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156 questions
The telencephalon gives rise to the:
Cerebrum
Cerebellum
Chiasma
Rhinencephalon
The landmark shaded in grey is known as the:
Sylvian gyrus
Ectosylvian gyrus
Pseudosylvian fissure
Suprasylvian gyrus
Which cerebral lobe cannot be seen from a dorsolateral view?
Piriform
Parietal
Occipital
Temporal
The somesthetic cortical area is responsible for:
Motor function
Auditory function
Sensory function
Olfactory function
The visual cortical area contains which structure?
Postcruciate Gyrus
Ectosylvian Gyrus
Suprasylvian Gyrus
Occipital Gyrus
Which cortical lobe does not contain a primary cortical area?
Temporal
Frontal
Parietal
Occipital
The Rhinencephalon is derived from the _________.
Telencephalon
Diencephalon
Mesencephalon
Metencephalon
White matter contains all of the following EXCEPT:
Dendrites
Axons
Glia
Capillaries
Which color dot is placed on the Caudate portion of the Basal Nuclei?
Red
Pink
Purple
Yellow
_____________ connects the function areas of the right and left hemispheres of the brain.
Corpus Callosum
Internal Capsule
Cerebellum
Meninges
The Internal Capsule carries information to and from the ___________.
Cerebrum
Cerebellum
Optic Chiasm
Olfactory lobes
Capillaries are found in the ___________ layer of the meninges.
Dura mater
Pia mater
Arachnoid
The area of meninges highlighted in yellow is known as the ____________.
Falx cerebri
Tentorium cerebelli
Dorsal sagittal sinus
Arachnoid villus
The area of meninges shaded with green is known as what?
Falx cerebri
Tentorium cerebelli
Dorsal sagittal sinus
Arachnoid villus
Where is the origin of the olfactory tract?
Olfactory cells of olfactory epithelium
Olfactory bulb
Piriform lobe
Chiasm
Signals must go through the _____________ to get to the cerebral cortex.
Cerebellum
Thalamus
Piriform lobe
Hypophysis
Visual information passes through the __________ geniculate nucleus of the thalmus to get to the cerebral cortex.
Lateral
Medial
Dorsal
Ventral
The epithalmus (pineal gland) releases what neurotransmitter?
Acetylcholine
Serotonin
Melatonin
Dopamine
What structure is shaded in sky blue?
Pineal gland
Hypophysis
Hypothalamus
Which structure is shaded in green?
Pineal gland
Hypothalamus
Hypophysis
Which structure is circled in orange?
Pineal gland
Hypothalamus
Hypophysis
Optic nerve fibers that do not cross sides at the optic chiasm are called _________.
Contralateral
Ipsilateral
Where does visual information originate?
Tapetum lucidum
Lens
Retina
Cornea
Test in which light is directed at the eye, causing the pupils to constrict.
Pupillary light reflex
Menace test
Visual reflex
The midbrain originates from what structure?
Mesencephalon
Metencephalon
Diencephalon
Myelencephalon
The pons and cerebellum originate from which structure?
Mesencephalon
Metencephalon
Myelencephalon
Diencephalon
What structure of the dorsal midbrain is responsible for pupillary dilation?
Rostral colliculus
Caudal colliculus
Trochlear nerve
Crus cerebri
Which structure of the dorsal midbrain is responsible for the startle reflex (auditory)?
Rostral colliculus
Caudal colliculus
Trochlear nerve
Crus cerebri
Where are the cerebral motor tracts located in the midbrain?
Rostral colliculus
Caudal colliculus
Crus cerebri
Pons
The Pons gives rise to nerve _______.
III
IV
V
VI
Which of the following are functions of the reticular formation?
Consciousness
Micturition
Swallowing
Vomiting
Hearing
Which structures are labeled in orange?
Pyramids
Piriform lobes
Trapezoid bodies
Cerebellar peduncles
What is the name of the structure circled in pink?
Pyramid
Trapezoid body
Cerebellar peduncle
Piriform lobe
Which structure is circled in green?
Hippocampal formation
Fourth ventricle
Fasciculus cuneatus
Thalamus
Which structure is circled in orange?
Hippocampal formation
Thalamus
Fourth ventricle
Fasciculus cuneatus
Which structure is circled in purple?
