Spinal Cord Segmental Organization Quiz

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Questions and Answers

Which of the following is a complication associated with spinal cord injury?

Muscle spasm

Autonomic dysreflexia (correct)

Diminished exercise capacity

Osteoporosis

What is the main cause of pressure sores in individuals with spinal cord injury?

Exposure to cold

Impaired sweating response

Unrelieved pressure (correct)

Lack of weight bearing

Which level of spinal cord injury usually requires artificial ventilation for breathing?

T12

C4 (correct)

Which population group has the highest occurrence of traumatic spinal cord injuries?

Young adults aged 15-24 years old Signup and view all the answers

Which of the following is a primary feature of spinal cord injury?

Damage to the neural elements of the spinal canal resulting in impairments in motor, sensory, and/or autonomic nervous system function Signup and view all the answers

What determines the severity of spinal cord injury?

Segmental level and completeness of injury Signup and view all the answers

What is the estimated lifetime cost of spinal cord injury per incidence of paraplegia?

$5 million Signup and view all the answers

What are the consequences of spinal cord injury?

Impairments in body systems, physical activities, and participation Signup and view all the answers

Which part of the spinal cord is responsible for conducting sensory information from the peripheral nervous system to the brain?

Cervical enlargement Signup and view all the answers

What is the function of the dorsal root in the spinal cord?

Conduct sensory axons into the spinal cord Signup and view all the answers

Which level of spinal cord injury allows for normal motor function in head, neck, shoulders, arms, hands, and fingers?

T2-T6 Signup and view all the answers

Which syndrome is characterized by complete motor function loss bilaterally, but preserved fine touch and proprioception sense?

Anterior cord syndrome Signup and view all the answers

Which syndrome results from hyperextension and compressive injuries that cause central cord swelling, with impairment of motor function in the upper extremities greater than lower extremities?

Central cord syndrome Signup and view all the answers

Which syndrome is generally very rare and results from compression by tumor or infarction of the posterior spinal artery, with loss of touch and proprioception below the lesion but preserved motor function and crude touch, pain, and temperature sensation?

Posterior cord syndrome Signup and view all the answers

Which region of the spinal cord has spinal nerves found below the corresponding vertebrae?

Thoracic region Signup and view all the answers

What does the term 'myotome' refer to?

Muscles innervated by axons from a single spinal segment Signup and view all the answers

How is the level of the lesion determined in classification of spinal cord injury?

The most distal uninvolved spinal segment with normal function Signup and view all the answers

What is the difference between tetraplegia and paraplegia?

Tetraplegia involves all 4 extremities, trunk, and respiratory muscles, while paraplegia involves all or part of the trunk and both lower extremities Signup and view all the answers

Study Notes

Complications of Spinal Cord Injury

Pressure sores are a complication of spinal cord injury, primarily caused by immobility and poor circulation
Other complications include respiratory issues, cardiovascular problems, and bowel and bladder dysfunction

Epidemiology of Spinal Cord Injury

The population group with the highest occurrence of traumatic spinal cord injuries is young adult males

Features of Spinal Cord Injury

A primary feature of spinal cord injury is loss of motor and/or sensory function below the level of injury
The severity of spinal cord injury is determined by the level and completeness of the injury
Tetraplegia refers to impairment of all four limbs, while paraplegia refers to impairment of the lower limbs only

Anatomy of the Spinal Cord

The dorsal horn of the spinal cord is responsible for conducting sensory information from the peripheral nervous system to the brain
The dorsal root is responsible for transmitting sensory information from the periphery to the spinal cord
The lunbosacral region of the spinal cord has spinal nerves found below the corresponding vertebrae

Classification of Spinal Cord Injury

The level of the lesion determines the classification of spinal cord injury
The level of injury is determined by neurological examination and imaging studies

Medical Terms and Concepts

Myotome refers to a group of muscles innervated by a single spinal nerve root
Central cord syndrome results from hyperextension and compressive injuries, causing impairment of motor function in the upper extremities
Posterior cord syndrome is a rare condition characterized by loss of touch and proprioception below the lesion, with preserved motor function and crude touch, pain, and temperature sensation
Brown-Sequard syndrome is characterized by complete motor function loss bilaterally, but preserved fine touch and proprioception sense

Economic Burden

The estimated lifetime cost of spinal cord injury per incidence of paraplegia is significant

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Description

Test your knowledge on the segmental organization of the spinal cord in this quiz from the School of Allied Health, Exercise and Sports Sciences. Learn about how each segment of the spinal cord is connected to specific regions of the body and the role of spinal nerves.