applied anatomy \ lumbar

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Questions and Answers

Which part of the body does the lumbar spine support?

  • Lower body
  • Arms
  • Upper body (correct)
  • Head

How many facet joints are there in the lumbar spine?

  • 5
  • 10 (correct)
  • 15
  • 20

What percentage of the axial load do the facet joints carry with a normal intact disc?

  • 40-45%
  • 20-25% (correct)
  • 30-35%
  • 10-15%

What is the term for degeneration of the intervertebral disc?

<p>Spondylosis (D)</p> Signup and view all the answers

What is the term for a defect in the pars interarticularis or the arch of the vertebra?

<p>Spondylolysis (A)</p> Signup and view all the answers

What is the term for a forward displacement of one vertebra over another?

<p>Spondylolisthesis (C)</p> Signup and view all the answers

What is the term for a backward displacement of one vertebra on another?

<p>Retrolisthesis (D)</p> Signup and view all the answers

Which of the following is a function of the cartilaginous end plate?

<p>Allows fluid to move between the disc and the vertebral body (A)</p> Signup and view all the answers

What is the primary function of the intervertebral discs?

<p>To act as an incompressible fluid (B)</p> Signup and view all the answers

What causes Schmorl's nodules?

<p>Defects in the cartilaginous end plate (A)</p> Signup and view all the answers

Which structure around the intervertebral disc is pain-sensitive?

<p>All of the above (D)</p> Signup and view all the answers

What is the result of a disc prolapse?

<p>Bulging of the disc without rupture of the annulus fibrosus (B)</p> Signup and view all the answers

What can pressure on the spinal cord itself lead to?

<p>Myelopathy (A)</p> Signup and view all the answers

What determines the severity of the neurological deficit in disc injuries?

<p>Amount of pressure on the neurological tissues (D)</p> Signup and view all the answers

Which of the following is a characteristic of the facet joints in the lumbar spine?

<p>They control the direction of movement (C)</p> Signup and view all the answers

What is the close packed position of the facet joints in the lumbar spine?

<p>Extension (B)</p> Signup and view all the answers

What is the capsular pattern of the facet joints in the lumbar spine?

<p>Side flexion and rotation equally limited, followed by extension (C)</p> Signup and view all the answers

Which ligament is unique to the lumbar spine and pelvis?

<p>Iliolumbar ligament (D)</p> Signup and view all the answers

What is the function of the intervertebral discs in the vertebral column?

<p>To allow for significant movement between the vertebrae (A)</p> Signup and view all the answers

What is the outer portion of the annulus fibrosus made up of?

<p>Sharpey's fibers (D)</p> Signup and view all the answers

What happens to the water content of the intervertebral discs with age?

<p>It decreases (D)</p> Signup and view all the answers

Which part of the spine is the most common site of problems in the vertebral column?

<p>Lumbar spine (B)</p> Signup and view all the answers

Which nerve root is more likely to be compressed by the L4 disc?

<p>L5 nerve root (D)</p> Signup and view all the answers

What is the name of the joint between the mobile segment L5 and the stable segment S1?

<p>L5-S1 joint (A)</p> Signup and view all the answers

What is the function of the intervertebral disc unit in the lumbar spine?

<p>To bear weight (D)</p> Signup and view all the answers

Which factor increases the amount of stress on the L5-S1 segment?

<p>Greater angle between L5 and S1 (A)</p> Signup and view all the answers

What is the close packed position of the lumbar spine?

<p>Full extension (A)</p> Signup and view all the answers

What is the capsular pattern of the lumbar spine?

<p>Side flexion and rotation equally limited (B)</p> Signup and view all the answers

What is the activity that causes the highest percentage increase in disc pressure at L3?

<p>Lifting a 20-kg weight with the back straight and knees bent (C)</p> Signup and view all the answers

Which of the following is considered a favorable prognostic factor for nonoperative care of lumbar disc herniation?

<p>Progressive return from neurological deficit within the first 12 weeks (A)</p> Signup and view all the answers

Which joints control the direction of movement in the lumbar spine?

<p>Facet joints (D)</p> Signup and view all the answers

What is the resting position of the facet joints in the lumbar spine?

<p>Midway between flexion and extension (D)</p> Signup and view all the answers

What is the function of the iliolumbar ligament?

<p>To stabilize L5 with the ilium (B)</p> Signup and view all the answers

What is the main function of the intervertebral discs in the vertebral column?

<p>To act as a shock absorber (B)</p> Signup and view all the answers

What is the composition of the annulus fibrosus?

<p>Collagenous fibers (A)</p> Signup and view all the answers

What happens to the water content of the intervertebral discs with age?

<p>Decreases (D)</p> Signup and view all the answers

What is the term for the fusion of the fifth lumbar segment to the sacrum or ilium?

<p>Sacralization (D)</p> Signup and view all the answers

Which joint in the lumbar spine carries about 20% to 25% of the axial load with a normal intact disc?