Fasciculus cuneatus
Spinal tract of trigeminal (V)
Fourth ventricle
Thalamus
What is the structure circled in orange?
Flocculus
Nodulus
Flocculonodular peduncle
Vermis
Identify the structure circled in green.
Vermis
Flocculus
Flocculonodular peduncle
Nodulus
Identify the structure circled in blue.
Vermis
Flocculus
Flocculonodular peduncle
Nodulus
Identify the structure circled in purple.
Vermis
Flocculus
Cerebellar hemisphere
Cerebral hemisphere
Identify the general term used to describe dorsal to the dotted red line.
Tectum
Tegmentum
Central canal
Basilar pons
Identify the general term used to describe ventral to the dotted red line.
Tectum
Tegmentum
Central canal
Basilar pons
Identify the structure circled in purple.
Tectum
Tegmentum
Medial geniculate nucleus
Lateral geniculate nucleus
Identify the structure circled in orange.
Cerebral aqueduct
Choroid plexus
Medial geniculate nucleus
Lateral geniculate nucleus
Identify the structure circled in purple.
Caudal colliculus
Rostral colliculus
Thalamus
Cerebellar peduncles
What structure is the blue arrow pointing to?
Thalamus
Lateral ventricle
Caudate nucleus
Corpus callosum
Identify the structure shaded in green.
Vermis
Hypothalamus
Caudate nucleus
Thalamus
Identify the structure shaded in green.
Tectum
Cerebellar hemisphere
Hypophysis
Basilar pons
Identify the structure circled in green.
Tectum
Tegmentum
Basilar pons
Thalamus
Identify the structure circled in orange. (Choose the structure that is most circled by it)
Hypothalamus
Thalamus
Corpus callosum
Hypophysis
Identify the structure circled in purple.
Thalamus
Internal capsule
Rostral commisure
Corpus callosum
Which of the following Midbrain structures are visible from the Dorsal aspect?
Rostral Colliculus
Tectum
Tegmentum
Caudal Colliculus
Which of the following structures is located within the Tegmentum of the Midbrain
Crus cerebrii
Substantia nigra
Reticular formation
Descending cerebral motor tract
A patient presents with extorsion of the right eye. Where is the lesion located?
Right trochlear nerve
Left trochlear nerve
Right oculomotor nerve
Left oculomotor nerve
Which brain stem structure does NOT contain a nuclei responsible for voluntary eye movement?
Midbrain
Pons
Medulla Oblongata
Which part of the motor system is classified as having dopaminergic neurons?
Substantia nigra
Crus cerebrii
Pyramid
Internal capsule
What view is this and what is the structure the arrow is pointing at?
Dorsal, Oculomotor nerve
Ventral, Trochlear nerve
Ventral, Oculomotor nerve
Dorsal, Trochlear nerve
Inability for a patient to track an object laterally could be due to a lesion on what cranial nerves?
CN III
CN IV
CN V
CN VI
The Rostral and Caudal Colliculi both use this motor tract during the visual and auditory reflex, respectively, to move the neck muscles as a reaction.
Crus cerebrii
Tectospinal tract
Substantia nigra
Pyramid
Which muscles are innervated by CN III?
Dorsal rectus
Lateral rectus
Pupilary sphincter
Levator palpebral
Dorsal oblique
Identify the circled structure
Basilar Pons
Cerebellar peduncles
Crus cerebrii
Pyramid
Describe the location of the Tegmentum of the Pons
ventral to the Basilar Pons
ventral to the Tectum of the Pons
Dorsal to the fourth ventricle
Ventral to the fourth ventricle
The Pons is responsible for which sensory stimuli of the Trigeminal nerve?
Touch
Pain
Temperature
Proprioception
Vibration
Identify the structures circled in blue and red, respectively.
Pontine sensory nucleus of V, Motor Nucleus of V
Pontine sensory nucleus of V, Nucleus of the mesencephalic tract V
Nucleus of the mesencephalic tract V, Nucleus of the spinal tract V
A central lesion to the Pons will manifest as what symptoms?
Coma
Paresis/Paralysis
Motor and sensory deficits to the body
Loss of pain, proprioception, etc.
Where is the lesion located?
Left Facial nerve
Right Facial nerve
Left Trigeminal nerve
Right Trigeminal nerve
What is affected if the Basilar Pons is damaged?
Sensory from the body
Visceromotor centers
Conscious body movement
How many nerves pass through the Orbital fissure?
