Question 1

The division of the nervous system that transmits electrical impulses towards cardiac muscle, smooth muscle and glands is the nervous system.

Accepted Answer

The answer of The division of the nervous system that...

Question 2

When repolarization of a neuron is complete, the

Accepted Answer

A)  neuron dies. 
B)  neuron regenerates. 
C)  cell no longer has a potential difference across its membrane. 
D)  original polarity of the neuron is restored. 
E)  neuron is no longer excitable. 
A)  neuron dies. 
B)  neuron regenerates. 
C)  cell no longer has a potential difference across its membrane. 
D)  original polarity of the neuron is restored. 
E)  neuron is no longer excitable.

Question 3

Rapid removal or destruction of neurotransmitter in the synaptic cleft

Accepted Answer

A)  may affect the ability of the postsynaptic membrane to generate action potentials. 
B)  generates local potentials in the presynaptic terminal. 
C)  is necessary for synaptic transmission. 
D)  may lead to action potentials. 
E)  may stop exocytosis. 
A)  may affect the ability of the postsynaptic membrane to generate action potentials. 
B)  generates local potentials in the presynaptic terminal. 
C)  is necessary for synaptic transmission. 
D)  may lead to action potentials. 
E)  may stop exocytosis.

Question 4

The junction of a neuron with another cell is a/an

Accepted Answer

A)  synapse. 
B)  ganglion. 
C)  receptor. 
D)  effector. 
A)  synapse. 
B)  ganglion. 
C)  receptor. 
D)  effector.

Question 5

Axons contain

Accepted Answer

A)  the trigger zone. 
B)  foot processes. 
C)  Nissl bodies. 
D)  the soma. 
E)  the rough endoplasmic reticulum. 
A)  the trigger zone. 
B)  foot processes. 
C)  Nissl bodies. 
D)  the soma. 
E)  the rough endoplasmic reticulum.

Question 6

Gaps or interruptions in the myelin sheath are called

Accepted Answer

A)  internodes. 
B)  tight junctions. 
C)  neurofilaments. 
D)  nodes of Ranvier. 
E)  gap junctions. 
A)  internodes. 
B)  tight junctions. 
C)  neurofilaments. 
D)  nodes of Ranvier. 
E)  gap junctions.

Question 7

A person who has seizures might have a deficit of which of the following?

Accepted Answer

A)  GABA 
B)  dopamine 
C)  glutamate 
D)  serotonin 
E)  histamine 
A)  GABA 
B)  dopamine 
C)  glutamate 
D)  serotonin 
E)  histamine

Question 8

Synaptic vesicles contain neurotransmitters and are present in the

Accepted Answer

A)  dendrites. 
B)  cell body. 
C)  axolemma. 
D)  presynaptic terminals. 
E)  trigger zone. 
A)  dendrites. 
B)  cell body. 
C)  axolemma. 
D)  presynaptic terminals. 
E)  trigger zone.

Question 9

For the resting membrane potential, increasing the sodium ion concentration in the ECF results in

Accepted Answer

A)  hyperpolarization. 
B)  depolarization. 
C)  hypopolarization. 
D)  little change in membrane potential. 
E)  There is not enough information to determine the results. 
A)  hyperpolarization. 
B)  depolarization. 
C)  hypopolarization. 
D)  little change in membrane potential. 
E)  There is not enough information to determine the results.

Question 10

____________ are processes that conduct electric signals toward the cell body.
dendrites

Accepted Answer

The answer of ____________ are processes that conduct electric signals...

Question 11

Neurons that have a single axon and a single dendrite are

Accepted Answer

A)  tripolar. 
B)  bipolar. 
C)  multipolar. 
D)  pseudo-unipolar. 
A)  tripolar. 
B)  bipolar. 
C)  multipolar. 
D)  pseudo-unipolar.

Question 12

Which of the following is NOT true of reactive astrocytosis?

Accepted Answer

A)  injury site is blocked off 
B)  scars limit regeneration 
C)  causes the spread of inflammation 
D)  reduces injury to surrounding tissue 
A)  injury site is blocked off 
B)  scars limit regeneration 
C)  causes the spread of inflammation 
D)  reduces injury to surrounding tissue

Question 13

A neuron that conducts pain sensations to the central nervous system would be classified as a(n)

Accepted Answer

A)  motor neuron. 
B)  sensory or afferent neuron. 
C)  efferent neuron. 
D)  association neuron. 
E)  interneuron. 
A)  motor neuron. 
B)  sensory or afferent neuron. 
C)  efferent neuron. 
D)  association neuron. 
E)  interneuron.

Question 14

Why isn't an action potential transmitted from a postsynaptic membrane to a presynaptic terminal?