<p>Superior facets (C)</p> Signup and view all the answers

What is the term for a defect in the pars interarticularis or the arch of the vertebra?

<p>Spondylolysis (A)</p> Signup and view all the answers

What is the function of the facet joints in the lumbar spine?

<p>Provide torsional and shear strength (B)</p> Signup and view all the answers

What may lead to a forward displacement of one vertebra over another?

<p>Spondylolisthesis (C)</p> Signup and view all the answers

What is the term for a backward displacement of one vertebra on another?

<p>Retrolisthesis (B)</p> Signup and view all the answers

What is the name for degeneration of the intervertebral disc?

<p>Spondylosis (B)</p> Signup and view all the answers

What part of the body does the lumbar spine support?

<p>Pelvis and lower limbs (C)</p> Signup and view all the answers

Which of the following structures allows fluid to move between the intervertebral disc and the vertebral body?

<p>Cartilaginous end plates (A)</p> Signup and view all the answers

What is the primary function of the cartilaginous end plate?

<p>To restrict the movement of large molecules into the disc (D)</p> Signup and view all the answers

What is the main source of nutrition for the intervertebral disc?

<p>Cartilaginous end plates (D)</p> Signup and view all the answers

At what age does the vascularity of the intervertebral discs decrease?

<p>8 years (C)</p> Signup and view all the answers

What percentage of individuals have Schmorl's nodules?

<p>20% to 30% (D)</p> Signup and view all the answers

What is the result of a disc extrusion?

<p>The annulus fibrosus is perforated and discal material moves into the epidural space (A)</p> Signup and view all the answers

What are the pain-sensitive structures around the intervertebral disc?

<p>Anterior longitudinal ligament (A)</p> Signup and view all the answers

Which of the following is true about the nerve roots in the lumbar spine?

<p>Each root is named for the vertebra above it (A)</p> Signup and view all the answers

Which segment of the vertebral column is the most common site of problems?

<p>Lumbar spine (B)</p> Signup and view all the answers

What increases the stress on the L5-S1 segment of the vertebral column?

<p>Increased weight-bearing at this level (D)</p> Signup and view all the answers

What is the primary function of the intervertebral discs in the lumbar spine?

<p>To allow for movement between the vertebrae (D)</p> Signup and view all the answers

Which activity causes the highest percentage increase in disc pressure at L3?

<p>Lifting a 20-kg weight with the back straight and knees bent (A)</p> Signup and view all the answers

Which of the following is a favorable prognostic factor for nonoperative care of lumbar disc herniation?

<p>Limited psychosocial issues (A)</p> Signup and view all the answers

What is the term for a defect in the pars interarticularis or the arch of the vertebra?

<p>Spondylolysis (C)</p> Signup and view all the answers

What is the function of the cartilaginous end plate in the intervertebral disc unit?

<p>To provide nutrition to the disc (C)</p> Signup and view all the answers

What is the term for a backward displacement of one vertebra on another?

<p>Spondylolisthesis (D)</p> Signup and view all the answers

Which structure in the intervertebral disc unit allows fluid to move between the disc and the vertebral body?

<p>Cartilaginous end plate (B)</p> Signup and view all the answers

What is the term for the herniation of the nucleus pulposus into the vertebral body?

<p>Schmorl's nodules (A)</p> Signup and view all the answers

Which part of the intervertebral disc unit is primarily avascular?

<p>Annulus fibrosus (B)</p> Signup and view all the answers

Which structure restricts the movement of large molecules into the intervertebral disc?

<p>Cartilaginous end plate (A)</p> Signup and view all the answers

What is the term for a disc injury in which the annulus fibrosus is perforated and discal material moves into the epidural space?

<p>Disc extrusion (D)</p> Signup and view all the answers

Which part of the intervertebral disc unit decreases with age and is replaced with collagen?

<p>Mucopolysaccharides (C)</p> Signup and view all the answers

What is the term for a disc injury in which the disc bulges posteriorly without rupture of the annulus fibrosus?

<p>Disc prolapse (B)</p> Signup and view all the answers

Which structure should be included in any examination of the spine as a whole or in any examination of the hip or sacroiliac joints?

<p>Lumbar spine (A)</p> Signup and view all the answers

What may lead to degeneration of the intervertebral disc in the lumbar spine?

<p>Injury, degeneration, or trauma to the motion segment (B)</p> Signup and view all the answers

What is the term for a forward displacement of one vertebra over another?

<p>Spondylolisthesis (B)</p> Signup and view all the answers

What is the primary function of the facet joints in the lumbar spine?

<p>Provide torsional and shear strength (C)</p> Signup and view all the answers

What is the composition of the annulus fibrosus?

<p>Fibrocartilage (D)</p> Signup and view all the answers

What ligament is unique to the lumbar spine and pelvis?

<p>Ligamentum flavum (D)</p> Signup and view all the answers

What is the name of the joint between the mobile segment L5 and the stable segment S1?

<p>Sacroiliac joint (B)</p> Signup and view all the answers

Which of the following joints control the movement that occurs in the lumbar spine?

