NEUR532 Quiz exam prep Flashcards
A neuroscientist is investigating how different neural circuits in the brain analyze sensory information, form perceptions of the external world, make decisions, and execute movements. At what level of analysis is this research conducted? Choose the correct option.
Select one:
A.
Molecular neuroscience level
B.
Cellular neuroscience level
C.
Systems neuroscience level
D.
Cognitive neuroscience level
C.
Systems neuroscience level
At which level of analysis do neuroscientists study the different types of neurons and their functions? Choose the correct option.
Select one:
A.
Cellular neuroscience
B.
Cognitive neuroscience
C.
Molecular neuroscience
D.
Behavioral neuroscience
A.
Cellular neuroscience
On what basis did Broca defend functional localization of the brain? Choose the correct option.
Select one:
A.
By establishing a relationship between the production of speech and the right frontal lobe
B.
By establishing a relationship between the production of speech and the occipital lobe
C.
By establishing a relationship between the production of speech and the left frontal lobe
D.
By establishing a relationship between the production of speech and the cerebellum
C.
By establishing a relationship between the production of speech and the left frontal lobe
In the above diagram of the primary vesicles of the brain, the structure labelled c corresponds to the:
Select one:
A.
prosencephalon
B.
rhombencephalon
C.
diencephalon
D.
mesencephalon
E.
myelencephalon
B.
rhombencephalon
From which layer of the embryo does the nervous system develop?
Select one:
A.
ectoderm
B.
mesoderm
C.
endoderm
D.
the nervous system develops from tissue found outside the embryo
E.
the CNS and the PNS develop from different layers of the embryo
A.
ectoderm
During brain development, which major brain structure is formed from the rhombic lips?
Select one:
A.
pons
B.
cerebellum
C.
midbrain tectum
D.
medulla oblongata
E.
cerebrum
B.
cerebellum
The “neuron doctrine” of Cajal states that:
Select one:
A.
neurons are the only cells worthy of study
B.
all the cells in the brain are neurons
C.
neurons in the CNS are all connected together to form a syncytium
D.
the neuron is the functional unit of the nervous system
E.
neurons are the only excitable cells in the body
D.
the neuron is the functional unit of the nervous system
Oligodendrocytes and Schwann cells differ in that:
Select one:
A.
oligodendrocytes are myelinating glia, whereas Schwann cells are microglia
B.
one oligodendrocyte will surround only a single axon, whereas each Schwann cell is associated with several axons
C.
oligodendrocytes are found in the central nervous system, whereas Schwann cells are found in the peripheral nervous system
D.
oligodendrocytes form nodes of Ranvier, while Schwann cells do not
E.
oligodendrocytes can divide, but Schwann cells cannot
C.
oligodendrocytes are found in the central nervous system, whereas Schwann cells are found in the peripheral nervous system
Fast axoplasmic transport:
Select one:
A.
depends on passive diffusion of substances along the axon from the cell body
B.
occurs only in the anterograde direction
C.
occurs only in the retrograde direction
D.
depends on motor proteins moving along microtubules
E.
carries substances along the axon at a maximum speed of 1 mm per day
D.
depends on motor proteins moving along microtubules
When used to stain a sample of CNS tissue, the Golgi stain:
Select one:
A.
stains only the rough endoplasmic reticulum of neurons
B.
stains all neurons completely
C.
stains a small proportion of neurons completely
D.
stains the myelin sheaths of axons only
E.
does not stain neuroglial cells
C.
stains a small proportion of neurons completely
Concerning cutaneous plexuses, which of the following is correctly matched?
Select one:
a.
The Subcutaneous plexus lies within the densely collagenous reticular layer
b.
The Papillary plexus lies immediately beneath the epidermis
c.
Dermal plexus lies in the loose connective tissue deep to the skin
d.
No answers are correct
b.
The Papillary plexus lies immediately beneath the epidermis
Neuromuscular spindles have the following characteristics except:
Select one:
a.
They are about 6 mm long, and less than 1 mm in width
b.
They may contain up to 14 intrafusal muscle fibres
c.
They are innervated by sensory neurons only
d.
They function as a receptor for stretch reflex
c.
They are innervated by sensory neurons only
The following are examples of Free nerve endings in the subcutaneous tissue and dermis except:
Select one:
a.
