Test
Neurophysiology 9-12
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Preguntas del test (40)
1Which has a wider peripheral vision?
- Abinocular vision in dogs
- Bmonocular vision in dogs
- Cbinocular vision in humans
- Dmonocular vision in humans
2What causes the "eye-shine"
- ALens
- Bchoroid
- Cpupil
- Dtapetun lucidum
3What is the word for dilation of the pupil and what does it do?
- AMiosis; makes the pupil smaller
- BMiosis; makes the pupil bigger
- CMydriasis; makes the pupil smaller
- DMydriasis; makes the pupil bigger
4Which part of the eye is under sympathetic tone?
- Athe Iris
- Bthe lens
- CPupillary dilator muscle
- DPupillary sphincter muscle
5What muscular structure helps accomodate the lens with focusing?
- AIris
- Bsuspensory ligaments
- Cciliary body
- DSciera
6Why is the optic disc reffered to as the blond spot?
- AIt contains no receptor cells
- Bit contains only Rods
- Cit contains only cones
- Dit contains electrically excitable neurons
7What colors can dogs not "see"
- Ayellow
- Bblue
- Cgrey
- Dred
8Light passes the retina through many layers of cells what direction does it pass?
- AGanglion cells->amacrine cells/bipolar cells-> horizontal cells-> photoreceptor cells
- Bphotoreceptor cells-> horizontal cells-> amacrine cells/bipolar cells-> ganglion cells
- Cphotoreceptor cells-> amacrine cells/bipolar cells->horizontal cells-> ganglion cells
- DGanglion cells-> horizontal cells-> photoreceptor cells->amacrine cells/bipolar cells
9The fovea of the dog minimizes distortion of light rays
- AVerdadero
- BFalso
10What photoreceptor is responsible for three different visual pigments?
- ACones
- BRods
11What photoreceptor is responsible for low acuity?
- ACones
- BRods
12What photoreceptor cell is mostly in the central retina?
- ACones
- BRods
13What is unique about the vision division of the sensory system?
- Ait does not go to the thalamus
- Bit communicates via receptor potentials
- Cit is in a state of hyperpolarization when resting
- Dit uses sensory cells that contain bipolar neurons instead of pseudo-unipolar neurons
14In the dark the pupil will?
- AMiosis
- BMydriasis
15_____ is measured in ____ and extresses the energy of the sound relative to the energy of a standard refrence sound.
- Aamplitude; decibels
- Bamplitude; Hertz
- CFrequency; Hertz
- DFrequency; decibels
16Where are the sensory receptors in the auditory system?
- Atympanic membrane
- Bossicles
- Ccochlea
- Dorgan of corti
17What part of the ear connects to the nasopharynx via Enstachian tubes
- AInner ear
- BMiddle ear
- Cexternal ear
18What is not a function of the ossicles?
- Aavoid loss of vibration as the sound waves transfer
- Bdecreases the amplitude of the sound waves
- Ctransfer vibration of the eardrum to the oval window
- Ddrain the middle ear cavity
- Eall of the above are functions of the ossicles
19What is the fluid called in the Cochlea?
- APeriliquid
- BEndolymph
- CPerilymph
- DEndoliquid
20Sensory hair cells of the organ of Corti contain?
- AMicrovilli
- Bcilia
- Csterocilia
21______ assists with the opening of channels on the apical side of the sensory cells where ____ is more elastic and analyzes the frequency of sound forming the tonotopic map
- ATectorial membrane; basilar membrane
- Bbasilar membrane; Tectorial membrane
- Cbasilar membrane; apical membrane
- Dapical membrane; basilar membrane
22The cochlear microphonic potential is?
- Athe hyperpolarization of the sensory cells
- Bthe Repolarization of sensory cells
- Cthe depolarization of sensory cells
- DThe hyperpolarization and depolarization of sensory cells
23Where is the sensory component of the vestibular system located?
- AExternal ear
- Bmiddle ear
- Cinner ear
- DNose
24What is the major function of the vestibular system
- Amodulate motor movement
- Bmaintain equilibrium of balance
- Ctransform electromagnetic stimulus into action potentials
- Dcompare the intended movement with the actual movement
25What is the main function of the semicircular canals?
- Adetect rotational/angular acceleration and deceleration of the head
- Bdetect linear acceleration and deceleration of the head
- Cdetect static tilt of the head
26The Anterior canal of the vestibular system detects what kind of movement?
- Aup and down
- Bforward and backward
- CRight and left
27The lateral canal of the vestibular system detects what kind of movement?
- AUp and down
- BRight and left
- Cforward and backward
28The posterior canal of the vestibular system detects what kind of movement?
- Aup and down
- Bright and left
- Cforward and backward
29What is the main function of the otholith organs?
- Adetect rotational/angular acceleration and deceleration of the head
- Bdetect linear acceleration and deceleration of the head
- Cdetect sound vibrations
30What is not true about idopathic vestibular disease?
- Athere is no sex or breed predilection
- Bthe average age in cats is about 4 years young
- Cit can be diagnosed easily
- Dclinical signs can resolve without treatment
31What is not a function of the Efferent system?
- AMaintain posture and provide a stable platform for movement
- Breceive signals and signal the reflex arch
- Ccontrol voluntary movement and locomotion
- Dcontrol visceral motor function
32What division of the motor system has a decreased to absent tendon reflex
- AUpper motor neuron
- BLower motor neuron
33What part of the motor system helps with normal to increased muscle tone?
- AUMN
- BLMN
34If the UMN is unable to inhibit the LMN what will this result in?
- Adecreased muscle tone and spinal reflexes
- Bparesis or paralysis
- Cincreased muscle tone and spinal reflexes
- Dno significant changes
35Loss of Facilatory UMN results in?
- Adecreased muscle tone and spinal reflexes
- Bincreased muscle tone and spinal reflexes
- Cparesis or paralysis
- Dno significant changes
36What portion of the somatic motor system does not give direction that controls the sequential cord activity?
- Acerebral motor cortex
- Bbasal nuclei
- CThalamus
- Dbrainstem
- Espinal cord
37What detects muscle length and changes in muscle length.
- Amuscle spindle
- Bgolgi tendon organ
- CType C fibers
38The motor aspect of the muscle spindle is located?
- AExtrafusal muscle fibers
- Btendon
- Ccenter of the intrafusal fiber
- Dall along the intrafusal fibers except the center
39what counteracts gravity?
- Athe Patelar reflex
- Bthe myotatic reflex
- Cthe extensor postural thrust reflex
40Clinically, an intact reflex, be it normal or exaggerated, tells the clinician that the leasion____________.
- Ainvolved the PNS, not the CNS
- Bdoes not involve the CNS or the PNS
- Cdoes not involve that specific UMN
- DDoes not involved that specific LMN
- Edoes not involve that area of CNS or PNS
- Finvolved the CNS and PNS of that specific area
Información
- Descripción
- Test sobre Neurophysiology 9-12, creado por Shaye Antal el 30/06/2019.
- Autor
- Shaye Antal
- Idioma
- English
- Visitas
- 51
- Valoración
- Aún sin valoraciones Valora este test