1
2
3
4
Which two foramen make up the facial canal?
Round foramen and oval foramen
Internal acoustic meatus and external acoustic meatus
Internal acoustic meatus and stylomastoid foramen
Oval foramen and Jugular foramen
Identify the blue structure
CN V
CN VI
CN VII
CN VIII
Identify the red structure
CN V
CN VI
CN VII
CN VIII
Identify the black structure
CN V
CN VI
CN VII
CN IX
Which of the following is the correct reflex circuit for the Corneal reflex?
CN V1 -> pontine sensory nucleus of V -> motor nucleus of VII -> CN VII -> orbicularis oculi m.
CN V1 -> pontine sensory nucleus of V -> nucleus of the spinal tract of V -> motor nucleus of VI -> CN VI -> retractor bulbi m.
If an animal can blink spontaneously, yet has no palpebral reflex, where is the problem?
CN V1
CN V2
CN V3
CN VII
A dog was hit by a car over a year ago, now its tongue deviates right. Where is the lesion?
Right Hypoglossal nerve
Left Hypoglossal nerve
Right Mandibular nerve (CN V3)
Left Mandibular nerve (CN V3)
A horse exhibits no response to a palpebral reflex. Where could the lesion be?
CN III
CN V
CN VII
Motor nucleus of V
Identify the stricture highlighted in green
Fasciculus cuneatus
Spinal tract of V
Trapezoid body
Pyramid
Identify the structure highlighted in blue
Fasciculus cuneatus
Spinal tract of V
Trapezoid body
Pyramid
What makes up the Fasciculus cuneatus?
A bunch on nuclei
Descending motor tract
Ascending sensory tract
Descending sensory tract
What stimuli does the spinal tract of V deliver and what is its target nucleus
Motor, Motor nucleus of V
Pain and temperature, pontine sensory nucleus of V
touch and pressure, nucleus of spinal tract of V
Pain and temperature, nucleus of spinal tract of V
Identify the circled structure
Pyramid
Trapezoid body
Pyramidal decussation
Fasciculus cuneatus
If a lesion was present on the left Pyramid, what symptoms might you see?
Sensory deficit of the left side
Sensory deficit of the right side
Motor deficit of the left side
Motor deficit of the right side
Which cranial nerves have at least one nuclei located in the Medulla Oblongata?
CN VI-XII
CN V-XII
CN III, IV, VI, VII, XI, XII
All of them
Which of the following are nuclei associated with the Facial nerve?
Motor nucleus of VII
Parasympathetic nucleus of VII
Sympathetic nucleus of VII
Nucleus of the solitary tract
If a patient has a positive palpebral reflex, positive pupilary light reflex, and a negative corneal reflex. Where is the lesion?
CN III
CN IV
CN V
CN VI
CN VII
When the fibers of the cochlear nerve move dorsally, they are referred to as _______.
Acoustic stria
Fibers of the trapezoid body
Fibers of the pyramid
True or false: the cochlear portion of the vestibulocochlear nerve are known for their function in eye movement in response to changes in head position.
True
False
The information from the cochlear nuclei is passed to two structures, the _________ and __________.
Lateral geniculate nucleus and caudal colliculus
Medial geniculate nucleus and rostral colliculus
Medical geniculate nucleus and caudal colliculus
Lateral geniculate nucleus and rostral colliculus
What carries auditory information to the MGN and caudal colliculus?
Acoustic stria
Fibers of the trapezoid body
Lateral lemniscus
Which tract of the vestibular nuclei controls the extraocular muscles of the eye?
Medial longitudinal fasciculus
Vestibulospinal tract
If you have a lesion on your right vestibular nerve, which side is more active and which direction will you circle toward?
Left and you'll circle toward the right
Right and you'll circle toward the left
Left and you'll circle toward the left
Right and you'll circle toward the right
If you have a lesion on your right side vestibular nerve, which direction are your eyes moving during the quick phase?
Left
Right
Which structure is outlined in green?
4th ventricle
Cerebral aqueduct
3rd ventricle
Lateral ventricle
Which structure is outlined in blue?
4th ventricle
Cerebral aqueduct
3rd ventricle
Lateral ventricle
Which structure is outlined in pink?
4th ventricle
Cerebral aqueduct
3rd ventricle
Lateral ventricle
Which structure is outlined in purple?
