Question 1

A neuron that has as its primary function the job of connecting other neurons is called a(n)_________.

Accepted Answer

A)  interneuron 
B)  glial cell 
C)  efferent neuron 
D)  afferent neuron 
A)  interneuron 
B)  glial cell 
C)  efferent neuron 
D)  afferent neuron

Question 2

Which of the following is NOT a characteristic of neurons?

Accepted Answer

A)  They conduct impulses. 
B)  They have extreme longevity. 
C)  They have an exceptionally high metabolic rate. 
D)  They are mitotic. 
A)  They conduct impulses. 
B)  They have extreme longevity. 
C)  They have an exceptionally high metabolic rate. 
D)  They are mitotic.

Question 3

An inhibitory postsynaptic potential (IPSP) is associated with_________ .

Accepted Answer

A)  opening of voltage-regulated channels 
B)  lowering the threshold for an action potential to occur 
C)  hyperpolarization 
D)  a change in sodium ion permeability 
A)  opening of voltage-regulated channels 
B)  lowering the threshold for an action potential to occur 
C)  hyperpolarization 
D)  a change in sodium ion permeability

Question 4

When a neurotransmitter like GABA is acting in an inhibitory manner which of the following is likely a result of the GABA acting on the postsynaptic cell?

Accepted Answer

A)  opening of chemically gated sodium channels 
B)  hyperpolarization of the postsynaptic cell membrane 
C)  depolarization of the postsynaptic cell membrane 
D)  influx of positively charged ions into the postsynaptic cell 
A)  opening of chemically gated sodium channels 
B)  hyperpolarization of the postsynaptic cell membrane 
C)  depolarization of the postsynaptic cell membrane 
D)  influx of positively charged ions into the postsynaptic cell

Question 5

Which of the following describes the excitatory postsynaptic potential?

Accepted Answer

A)  short distance depolarization 
B)  opens K+ or Cl- channels 
C)  moves membrane potential away from threshold 
D)  short distance hyperpolarization 
A)  short distance depolarization 
B)  opens K+ or Cl- channels 
C)  moves membrane potential away from threshold 
D)  short distance hyperpolarization

Question 6

Axon diameter and degree of myelination determine nerve impulse conduction velocity.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is NOT a function of the autonomic nervous system?

Accepted Answer

A)  innervation of skeletal muscle 
B)  innervation of glands 
C)  innervation of smooth muscle of the digestive tract 
D)  innervation of cardiac muscle 
A)  innervation of skeletal muscle 
B)  innervation of glands 
C)  innervation of smooth muscle of the digestive tract 
D)  innervation of cardiac muscle

Question 8

Bipolar neurons are commonly _________.

Accepted Answer

A)  motor neurons 
B)  found in ganglia 
C)  called neuroglial cells 
D)  found in the retina of the eye 
A)  motor neurons 
B)  found in ganglia 
C)  called neuroglial cells 
D)  found in the retina of the eye

Question 9

Which of the following describes the nervous system integrative function?

Accepted Answer

A)  analyzes sensory information, stores information, makes decisions 
B)  responds to stimuli by gland secretion or muscle contraction 
C)  senses changes in the environment 
A)  analyzes sensory information, stores information, makes decisions 
B)  responds to stimuli by gland secretion or muscle contraction 
C)  senses changes in the environment

Question 10

The depolarization phase of an action potential is punctuated by the closing of inactivation gates in the voltage gated sodium ion channels. All of the following are consequences of this inactivation except one. Choose the statement below that is not a consequence of the closing of inactivating gates.

Accepted Answer

A)  This allows for the one way transmission of action potential down the axon. 
B)  This allows for the efflux (diffusion out) of potassium ions, resulting in the repolarization of the cell. 
C)  This limits the frequency of action potentials down the axon. 
D)  This stops the depolarization of the axon membrane. 
A)  This allows for the one way transmission of action potential down the axon. 
B)  This allows for the efflux (diffusion out) of potassium ions, resulting in the repolarization of the cell. 
C)  This limits the frequency of action potentials down the axon. 
D)  This stops the depolarization of the axon membrane.

Question 11

If a motor neuron in the body were stimulated by an electrode placed about midpoint along the length of the axon, _________.

Accepted Answer

A)  the impulse would move to the axon terminal only, and the muscle contraction would occur 
B)  the impulse would spread bidirectionally 
C)  muscle contraction would occur 
D)  the impulse would move to the axon terminal only 
A)  the impulse would move to the axon terminal only, and the muscle contraction would occur 
B)  the impulse would spread bidirectionally 
C)  muscle contraction would occur 
D)  the impulse would move to the axon terminal only

Question 12

Neuroglia found in the CNS that change the permeability of capillaries in the brain by binding to and surrounding these blood vessels are called_________ .

Accepted Answer

The answer of Neuroglia found in the CNS that change...

Question 13

What is the role of microglial cells and why are they so important in the CNS?

Accepted Answer

In the presence of invading microbes, mi

Question 14

Saltatory conduction is made possible by __________ .

