Spinal Cord Flashcards
Cervical vertebrae #
7
Thorassic vertebrae
12
Lumbar #
5
Descending -efferent tracts (ACT)
Anterior corticospinal
Lateral corticospinal
Rubrospinal
Tectospinal
Anterior and Lateral Corticospinal
Sends info to muscles and organs.
Anterior smaller than lateral
Rubrospinal
Fine motor control upper extremities
Facilitates bending towards the body and inhibits bending away from the body
Tectospinal
Aids in directing head movement in response to visual and auditory stimuli
Fascuculus Cuneatus and Faniculus Gracilis
Joint and muscle sensation
Lissauer
Pain and temperature
Anterior/posterior spinocerebellar
Proprioception- seems info to cerebellum
Spinothalamic tracts
Lateral-pain and temp
Central-impulse of touch
Spinorericular
Sends info to reticular formation of thalamus
Reflex for pain
Spinotectal
Sends info from SC to tectrum, which possesses information from the eyes and other sensory organs
Major ascending tracts
Fascuculus Cuneatus and Faniculus Gracilis Lissauer Anterior/Posterior Spinocerebellar Spinothalamic Spinoreticular Spinotectal
*Hint name states where they start(spino) and end
Spinal cord vascular supply
Main supply
Anterior spinal artery feeds 2/3 of the spinal cord- anterior spinal artery is fed by the aorta
Two smaller arteries run posterior to the cord under Fed from the vertebral arteries and flow into the posterior 1/3 of the spinal cord
Central cord syndrome
Neck hyper extension
Weakness and numbness primarily in the arms often accompanied by bowel and bladder incontinence
Brown-Sequard Syndrome
One side of the spinal cord is injured
ipsilateral paralysis, loss of light touch sensation on the side of the lesion, loss of pain and temperature sensation on the contralateral side
Anterior cord syndrome
Common because the anterior spinal cord is controlled by one artery. Also more susceptible to injury than other portions of the cord. Loss of muscle control pain and temperature without loss of proprioception and touch
Posterior cord syndrome
Occurs with intraoperative complications
Rare
No sense of where limbs and body are in space below the level of the damage but possesses strength
Chronic pain
58%
More prevalent with people with mTBI than severe
Swallowing problems after severe TBI
90%
