8th Physiology Lecture Exam - Nervous System (Batch 2024) Flashcards
1.Which of the following sensations would be perceived when the pulse frequency of SA fibers is increased?
- steady pressure
- increased pressure
-tapping sensation
vibration
- steady pressure
2.Which of the following structures is responsible for detecting head rotation?
- Utricle and Saccule
- Semicircular canals
- Organ of Corti
- Cochlear
- Semicircular canals
3.Which of the following refers to the ability of the eye to adjusts to different distances of light source while maintaining focal length?
- Adaptation
- Accommodation
- Transduction
- Translocation
- Accommodation
4.Which of the following response patterns is associated with Ruffini Endings?
- FA1
- FA2
- SA1
- SA2
- SA2
5.Which of the following tracts is involved in the sensation of temperature and pain?
- Lateral Corticospinal Tract
- Posterolateral Tract
- Anterior Spinothalamic Tract
- Lateral Spinothalamic Tract
- Lateral Spinothalamic Tract
6.Which of the following tracts is involved in the sensation of crude touch and pressure?
- Lateral Corticospinal Tract
- Posterolateral Tract
- Anterior Spinothalamic Tract
- Lateral Spinothalamic Tract
- Anterior Spinothalamic Tract
7.Which of the following transports requires
kinesin?
- Fast Axonal Transport
- Slow Axonal Transport
- Retrograde Axonal Transport
- Anterograde Axonal Transport
- Anterograde Axonal Transport
8.Which of the following statements is true of the focal point in myopia?
- posterior to retina
- in front of retina
- always focused on the retina
- in front of the optic disc
- in front of retina
- Which of the following response patterns is associated with Meissner’s Corpuscle?
- FA1
- FA2
- SA1
- SA2
- FA1
10.Which of the following is true of taste perception?
- Type of taste is determined by type of receptor protein
- Salty and sour taste is activated by second messenger substances
- Sweet and bitter taste is activated by ion channels
- Chemoreceptors are specialized for several types of taste stimulus
- Type of taste is determined by type of receptor protein
11.Which of the following structures are stacks of rough endoplasmic reticulum that is included in the neuronal biosynthetic apparatus?
- Soma
- Schwann Cell
- Golgi apparatus
- Nissl Bodies
- Nissl Bodies
12.Which of the following statements about
Nociceptors is NOT correct?
- has the ability to sense tissue-damaging stimuli
- it originates mostly as free nerve endings
- it has distinct morphological specialization has the ability to become sensitized
- it has distinct morphological specialization has the ability to become sensitized
14.Which of the following responses in sensory afferrents will start firing action potentials at the onset of the stimulus and continue to fire until the stimulus ends?
- Fast-Adapting Fibers
- Slow-Adapting Fibers
- Type 1 units
- Type 2 units
- Slow-Adapting Fibers
13.Which of the following is not a primary taste sensation?
- sweet
- bitter
- fruity
- umami
- fruity
15.Which of the following structures represents the main termination site for ascending somatosensory information in the diencephalon?
- Dorsal Column–Medial Lemniscus Pathway - Trigeminal Nuclear Complex Anteroposterior
- Nuclear Complex
- Ventroposterior Nuclear Complex
- Ventroposterior Nuclear Complex
16.Which neural apparatus is responsible for the transduction of sound?
- Basilar membrane
- Resissner’s membrane
- Tympanic membrane
- Organ of Corti
- Organ of Corti
17.Which of the following structures is involved in reflex responses to the appearance of a threatening object in the visual field?
- Edinger-Westphal nucleus
- lateral geniculate nucleus
- inferior colliculi
- superior colliculi
- superior colliculi
18.Which of the following structures is responsible for adjusting the optical focus of the eye?
- Lens
- Cornea
- Iris
- Pupils
- Lens
19.Which of the following is true of the relationship between the ciliary body and the lens?
- When relaxed the lens flattens
- When relaxed the lens assumes a spherical shape
- When relaxed tension exerted on the lens decreases
- When constricted tension on the lens increases
- When relaxed the lens flattens
20.Which of the following pain sensations is a phenomenon that occurs when the brain misidentifies the source of the pain?
Neuropathic pain
Referred pain
Phantom limb pain
Radiating pain
Referred pain
21.Which of the following statements is NOT true regarding dermatomes?
