Science Quiz / Somesthesis

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Can you name the HYTQ concepts?

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Pain and temperature fibers from the face travel in what tract to synapse in the spinal nucleus of V?
Epipathic sensation (Fine touch, vibrations, proprioception) are carried by which tract?
the development of hypersensitivity to subsequent noxious stimuli
True or False: Thermoreceptors of the body are great at determining absolute temperature.
Fine touch sensations synapse on the _____before decussating and coursing up the VTTT.
True or False: Noradrenergic neurons descending and act to excite spinothalamic tract neurons and terminals of C-fiber neurons
Axons of cells within the mesencephalic tract synapse where?
True or False: Some cells of the dorsal horn and the terminals of noiceptive C fibers contain opiod and dynorphin receptors to inhibit the transmission of pain.
Which afferent muscle fibers are responsible for detecting muscle length?
development of hypersensitivity to the perception of non-noxious stimuli as pain
The V3 branch travels through what foramen or fissure?
The V2 branch travels through what foramen or fissure?
The ability of a person to identify an object without looking at the object is known as what?
True or False: Local anesthetics function by binding to the inactivated Na voltage gated channels preventing the influx of Na needed to initiate an action potential.
Small nerve afferent fibers travel in the ____ portion of the dorsal horn.
Noradrenergic neurons originate where?
Which Brodmann's Area recieves most sensory information projections from the thalamus?
Facial Sensory information is sent from the thalamus to the somatosensory cortices via the ____ of the internal capsule
Which afferent muscle fibers are responsible for velocity or change in muscle stretch?
The non- nociceptive cutaneous afferents project to which Brodmann's Area within the cortex?
True or False: Serotonergic neurons act to excite inhibitory enkephalinergic receptors that inhbit the transmission of pain.
The muscle and nociceptive afferents project to which Brodmann's Area within the cortex?
These type of afferent fibers respond to high intensity mechanical and thermal stimuli and rapidly transmit highly localized pain. They often transmit SHARP PAIN…
Pain and Temperature fibers normally terminate Laminae ____ and ____ in the dorsal horn of the spinal cord.
True or False: Group 1a and II play a major role in the distal movements of the limbs and hands.
QuestionAnswer
NSAIDs block which type of substance?
BA ____ projects onto BA 5 and 7 for higher sensory processing.
the secondary somatosensory cortex projects primarily to which two structures in the brain?
True or False: The fibers suppling the muscle spindles of the muscles of mastication have cell bodies within the Gasserian ganglion and they travel in the mesencephalic tract.
What system is involved in processing noiciceptive information?
True or False: Afferent Fibers Ia and II are responsible for sending infomation about the position of our body in space.
Mechanoreceptor located in the deep dermis. It is slow acting and can detect skin stretch
Which Brodmann's area of the cerebral cortex receives information from 3b about cutaneous receptors
True or False: Endorphinergic neurons are located in the periaqueductal gray.
The V1 branch travels through what foramen or fissure?
the ability to identify numbers traced on the body surface is known as what?
Mechanoreceptor located in the deep dermis. It is fast acting and can detect vibrations
Pain, temperature, and fine touch sensations ascend to the VPM of the thalamus via what tract?
These type of afferent fibers respond to high intensty mechanical, exogenous or endogenous chemical, and thermal stimuli. Often characterized by Dull, ACHY PAIN.. Slowly transmitte
the receptive fields from all the neurons in one dorsal root ganglion are known as a ______.
Which Brodmann's area of the cerebral cortex receives information from 3a about deep receptors?
True or False: Ectopic impulse generation is the spontaneous generation of action potentials and can occur as a result of high density of sodium voltage gated channels created in r
The physical sense of the position and movement of the limbs in relation to each other and the body.
Propathic sensation (pain and temperature) are carried to the cortex via what pathway?
Large nerve afferent fibers travel in the ____ portion of the dorsal horn
Mechanoreceptor located in the superficial dermis. It is slow acting and can detect skin pressure/ deformation, sensation of form and texture.
Which Brodmann's areas project to the pre-motor and motor cortical areas?
Mechanoreceptor located in the superficial dermis. It is fast acting and can detect flutter motion and slippage along skin
True or False:According to the Gate Theory of pain modulation, The activation of large diameter afferent nerve fibers can modulate or decrease the transmission of pain sensation.
True or False: The secondary somatosensory cortex is involved in shape and texture discrimination.

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Created Jan 28, 2012ReportFavoriteNominate
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