ANP 1106 - Anatomy Of The Nervous System I
Exam Questions With Verified Answers
What is the sensory division of the PNS? - ANSWER Somatic and visceral fibres
from receptors --> CNS
What is the motor division of the PNS? - ANSWER Motor nerve fibers from CNS --
> effectors
Differentiate between the Somatic Nervous System and Autonomic Nervous
System - ANSWER Somatic: voluntary; from CNS to smooth muscle
Autonomic: involuntary; from CNS to cardiac muscle, smooth muscle, and
glands (consist of sympathetic and parasympathetic divisions)
What are the two principle cell types of the nervous tissue?
What do they do? - ANSWER Neuroglia: small cells that surround and wrap
neurons
Nerve cells: excitable cells that transmit electrical signals
______________ cells in the CNS anchor neurons close to capillaries and play a
role in nutrient exchange, migration of young neurons, and cleaning the
environment?
A. Microglia
B. Oliodendrocytes
C. Astrocytes
D. Ependymal - ANSWER Astrocytes
____________ cells in the CNS monitors the well-being of neurons and can
transform into macrophages to engulf micro-organisms/cellular debris? -
ANSWER Microglial
________________ cells lines cavities of the brain/spinal cord and forms a
permeable barrier between cerebrospinal fluid and tissue fluid bathing CNS
cells - ANSWER Ependymal
_____________ cells processes wrap CNS fibres, forming insulating myelin
sheaths - ANSWER Oliodendrocyte
, ___________ cells surround neuron cell bodies in ganglia -- thought to do many of
the same things that astrocytes do in the CNS - ANSWER Satellite
__________ cells form myelin sheaths around LARGER neurons in PNS; vital to
peripheral nerve cell regeneration - ANSWER Schwann
Which of the following is NOT a characteristic of neurons?
A. Highly Permeable
B. Extreme Longevity
C. Amitotic
D. High Metabolic Rate - ANSWER A
The _________ is known as the impulse-generating and conducting region of the
neuron - ANSWER Axon
_________ are known as the main receptive or input regions of the neuron that
convey incoming messages toward the cell body - ANSWER Dendrites
What happens when impulses reach the axon terminal of a neuron? - ANSWER It
causes neurotransmitters to be released into extracellular space
Describe how neurons classified based on STRUCTURE (3) - ANSWER Unipolar:
one process extends from cell body to form central and peripheral processes
which comprise an axon
Bipolar: two processes extend from cell body; one is a dendrite, the other is an
axon
Multipolar: many processes extend from axon; all are dendrites except for a
single axon
Wha is the functional classification of neurons dependent on?
A. Size of nerve impulse
B. Number of processes that extend from cell body
C. Direction in which nerve impulses travels to CNS
D. None of the above - ANSWER C
What are sensory neurons? - ANSWER Neurons that carry impulses toward
CNS; almost all primary sensory neurons are unipolar (some bipolar)
What are motor neurons? - ANSWER Multipolar neurons that carry impulses
AWAY from CNS to effectors
Exam Questions With Verified Answers
What is the sensory division of the PNS? - ANSWER Somatic and visceral fibres
from receptors --> CNS
What is the motor division of the PNS? - ANSWER Motor nerve fibers from CNS --
> effectors
Differentiate between the Somatic Nervous System and Autonomic Nervous
System - ANSWER Somatic: voluntary; from CNS to smooth muscle
Autonomic: involuntary; from CNS to cardiac muscle, smooth muscle, and
glands (consist of sympathetic and parasympathetic divisions)
What are the two principle cell types of the nervous tissue?
What do they do? - ANSWER Neuroglia: small cells that surround and wrap
neurons
Nerve cells: excitable cells that transmit electrical signals
______________ cells in the CNS anchor neurons close to capillaries and play a
role in nutrient exchange, migration of young neurons, and cleaning the
environment?
A. Microglia
B. Oliodendrocytes
C. Astrocytes
D. Ependymal - ANSWER Astrocytes
____________ cells in the CNS monitors the well-being of neurons and can
transform into macrophages to engulf micro-organisms/cellular debris? -
ANSWER Microglial
________________ cells lines cavities of the brain/spinal cord and forms a
permeable barrier between cerebrospinal fluid and tissue fluid bathing CNS
cells - ANSWER Ependymal
_____________ cells processes wrap CNS fibres, forming insulating myelin
sheaths - ANSWER Oliodendrocyte
, ___________ cells surround neuron cell bodies in ganglia -- thought to do many of
the same things that astrocytes do in the CNS - ANSWER Satellite
__________ cells form myelin sheaths around LARGER neurons in PNS; vital to
peripheral nerve cell regeneration - ANSWER Schwann
Which of the following is NOT a characteristic of neurons?
A. Highly Permeable
B. Extreme Longevity
C. Amitotic
D. High Metabolic Rate - ANSWER A
The _________ is known as the impulse-generating and conducting region of the
neuron - ANSWER Axon
_________ are known as the main receptive or input regions of the neuron that
convey incoming messages toward the cell body - ANSWER Dendrites
What happens when impulses reach the axon terminal of a neuron? - ANSWER It
causes neurotransmitters to be released into extracellular space
Describe how neurons classified based on STRUCTURE (3) - ANSWER Unipolar:
one process extends from cell body to form central and peripheral processes
which comprise an axon
Bipolar: two processes extend from cell body; one is a dendrite, the other is an
axon
Multipolar: many processes extend from axon; all are dendrites except for a
single axon
Wha is the functional classification of neurons dependent on?
A. Size of nerve impulse
B. Number of processes that extend from cell body
C. Direction in which nerve impulses travels to CNS
D. None of the above - ANSWER C
What are sensory neurons? - ANSWER Neurons that carry impulses toward
CNS; almost all primary sensory neurons are unipolar (some bipolar)
What are motor neurons? - ANSWER Multipolar neurons that carry impulses
AWAY from CNS to effectors
