BIO 201 Exam 4 / latest exam questions and
answers
In multiple sclerosis, the cells that are the target of an autoimmune attack are the _________.
-neurons
-muscle cells
-Schwann cells
-oligodendrocytes - answer oligodendrocytes
Which mechanism allows the rabies virus to gain access to the central nervous system (CNS)?
-Rabies virus moves through the blood vessels to the CNS.
-The rabies virus uses retrograde movement along the neuronal axon. -The rabies virus uses
anterograde along the neuronal axon.
-The rabies virus enters the Schwann cells of the peripheral nervous system and uses salutatory
movement to move toward the CNS. - answer the rabies virus uses retrograde movement along the
neuronal axon
People with multiple sclerosis (MS) experience many challenging symptoms. Which statement best
explains one cause of these difficulties?
-Damage to ependymal cells results in stagnation of cerebrospinal fluid, damaging neurons.
-A loss of astrocytes causes leaked neurotransmitters and K+ to accumulate, impairing generation of
action potentials.
-Loss of oligodendrocytes in the central nervous system results in absence of the myelin sheath of
neuronal axons, impairing rapid saltatory conduction.
-An increase in the number of oligodendrocytes in the central nervous system results in an overgrowth
of the myelin sheath of neuronal axons, resulting in abnormally large action potentials. - answer Loss of
oligodendrocytes in the central nervous system results in absence of the myelin sheath of neuronal
axons, impairing rapid saltatory conduction
People who have hydrocephaly often have an issue with which of these glial cell types?
-Oligodendrocytes
-Ependymal cells
,-Astrocytes
-Microglia - answer Ependymal cells
What division of the nervous system is most specifically responsible for voluntary motor control?
-parasympathetic nervous system
-somatic nervous system
-sympathetic nervous system
-central nervous system - answer somatic nervous system
Which of the following is NOT one of the basic functions of the nervous system?
-Integrate sensory input for decision making.
-Release hormones into the bloodstream that travel around the systemic blood circulation to
communicate with cells in multiple locations within the body.
-Generate direct, electrical signals.
-Decode sensory information from the environment. - answer Release hormones into the bloodstream
that travel around the systemic blood circulation to communicate with cells in multiple locations within
the body
The term central nervous system refers to the ________.
-spinal nerves
-somatic nerves
-sensory (afferent) nerves
-brain and spinal cord - answer brain and spinal cord
A neuron that has as its primary function the job of connecting other neurons is called a(n) ________.
-efferent neuron
-glial cell
-afferent neuron
-interneuron - answer interneuron
,Which of the following is NOT a function of the autonomic nervous system?
-innervation of glands
-innervation of skeletal muscle
-innervation of cardiac muscle
-innervation of smooth muscle of the digestive tract - answer innervation of skeletal muscle
Which of the following is NOT a characteristic of neurons?
-They are mitotic.
-They conduct impulses.
-They have an exceptionally high metabolic rate.
-They have extreme longevity. - answer They are mitotic
Which of the following describes the nervous system integrative function?
-senses changes in the environment
-analyzes sensory information, stores information, makes decisions -responds to stimuli by gland
secretion or muscle contraction - answer analyzes sensory information, stores information, makes
decisions
Cranial nerve II, the optic nerve, sends nerve impulses to the brain carrying information about the things
we see. These nerve fibers most likely belong to which division of the nervous system?
-sensory (afferent) division
-somatic nervous system
-sympathetic division
-parasympathetic division - answer sensory (afferent) division
Nerve impulses leading to the skeletal muscle carry information to direct movement. The nerve fibers
sending these signals will most likely belong to which division of the nervous system?
-sensory (afferent) division
-somatic nervous system
-sympathetic division
, -parasympathetic division - answer somatic nervous system
Nerve impulses leading to the brain carry information about cool temperatures on the skin. The nerve
fibers sending these signals will most likely belong to which division of the nervous system?
-sensory (afferent) division
-somatic nervous system
-sympathetic division
-parasympathetic division - answer sensory (afferent) division
Nerve impulses are sent to slow the heart's rate of contraction. The nerve fibers sending these signals
will most likely belong to which division of the nervous system?
-sensory (afferent) division
-somatic nervous system
-sympathetic division
-parasympathetic division - answer parasympathetic division
As you start working out, you notice that your heart rate and breathing rate start to increase. Which
division of your nervous system is generating this response? Be as specific as possible.
-the sympathetic division of the autonomic nervous system
-the parasympathetic division of the autonomic nervous system
-the afferent division of the nervous system
-the somatic nervous system - answer the sympathetic division of the autonomic nervous system
Which glial cells have the most diversity of function?
