+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
Somatic sensations include
|
Discriminative touch, vibration, proprioception, crude touch, termperature and pain
|
|
The two most important ascending pathways are
|
Dorsal column - medial lemniscal and spinothalmic
|
|
The dorsal column systems carries
|
Conscious apprecaition of cuteanous (discriminative touch, steognosis) and conscious apprecaition of proprioception
|
|
Stereognosis
|
Fine form and texture discriination; recognition of three dimenisonal shape
|
|
Peripheral mechanoreceptors include those for
|
Discriminative touch, vibration, proprioception (include muscle stretch receptors)
|
|
Two fasciculi of the dorsal column
|
Fasiculus gracilis, fasiculus cuneatus
|
|
Function of FG
|
Carries informatrion principally from lower limb and lower portions of body (T6 and below)
|
|
Function of FC
|
Carries information from the upper limbs and portions (T6 and above)
|
|
The axons from FC and FG synapse in the _____ and ____ in the medulla
|
Nucleus gracilis and nucleous cuneatus
|
|
Axons deccusate in the dorsal system a the _____ and form the contrlateral _______
|
Senosry decussation; medial lemniscus
|
|
Fibers of the medial lemniscus carrying touch, vibration and proprioceptive information synapse in the _________ of the thalamus
|
Ventral, posteriorlateral nucleus (VPL)
|
|
Axons from the VPL ascend via the posterior limb of the internal capsule and synapse in a wide region including a string projection to the _________
|
Postcentral gyrus
|
|
Dorsal column signs from damage to the dorsal region include
|
Impaired vibration sense, inability to determine limb position, asterognosis, impaired two point discrimination; shuffling uncoordinated gait
|
|
The type of information carried by the STT includes:
|
Pain, temperature and nondiscriminative touch
|
|
Disruption of the STT can produce symnptoms including
|
Hypesthesia (reduced sensation); numbness tingling (parasthesia), complete loss of sensation (anasthesia)
|