Peritrichial ending
b.
Merkel endings
c.
Meissner s tactile corpuscle
d.
Plexuses
c.
Meissner s tactile corpuscle
The image shown is that of a:
Select one:
a.
Peritrichial ending
b.
Merkel ending
c.
Meissner s corpuscle
d.
Ruffini ending
d.
Ruffini ending
Which of the following concerning general sensory endings is correct?
Select one:
a.
Sensory endings are special structures, which act as biological transducers, in which chemical and or physical stimuli produce action potentials in nerve endings.
b.
The three types of sensory endings are Exteroceptive endings, Medioceptive endings and proprioceptive endings.
c.
Interioceptive endings are internally located in muscles, tendons and joints where they provide data for reflex adjustment.
d.
Propioceptive endings are superficially located.
a.
Sensory endings are special structures, which act as biological transducers, in which chemical and or physical stimuli produce action potentials in nerve endings.
Concerning the Medulla Oblongata, which of the following is not TRUE?
Select one:
a.
The medulla oblongata is about 9 cm long and it widens gradually in a caudal direction.
b.
It rests on the midline part of the occipital bone and is covered dorsally by the cerebellum.
c.
The rostral limit of the medulla is marked ventrally by a prominent sulcus
d.
The dorsal surface contains the caudal half of the fourth ventricle (also known as the open part)
e.
The caudal part of the medulla is called the closed part (this contains a continuation of the central canal of the spinal cord)
a.
The medulla oblongata is about 9 cm long and it widens gradually in a caudal direction.
Concerning the white matter, which of the following is incorrect?
Select one:
a.
The dorsal funiculus (posterior column) is bounded by the midline and the dorsal gray horn.
b.
The posterior column consists of a centrally placed cuneate fasciculus.
c.
There is no anatomical demarcation between the Lateral and ventral funiculi.
d.
It consists of partially overlapping bundles of fibres
b.
The posterior column consists of a centrally placed cuneate fasciculus.
The categories of neurons/nuclei in the spinal gray matter include the following except?
Select one:
a.
Motor cells of the ventral horn
b.
The cell bodies of tract cells, whose axons constitute the ascending fasciculi of the white matter (located mainly in the dorsal horn).
c.
Interneurons (even though many of them have quite long axons)
d.
Nuclei of the Cranial Nerves
d.
Nuclei of the Cranial Nerves
Which hole provides the principal communication between the ventricular system and the subarachnoid space?
Select one:
a.
Central canal
b.
Foramen of Luschka
c.
Foramen of Magendie
d.
Spinal canal
c.
Foramen of Magendie
Which of the following is not a characteristic description of the medial division of dorsal root fibres?
Select one:
a.
They consist of unmyelinated axons, including the rapidly conducting sensory fibres.
b.
They enter the spinal white matter medial to the dorsal horn where they divide into ascending and descending branches.
c.
The descending branches run caudally within the dorsal funiculi for varying distances and eventually terminate in the dorsal horn.
d.
Many of the ascending sensory fibres in the dorsal funiculus terminate in the gracile and cuneate nuclei in the medulla.
e.
Primary sensory axons conveying signals from muscle spindles have some branches that terminate on motor neurons and are involved in the stretch reflex.
a.
They consist of unmyelinated axons, including the rapidly conducting sensory fibres.
Cerebellar cortex ridges are called:
Select one:
a.
Tonsils
b.
Folia
c.
Vermis
d.
Lobes
b.
Folia
The major output of the cerebellar cortex to the deep cerebellar nuclei arise from the:
Select one:
a.
Basket cells
b.
Purkinje cells
c.
Granule cells
d.
Golgi cells
b.
Purkinje cells
What is the role of neurons in the deep cerebellar nuclei? Choose the correct option.
Select one:
a.
Relay information from cortex to the cerebellum
b.
Relay information from the cerebellum to various brain stem structures
c.
Relay sensory information to the cerebellum
d.
Relay motor information to the cerebellum
b.
Relay information from the cerebellum to various brain stem structures
Which of the following is (are) not a major part of the cerebellum?
Select one:
a.
Tegmentum
b.
Flocculonodular lobe
c.
Vermis
d.
Lateral hemispheres
a.
Tegmentum