Accepted Answer

A)  large nerve fibers 
B)  the myelin sheath 
C)  erratic transmission of nerve impulses 
D)  diphasic impulses 
A)  large nerve fibers 
B)  the myelin sheath 
C)  erratic transmission of nerve impulses 
D)  diphasic impulses

Question 15

The synapse more common in embryonic nervous tissue than in adults is the __________ .

Accepted Answer

The answer of The synapse more common in embryonic nervous...

Question 16

What symptoms would a nurse focus on in his or her care of a patient with multiple sclerosis?

Accepted Answer

Visual dis

Question 17

The effect of acetylcholine can be stimulating or inhibiting. Which of the following gives the best explanation for why this is so?

Accepted Answer

A)  Acetylcholine has a "dose effect." Larger doses are stimulating while small doses inhibit. 
B)  Postsynaptic cells have a dynamic and changing metabolism and respond differently at different times. 
C)  Acetylcholine has many different forms. 
D)  Different postsynaptic cells will have different receptors. 
A)  Acetylcholine has a "dose effect." Larger doses are stimulating while small doses inhibit. 
B)  Postsynaptic cells have a dynamic and changing metabolism and respond differently at different times. 
C)  Acetylcholine has many different forms. 
D)  Different postsynaptic cells will have different receptors.

Question 18

Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials?

Accepted Answer

A)  ligand-gated channel 
B)  leakage channel 
C)  voltage-gated channel 
D)  mechanically-gated channel 
A)  ligand-gated channel 
B)  leakage channel 
C)  voltage-gated channel 
D)  mechanically-gated channel

Question 19

If a postsynaptic neuron is stimulated to threshold by spatial summation this implies that _________.

Accepted Answer

A)  the postsynaptic cell has many synapses with many presynaptic neurons 
B)  the postsynaptic cell has many voltage gated ion channels 
C)  the postsynaptic cell has a lower than normal threshold 
D)  the postsynaptic cell is slow to repolarize 
A)  the postsynaptic cell has many synapses with many presynaptic neurons 
B)  the postsynaptic cell has many voltage gated ion channels 
C)  the postsynaptic cell has a lower than normal threshold 
D)  the postsynaptic cell is slow to repolarize

Question 20

Which group of neurotransmitters play a role in emotional behavior and help regulate the biological clock?

Accepted Answer

biogenic a

A neuron that has as its primary function the job of connecting other neurons is called a(n)_________.

Which of the following is NOT a characteristic of neurons?

An inhibitory postsynaptic potential (IPSP) is associated with_________ .

When a neurotransmitter like GABA is acting in an inhibitory manner which of the following is likely a result of the GABA acting on the postsynaptic cell?

Which of the following describes the excitatory postsynaptic potential?

Axon diameter and degree of myelination determine nerve impulse conduction velocity.

Which of the following is NOT a function of the autonomic nervous system?

Bipolar neurons are commonly _________.

Which of the following describes the nervous system integrative function?

If a motor neuron in the body were stimulated by an electrode placed about midpoint along the length of the axon, _________.

Neuroglia found in the CNS that change the permeability of capillaries in the brain by binding to and surrounding these blood vessels are called_________ .

What is the role of microglial cells and why are they so important in the CNS?

Saltatory conduction is made possible by __________ .

The synapse more common in embryonic nervous tissue than in adults is the __________ .

What symptoms would a nurse focus on in his or her care of a patient with multiple sclerosis?

The effect of acetylcholine can be stimulating or inhibiting. Which of the following gives the best explanation for why this is so?

Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials?

If a postsynaptic neuron is stimulated to threshold by spatial summation this implies that _________.

Which group of neurotransmitters play a role in emotional behavior and help regulate the biological clock?

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

Filters

Exam 11: Fundamentals of the Nervous System and Nervous Tissue

A neuron that has as its primary function the job of connecting other neurons is called a(n)_________.

Which of the following is NOT a characteristic of neurons?

An inhibitory postsynaptic potential (IPSP) is associated with_________ .

When a neurotransmitter like GABA is acting in an inhibitory manner which of the following is likely a result of the GABA acting on the postsynaptic cell?

Which of the following describes the excitatory postsynaptic potential?

Axon diameter and degree of myelination determine nerve impulse conduction velocity.

Which of the following is NOT a function of the autonomic nervous system?

Bipolar neurons are commonly _________.

Which of the following describes the nervous system integrative function?

If a motor neuron in the body were stimulated by an electrode placed about midpoint along the length of the axon, _________.

Neuroglia found in the CNS that change the permeability of capillaries in the brain by binding to and surrounding these blood vessels are called_________ .

What is the role of microglial cells and why are they so important in the CNS?

Saltatory conduction is made possible by __________ .

The synapse more common in embryonic nervous tissue than in adults is the __________ .

What symptoms would a nurse focus on in his or her care of a patient with multiple sclerosis?

The effect of acetylcholine can be stimulating or inhibiting. Which of the following gives the best explanation for why this is so?

Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials?

If a postsynaptic neuron is stimulated to threshold by spatial summation this implies that _________.

Which group of neurotransmitters play a role in emotional behavior and help regulate the biological clock?

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

Filters