The pattern of innervation is determined
during embryological development.
Receives its densest innervation from the corresponding spinal cord segment.
A given dorsal root ganglion supplies a specific cutaneous region
Transection of a single dorsal root causes liberal sensory loss in the corresponding dermatome
Transection of a single dorsal root causes liberal sensory loss in the corresponding dermatome
22.Which of the following muscles is innervated by cranial nerve IV?
inferior oblique
superior oblique
lateral rectus
medial rectus
superior oblique
23.Which of the following division of dendrites that have daughter branches extending from a more proximal branch?
Primary Dendrites
Secondary Dendrites
Higher-order Dendrites
Lower-order Dendrites
Higher-order Dendrites
24.Which of the following statements is TRUE of the divisions of the trigeminal nuclear complex?
This complex is composed of 4 sensory divisions.
Motor neurons project to skeletal muscles of the head via the trigeminal nerve.
Proprioceptive information is not conveyed via the trigeminal nerve.
The mesencephalic nucleus contains third-order neurons.
Motor neurons project to skeletal muscles of the head via the trigeminal nerve.
25.Which of the following layers of the retina is hit first by light?
inner limiting membrane
outer limiting membrane
inner nuclear
outer nuclear
inner limiting membrane
26.Which of the following major tracts is responsible for motor communication to the brain?
Dorsal Column-Medial Lemniscus Pathway
Spinothalamic Tract
Lateral Corticospinal Tract
Posterolateral Tract
Lateral Corticospinal Tract
27.Which of the following structures is responsible for determining the orientation of the head to gravity?
Utricle and Saccule
Semicircular canals
Organ of Corti
Cochlea
Utricle and Saccule
28.Which statement CORRECTLY describes the C axons?
responsible for first pain
produce a dull, diffuse and burning sensation
conduct signals faster than Aδ fibers do
heat-sensitive
produce a dull, diffuse and burning sensation
29.Which of the following statements is true of presbyopia?
lens becomes thinner
corrected by bifocal lens
there is increased ability of the lens to bend light
it is due to increased elasticity of the lens
lens becomes thinner
30.Which of the following transports require dynein?
- Fast Axonal Transport
- Slow Axonal Transport
- Retrograde Axonal Transport
- Anterograde Axonal Transport
- Retrograde Axonal Transport
31.Which of the following cells are derived from erythromyeloid stem cells and play an important role in immune responses within the CNS?
- Microglia
- Satellite cells
- Ependymal cells
- Astrocytes
- Microglia
32.Which of the following divisions of the somatosensory provides information about contact of the skin with objects in the external world?
- Exteroceptive Division
- Proprioceptive Division
- Enteroceptive Division
- Trigeminal Division
- Exteroceptive Division
33.Which of the following prevents solutes in the circulating blood from non-selectively crossing into the ECF of the CNS?
- Choroid Plexus
- Blood Brain Barrier
- Blood Retinal Barrier
- Blood Cerebrospinal Fluid Barrier
- Blood Brain Barrier
34.Which area in the olfactory system is responsible for the primitive response to olfaction?
- Medial
- Lateral
- Inferior
- Superior
- Medial
35.Which of the following structures serve as a storage site for synaptic strength and help transmit electrical signals to the neuron’s cell body?
- Dendritic Spines
- Neurofilaments
- Microtubules
- Golgi apparatus
- Dendritic Spines
36.Which of the following response patterns is associated with Pacinian Corpuscles?
- FA1
- FA2
- SA1
- SA2
- FA2
37.Which of the following pathways respond to noxious stimuli?
- Spinothalamic tract
- Spinoreticular tract
- Spinomesenphalic tract
- Cosrticospinal tract
- Spinomesenphalic tract
38.Which of the following protects the ear from damaging loud sounds?
- vestibular reflex
- impedance matching
- attenuation reflex
- sound transduction
- attenuation reflex
39.Which of the following is a function of the less old olfactory system?
- licking of lips
- salivation
- liking the smell of fried chicken
- feeling happy at the smell of fried chicken
- liking the smell of fried chicken
40.Which of the following divisions of the somatosensory system has receptors for monitoring the internal state of the body?
- Exteroceptive Division
- Proprioceptive Division
- Enteroceptive Division
- Trigeminal Division
- Enteroceptive Division