이드 - 연습 문제