-Schwann cells
-oligodendrocytes
-ependymal cells
-astrocytes - answer astrocytes
answers
In multiple sclerosis, the cells that are the target of an autoimmune attack are the _________.
-neurons
-muscle cells
-Schwann cells
-oligodendrocytes - answer oligodendrocytes
Which mechanism allows the rabies virus to gain access to the central nervous system (CNS)?
-Rabies virus moves through the blood vessels to the CNS.
-The rabies virus uses retrograde movement along the neuronal axon. -The rabies virus uses
anterograde along the neuronal axon.
-The rabies virus enters the Schwann cells of the peripheral nervous system and uses salutatory
movement to move toward the CNS. - answer the rabies virus uses retrograde movement along the
neuronal axon
People with multiple sclerosis (MS) experience many challenging symptoms. Which statement best
explains one cause of these difficulties?
-Damage to ependymal cells results in stagnation of cerebrospinal fluid, damaging neurons.
-A loss of astrocytes causes leaked neurotransmitters and K+ to accumulate, impairing generation of
action potentials.
-Loss of oligodendrocytes in the central nervous system results in absence of the myelin sheath of
neuronal axons, impairing rapid saltatory conduction.
-An increase in the number of oligodendrocytes in the central nervous system results in an overgrowth
of the myelin sheath of neuronal axons, resulting in abnormally large action potentials. - answer Loss of
oligodendrocytes in the central nervous system results in absence of the myelin sheath of neuronal
axons, impairing rapid saltatory conduction
People who have hydrocephaly often have an issue with which of these glial cell types?
-Oligodendrocytes
-Ependymal cells
,-Astrocytes
-Microglia - answer Ependymal cells
What division of the nervous system is most specifically responsible for voluntary motor control?
-parasympathetic nervous system
-somatic nervous system
-sympathetic nervous system
-central nervous system - answer somatic nervous system
Which of the following is NOT one of the basic functions of the nervous system?
-Integrate sensory input for decision making.
-Release hormones into the bloodstream that travel around the systemic blood circulation to
communicate with cells in multiple locations within the body.
-Generate direct, electrical signals.
-Decode sensory information from the environment. - answer Release hormones into the bloodstream
that travel around the systemic blood circulation to communicate with cells in multiple locations within
the body
The term central nervous system refers to the ________.
-spinal nerves
-somatic nerves
-sensory (afferent) nerves
-brain and spinal cord - answer brain and spinal cord
A neuron that has as its primary function the job of connecting other neurons is called a(n) ________.
-efferent neuron
-glial cell
-afferent neuron
-interneuron - answer interneuron
,Which of the following is NOT a function of the autonomic nervous system?
-innervation of glands
-innervation of skeletal muscle
-innervation of cardiac muscle
-innervation of smooth muscle of the digestive tract - answer innervation of skeletal muscle
Which of the following is NOT a characteristic of neurons?
-They are mitotic.
-They conduct impulses.
-They have an exceptionally high metabolic rate.
-They have extreme longevity. - answer They are mitotic
Which of the following describes the nervous system integrative function?
-senses changes in the environment
-analyzes sensory information, stores information, makes decisions -responds to stimuli by gland
secretion or muscle contraction - answer analyzes sensory information, stores information, makes
decisions
Cranial nerve II, the optic nerve, sends nerve impulses to the brain carrying information about the things
we see. These nerve fibers most likely belong to which division of the nervous system?
-sensory (afferent) division
-somatic nervous system
-sympathetic division
-parasympathetic division - answer sensory (afferent) division
Nerve impulses leading to the skeletal muscle carry information to direct movement. The nerve fibers
sending these signals will most likely belong to which division of the nervous system?
-sensory (afferent) division
-somatic nervous system
-sympathetic division
, -parasympathetic division - answer somatic nervous system
Nerve impulses leading to the brain carry information about cool temperatures on the skin. The nerve
fibers sending these signals will most likely belong to which division of the nervous system?
-sensory (afferent) division
-somatic nervous system
-sympathetic division
-parasympathetic division - answer sensory (afferent) division
Nerve impulses are sent to slow the heart's rate of contraction. The nerve fibers sending these signals
will most likely belong to which division of the nervous system?
-sensory (afferent) division
-somatic nervous system
-sympathetic division
-parasympathetic division - answer parasympathetic division
As you start working out, you notice that your heart rate and breathing rate start to increase. Which
division of your nervous system is generating this response? Be as specific as possible.
-the sympathetic division of the autonomic nervous system
-the parasympathetic division of the autonomic nervous system
-the afferent division of the nervous system
-the somatic nervous system - answer the sympathetic division of the autonomic nervous system
Which glial cells have the most diversity of function?
-Schwann cells
-oligodendrocytes
-ependymal cells
-astrocytes - answer astrocytes