Accepted Answer

A)  Presynaptic terminals have no acetylcholine receptors. 
B)  Presynaptic neurons do not have a resting membrane potential. 
C)  Acetylcholine can only diffuse in one direction across the synaptic cleft. 
D)  Synaptic vesicles in the postsynaptic membrane are inactive. 
E)  Acetylcholine is destroyed too fast. 
A)  Presynaptic terminals have no acetylcholine receptors. 
B)  Presynaptic neurons do not have a resting membrane potential. 
C)  Acetylcholine can only diffuse in one direction across the synaptic cleft. 
D)  Synaptic vesicles in the postsynaptic membrane are inactive. 
E)  Acetylcholine is destroyed too fast.

Question 15

If you cut bundles of axons and their myelin sheaths in the PNS, you cut

Accepted Answer

A)  ganglia. 
B)  nuclei. 
C)  nerves. 
D)  gray matter. 
E)  nerve tracts. 
A)  ganglia. 
B)  nuclei. 
C)  nerves. 
D)  gray matter. 
E)  nerve tracts.

Question 16

Receptor molecules

Accepted Answer

A)  are nonspecific. 
B)  are always lipids. 
C)  attach to the synaptic cleft. 
D)  determine whether a neurotransmitter will be excitatory or inhibitory. 
E)  are not attached to ligand-gated channels. 
A)  are nonspecific. 
B)  are always lipids. 
C)  attach to the synaptic cleft. 
D)  determine whether a neurotransmitter will be excitatory or inhibitory. 
E)  are not attached to ligand-gated channels.

Question 17

Sensory neurons carrying action potentials from pain receptors synapse within the spinal cord with interneurons. These interneurons synapse with motor neurons leading back to an effector and ascending neurons that carry action potentials toward the brain. This is an example of a(n) _____ pathway.

Accepted Answer

A)  convergent 
B)  divergent 
C)  reverberating 
D)  sensory 
E)  bifurcated 
A)  convergent 
B)  divergent 
C)  reverberating 
D)  sensory 
E)  bifurcated

Question 18

Dendrites

Accepted Answer

A)  are the input part of the neuron. 
B)  conduct action potentials away from the cell body. 
C)  are generally long and unbranched. 
D)  form synapses with the microglia. 
E)  contain the trigger zone. 
A)  are the input part of the neuron. 
B)  conduct action potentials away from the cell body. 
C)  are generally long and unbranched. 
D)  form synapses with the microglia. 
E)  contain the trigger zone.

Question 19

Match the neuroglial cell with its function.
-astrocytes

Accepted Answer

A) influence function of blood-brain barrier 
B) macrophages in CNS 
C) produce cerebrospinal fluid 
D) form myelin sheath around axons in CNS 
E) form myelin sheath around part of the axon in the PNS 
A) influence function of blood-brain barrier 
B) macrophages in CNS 
C) produce cerebrospinal fluid 
D) form myelin sheath around axons in CNS 
E) form myelin sheath around part of the axon in the PNS

Question 20

Chemical synapses are characterized by

Accepted Answer

A)  the release of neurotransmitter by the presynaptic terminal. 
B)  connexons that connect the pre- and postsynaptic cells. 
C)  the presence of receptors for neurotransmitters on the presynaptic terminal. 
D)  the absence of gap junctions. 
E)  receptors located only on the presynaptic terminal. 
A)  the release of neurotransmitter by the presynaptic terminal. 
B)  connexons that connect the pre- and postsynaptic cells. 
C)  the presence of receptors for neurotransmitters on the presynaptic terminal. 
D)  the absence of gap junctions. 
E)  receptors located only on the presynaptic terminal.

Exam 11: Functional Organization of Nervous Tissue

The division of the nervous system that transmits electrical impulses towards cardiac muscle, smooth muscle and glands is the nervous system.

When repolarization of a neuron is complete, the

Rapid removal or destruction of neurotransmitter in the synaptic cleft

The junction of a neuron with another cell is a/an

Axons contain

Gaps or interruptions in the myelin sheath are called

A person who has seizures might have a deficit of which of the following?

Synaptic vesicles contain neurotransmitters and are present in the

For the resting membrane potential, increasing the sodium ion concentration in the ECF results in

____________ are processes that conduct electric signals toward the cell body. dendrites

Neurons that have a single axon and a single dendrite are

Which of the following is NOT true of reactive astrocytosis?

A neuron that conducts pain sensations to the central nervous system would be classified as a(n)

Why isn't an action potential transmitted from a postsynaptic membrane to a presynaptic terminal?

If you cut bundles of axons and their myelin sheaths in the PNS, you cut

Receptor molecules

Sensory neurons carrying action potentials from pain receptors synapse within the spinal cord with interneurons. These interneurons synapse with motor neurons leading back to an effector and ascending neurons that carry action potentials toward the brain. This is an example of a(n) _____ pathway.

Dendrites

Match the neuroglial cell with its function. -astrocytes

Chemical synapses are characterized by

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolyte, and Acid-Based Balance

Reproductive System

Development, Growth, Aging, and Genetics

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