4th ventricle
Cerebral aqueduct
3rd ventricle
Lateral ventricle
Which ventricle partly surrounds the caudate nucleus? (Highlighted in purple)
Lateral ventricle
4th ventricle
3rd ventricle
Left ventricle
What structure is circled in blue?
3rd ventricle
Lateral ventricle
4th ventricle
5th ventricle
What structure is pointed to in the fourth ventricle?
Some cool cells
Glial cells
Choroid plexus
CSF
What structure is circled in pink? (slide is an adult medulla oblongata)
Nerve XII
Nerve X
Nerve VII
Nerve V
What structure is circled in orange? (slide is an adult medulla oblongata)
Cerebral hemisphere
Cerebellum
Hypothalamus
Hypophysis
What structure is circled in green? (slide is an adult medulla oblongata)
Choroid plexus
Cerebellum
Pyramid
Motor nucleus of XII
What structure is pointed to in purple? (slide is an adult medulla oblongata)
Choroid plexus
Cerebellum
Pyramid
Motor nucleus of XII
True or false: ependymal cells with tight junctions line the inner surface of the ventricles.
True
False
Which structures contain a choroid plexus?
Lateral ventricle
Third ventricle
Cerebral aqueduct
Fourth ventricle
What is the main difference between severe cerebral edema of a young animal compared to a mature one?
Its not as serious, because they're still growing
You will see a physical difference in head size/shape
Pressure atrophy occurs at a decreased rate
The CSF circulation is different in growing animals
What structures protect the cerebellum in cases of severe cerebral edema?
Falx cerebri
Fourth ventricle
Tentorium cerebelli
Tentorium ossium
Which two nuclei are heavily involved in the swallowing reflex?
Parasympathetic nucleus of IX, Motor nucleus of V
Parasympathetic nucleus of X, Nucleus Ambiguus
Nucleus of the solitary tract, Motor nucleus of V
Nucleus of the solitary tract, Nucleus Ambiguus
Which cranial nerves are involved with the swallowing reflex?
CN IX
CN X
CN XI
CN XII
What needs to be involved in a "reflex"?
Communication with the Cerebral cortex
Motor component
Sensory component
Conscious thought
Identify the structure labelled "2"
Lateral aperture
Cerebral aqueduct
Interventricular foramen
Dorsal sagittal sinus
Where is the division between spinal cord segments?
at the spinal nerves
every other spinal nerve
just cranial to each spinal nerve
just caudal to each spinal nerve
What is the Cauda Equina?
the tail of a horse
The cranial most portion of the spinal cord
Where the spinal cord stops, but the spinal nerves continue caudally
the caudal most portion of the spinal cord
Which of these structures are directly attached to the spinal nerves?
Dorsal root
Ventral root
Sympathetic trunk
Spinal cord
Which sections of the spinal cord would you find the Cervical and Lumbosacral Enlargements?
C1-C5
C6-T1(2)
T2(3)-L3
L4-S1(2)
Which of the following is NOT a structure visible from a transverse section of the spinal cord?
Dorsal median sulcus
Dorsolateral sulcus
Ventrolateral sulcus
Ventral median fissure
Dorsal median septum
Which of these structures consist of grey matter?
Ventral horn
Ventral funiculus
Dorsal funiculus
Intermediate substance
Which structures of the spinal cord contain both sensory and motor tracts?
Dorsal funiculus
Lateral funiculus
Ventral horn
Ventral funiculus
T/F: Glia can be found in both white and grey mater.
True
False
What type of nuclei will you find in the Dorsal and ventral horns, respectively?
Sensory, Motor
Motor, Sensory
Both, Sensory
Motor, Both
Both, Both
Identify the structure labeled 6
Lateral funiculus
Dorsal horn
Ventral horn
Intermediate substance
What are the basic functions of the spinal cord?
Mediate sensory signals
Mediate spinal reflexes
Mediate motor signals
Dont pick this answer
The ventral root is made up of what kind of neurons?
Unipolar
Bipolar
Multipolar
If an axon is injured somewhere away from the neuron soma, where will degradation take place?
at the site of injury
proximal axon and soma
distal axon
the entire neuron
Which of the following contain a touch modality?
