Deck 7: The Nervous System

Question 1

Depolarization of a membrane begins with the:

A)opening of chloride channels
B)opening of sodium channels
C)opening of potassium channels
D)closing of potassium channels

Answer 1

B

Question 2

Which nervous system division is referred to as the "fight-or-flight" system?

A)Central nervous system
B)Somatic nervous system
C)Sympathetic nervous system
D)Parasympathetic nervous system

Answer 2

C

Question 3

What is the result of inhibitory postsynaptic potentials (IPSPs)?

A)Depolarization
B)Hyperpolarization
C)Repolarization
D)An action potential

Answer 3

B

Question 4

Neurotransmitters are stored in:

A)the axon terminal
B)the synapse
C)the presynaptic neuron
D)the postsynaptic neuron

Question 5

What is the function of the afferent part of the peripheral nervous system?

A)Send motor commands to muscles
B)Transmit information from different receptors
C)Integrate and analyze sensory information
D)Control heart beat by changing its rhythm

Question 6

Which feature sets the nervous system apart from other organ systems?

A)It maintains homeostasis
B)The immediacy of response
C)Its size
D)The location

Question 7

Which division of the nervous system includes the brain and spinal cord?

A)Autonomic nervous system
B)Somatic nervous system
C)Central nervous system
D)Peripheral nervous system

Question 8

During normal resting condition,the levels of which positive ions are higher outside the neuron than inside?

A)Sodium ions
B)Chloride ions
C)Potassium ions
D)Calcium ions

Question 9

Which of the following axons conduct impulses more quickly?

A)A
B)B
C)A and B conduct impulses at the same speed
D)Neither A nor B are involved in conducting impulses

Question 10

What is the name of the structure labeled as "A"?

A)Dendrites
B)Cell body
C)Axon
D)Axon terminals

Question 11

Which type of cell cleans up cellular debris and pathogens in the nervous system?

A)Microglia
B)Schwann cell
C)Astrocyte
D)Ependymal cell

Question 12

What is the function of the somatic nervous system?

A)Conscious movement
B)Regulating digestion
C)Integrating and analyzing sensory information
D)Regulating blood pressure

Question 13

Compared to thicker axons,thinner axons:

A)conduct impulses more quickly
B)conduct impulses more often
C)conduct impulses more slowly
D)produce smaller action potentials

Question 14

What is a typical resting potential for neurons?

A)+30 mV
B)+15 mV
C)-55 mV
D)-70 mV

Question 15

The division of the nervous system that regulates functions such as blood vessel diameter and stomach activity is the:

A)autonomic division
B)somatic division
C)central division
D)All of these choices are correct

Question 16

The junction between two neurons is called a(an):

A)neuromuscular junction
B)gap junction
C)synapse
D)axon terminal

Question 17

What is the absolute refractory period?

A)Sodium channels have returned to their original state.
B)Sodium and potassium channels are returning to their original state.
C)Sodium channels are open but potassium channels are closed.
D)Sodium and potassium channels are open.

Question 18

What is the name of the structure labeled as "B"?

A)Cell body
B)Dendrites
C)Axon
D)Myelin sheath

Question 19

Which type of neuron sends information away from the central nervous system?

A)A
B)B
C)C
D)All of these choices are correct

Question 20

Which structure increases the speed of impulse transmission?

A)A
B)B
C)C
D)D

Question 21

The non-compressible fluid that protects the brain and the spinal cord is called:

A)blood
B)lymph
C)plasma
D)cerebrospinal fluid

Question 22

What is the name of the structure labeled as "E"?

A)Hypothalamus
B)Cerebellum
C)Medulla
D)Pons

Question 23

What is the function of structure as "D"?

A)Relay station for most incoming sensory information
B)Coordination and balance
C)Contains reflex centers for sneezing and coughing
D)Control of the pituitary gland via hormones

Question 24

Which phase of an action potential is depicted here?

A)Resting state
B)Depolarization
C)Repolarization
D)Hyperpolarization

Question 25

How many cranial nerves are there?

A)5
B)10
C)12
D)31

Question 26

Which structure contains acetylcholine?

A)A
B)B
C)C
D)D

Question 27

What is the name of the structure labeled as "C"?

A)Cerebrum
B)Hypothalamus
C)Thalamus
D)Medulla

Question 28

Which structure is a chemical-gated ion channel?

A)A
B)B
C)C
D)D

Question 29

Which phase of an action potential is depicted here?

A)Resting phase
B)Depolarization
C)Repolarization
D)Hyperpolarization

Question 30

What is the function of structure as "F"?

A)Contains vital centers related to blood pressure and reflex centers for swallowing
B)Contains vital centers focused on respiration
C)Processing and integration of sensory information
D)Relay station for most incoming sensory information

Question 31

What is the name of the structure labeled as "A"?

A)Cerebellum
B)Cerebrum
C)Thalamus
D)Pituitary gland

Question 32

What is the function of structure as "B"?

A)Contains vital centers related to respiration
B)Conscious thought
C)Coordination and learned motor skills
D)Regulation of body temperature and heart rate

Question 33

What is the function of the area of the cerebrum labeled as "A"?

A)Hearing
B)Contemplating the future
C)Vision
D)Touch

Question 34

What type of neuron is label "A" indicating?

A)Motor
B)Sensory
C)Interneuron
D)Effector

Question 35

Which phase of an action potential is depicted here?

A)Resting phase
B)Depolarization
C)Repolarization
D)Hyperpolarization

Question 36

Which type of cell allows the regeneration of neuronal axons in the peripheral nervous system?

A)Oligodendrocyte
B)Motor neuron
C)Schwann cell
D)Interneuron

Question 37

Which type of protection for the central nervous system is not shown in this diagram?

A)Bones of the axial skeleton
B)Meninges
C)Dura mater
D)Cerebrospinal fluid and its circulation

Question 38

The channels shown here are:

A)ligand gated
B)voltage gated
C)mechanically regulated
D)temperature regulated

Question 39

What is the name of the area labeled as "B"?

A)Prefrontal cortex
B)Wernicke's area
C)Visual association area
D)Broca's area

Question 40

What does the parasympathetic nervous system do to the heart rate?

A)Lowers it
B)Increases it
C)Maintains it
D)Increases it first then lowers it after the emergency is gone

Question 41

Ependymal cells are neuroglia which assist in the production of cerebrospinal fluid.

Question 42

All potassium channels are voltage regulated on the neuron membrane.

Question 43

Excitatory postsynaptic potentials (EPSPs)cause a slight depolarization of the neuron.

Question 44

The outer covering of the brain is a tough connective tissue layer called the dura mater.

Question 45

The peripheral nervous system is composed of nerves whereas the central nervous system is composed of the brain and spinal cord.

Question 46

The spinal nerves only contain sensory neurons while the cranial nerves contain only motor neurons.

Question 47

Repolarization is due to the opening of sodium channels.

Question 48

Our special senses include receptors for touch,pain,and temperature.

Question 49

In the diagram known as the homunculus,the hands are drawn to indicate that a large proportion of both the primary motor area and primary somatosensory area is devoted to them.

Question 50

The brain is composed of interneurons,motor neurons,and sensory neurons.