Free nerve ending
hair follicle terminal
Merkel's corpuscle
Meissner's corpuscle
Where would you find free nerve endings
Epidermis
Dermis
Between Epidermis and Dermis
What sensory receptors would you find at the junction between the Epidermis and Dermis?
free nerve endings
Meissner's corpuscle
Merkel's corpuscle
hair follicle terminal
Dorsal horn nucleus and Lateral cervical nucleus both mediate what modalities?
Vibration
Touch
Temperature
Pain
Proprioception
A dog has a lesion on the left spinal cord. If a pain stimulus is given to the right leg, which tract will it use to reach the thalamus?
Spinocervicothalamic tract
Spinothalamic tract
Where are the spinocervicothalamic and spinothalamic tracts located?
Dorsal funiculus
Lateral funiculus
Ventral funiculus
What modalities does the spinothalamic tract have that the spinocervicothalamic tract not have?
Somaitc Pain
Touch
Temperature
Visceral pain
T/F: Only the spinothalamic tract synapses at the Lateral cervical nucleus.
True
False
Which of the following associations are INCORRECT?
Muscle spindle, length of muscle fiber
Golgi tendon organ, muscle tension
Pacinian corpuscle, joint movement
Ruffini's corpuscle, muscle tension
Where are muscle spindle receptors located in the muscle?
Within the muscle cells
Within the Endomysium
Within the Perimysium
Within the Epimysium
T/F: conscious proprioception is the sensation of body movement and position.
True
False
T/F: Subconscious proprioception is the synchronization of cortical motor outputs and muscular responses for smooth execution of movements.
True
False
Where is the Nucleus thoracicus located?
Ventral horn, T1-L4
Dorsal horn, T1-L4
Ventral horn, C6-T1
Dorsal horn, C6-T1
Where would you find primary sensory neurons?
Ventral root
Spinomedulary tract
Cerebrum
Dorsal root
T/F: the proprioceptive positioning test evaluates subconscious proprioception.
True
False
Which tracts are located in the dorsal funiculus?
Fasiculus cuneatus
spinomedullary tract
Spinothalamic tract
spinocuneocerebellar tract
spinocervicothalamic tract
What modalities go through the nucleus cuneatus?
Pain
Touch
Proprioception
Temperature
After the corticospinal tract runs through the Pyrimidal decussation, the majority of motor neurons run in which tract?
Lateral corticospinal tract
Ventral corticospinal tract
T/F: more motor fibers from the corticospinal tract terminate in the Lumbosacral segments than any other segment.
True
False
Which of the following are Excitatory neurotransmitters?
Acetylcholine
GABA
Glutemate
Glycine
Which of the following is the neurotransmitter used by Renshaw cells?
Acetylcholine
GABA
Glutemate
Glycine
Which most accurately describes the effect of Tetanus toxin?
Overstimulates exitatory neurons
Overstimulates inhibitory neurons
Prevents action of exitatory neurons
Prevents action of inhibitory neurons
T/F: Alpha motor neurons innervate smooth and cardiac muscle.
True
False
Where would you expect more motor units to be found?
Quadriceps muscle (more contractile force)
Extraocular muscles (fine movements required)
T/F: Lower motor neurons are under the control of upper motor neurons, and directly innervate muscles.
True
False
What are the components of a Myotactic reflex?
induction by stretching the muscle/tapping the tendon
Reflex circut
monosynaptic
polysynaptic
What receptor(s) is being activated in the Quadriceps reflex?
Muscle spindle
Pacinian corpuscle
Ruffini's corpuscle
Golgi tendon organ
What is the difference between monosynaptic and polysynaptic reflexes?
Presence of interneurons
conscious movement involved
neurotransmitters used
What position must the animal be in for the crossed extensor thrust reflex test to be conducted properly?
Lateral recumbency
Dorsal recumbency
Standing
Sternal recumbency
The Quadriceps reflex involves the Femoral nerve, which arises from what cord segments?
L2-4
L3-5
L4-6
L5-7
Which two nerves, arising from S1-3 and Caudal cord segments, mediate the Perineal reflex?
Pudendal nerve
Femoral nerve
Sciatic nerve
Caudal nerve
A dog is presented with paralysis of a hind leg. The muscle is begining to atrophy, yet a Quadriceps reflex is present and the affected limb has muscle tone. What is your diagnosis?
Upper motor neuron disease
Lower motor neuron disease
He's faking it!
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