<p>Facet joints (A)</p> Signup and view all the answers

What is the resting position of the facet joints in the lumbar spine?

<p>Midway between flexion and extension (A)</p> Signup and view all the answers

What ligament connects the transverse process of L5 to the posterior ilium in the lumbar spine?

<p>Iliolumbar ligament (D)</p> Signup and view all the answers

What is the function of the intervertebral discs in the lumbar spine?

<p>All of the above (D)</p> Signup and view all the answers

What is the composition of the annulus fibrosus in the intervertebral disc?

<p>Outer zone made up of fibrocartilage, intermediate zone made up of fibrocartilage, inner zone made up of fibrocartilage (B)</p> Signup and view all the answers

What happens to the water content of the intervertebral discs with age?

<p>Decreases (D)</p> Signup and view all the answers

What is the term for the degeneration of the intervertebral disc?

<p>Spondylosis (D)</p> Signup and view all the answers

Which segment of the vertebral column is the most common site of problems?

<p>Lumbar spine (C)</p> Signup and view all the answers

What is the angle between L5 and S1 compared to the angles between other vertebrae?

<p>Greater (D)</p> Signup and view all the answers

What is the name of the joint between the mobile segment L5 and the stable segment S1?

<p>Sacroiliac joint (C)</p> Signup and view all the answers

Which nerve root is more likely to be compressed by the L4 disc?

<p>L5 (C)</p> Signup and view all the answers

What is the resting position of the facet joints in the lumbar spine?

<p>Midway between flexion and extension (D)</p> Signup and view all the answers

What is the main function of the intervertebral discs in the vertebral column?

<p>To bear weight (D)</p> Signup and view all the answers

What determines the severity of the neurological deficit in disc injuries?

<p>The size of the disc herniation (B)</p> Signup and view all the answers

What is the term for a defect in the pars interarticularis or the arch of the vertebra?

<p>Spondylolysis (C)</p> Signup and view all the answers

What is the main source of nutrition for the intervertebral disc?

<p>Cartilaginous end plate (A)</p> Signup and view all the answers

Which structure in the intervertebral disc unit allows fluid to move between the disc and the vertebral body?

<p>Cartilaginous end plate (A)</p> Signup and view all the answers

What is the name for herniations of the nucleus pulposus into the vertebral body?

<p>Schmorl's nodules (C)</p> Signup and view all the answers

Which of the following is a symptom of pressure on the cauda equina?

<p>Bowel/bladder dysfunction (C)</p> Signup and view all the answers

What is the term for a defect in the pars interarticularis or the arch of the vertebra?

<p>Spondylolisthesis (B)</p> Signup and view all the answers

What is the function of the intervertebral discs in the vertebral column?

<p>To allow movement (C)</p> Signup and view all the answers

Which structure around the intervertebral disc is primarily avascular?

<p>Annulus fibrosus (C)</p> Signup and view all the answers

What is the term for a protrusion of the disc without rupture of the annulus fibrosus?

<p>Disc prolapse (A)</p> Signup and view all the answers

What is the main function of the facet joints in the lumbar spine?

<p>To allow movement between the bones (D)</p> Signup and view all the answers

What is the term for the abnormal occurrence where the first sacral segment is included in discussions of the lumbar spine?

<p>Lumbarization of S1 (B)</p> Signup and view all the answers

Which ligament connects the transverse process of L5 to the posterior ilium in the lumbar spine?

<p>Iliolumbar ligament (A)</p> Signup and view all the answers

What is the composition of the annulus fibrosus in the intervertebral disc?

<p>All of the above (D)</p> Signup and view all the answers

What is the term for the gradual replacement of the hydrophilic mucoid tissue in the nucleus pulposus of the intervertebral disc with fibrocartilage?

<p>Nucleus pulposus degeneration (A)</p> Signup and view all the answers

What is the percentage of water in the intervertebral disc at birth?

<p>90% (B)</p> Signup and view all the answers

What is the main source of nutrition for the intervertebral disc?

<p>Diffusion from surrounding blood vessels (C)</p> Signup and view all the answers

Which segment of the vertebral column is the most common site of problems due to bearing more weight than any other vertebral level?

<p>L5-S1 (B)</p> Signup and view all the answers

What is the term for the degeneration of the intervertebral disc in the lumbar spine?

<p>Discogenic low back pain (D)</p> Signup and view all the answers

What is the composition of the annulus fibrosus in the intervertebral disc unit?

<p>Consolidated fibrous tissue (B)</p> Signup and view all the answers

What is the term for a disc injury in which the annulus fibrosus is perforated and discal material moves into the epidural space?

<p>Intervertebral disc herniation (A)</p> Signup and view all the answers

What is the resting position of the facet joints in the lumbar spine?

<p>Midway between flexion and extension (D)</p> Signup and view all the answers

What ligament connects the transverse process of L5 to the posterior ilium in the lumbar spine?

<p>Iliolumbar ligament (C)</p> Signup and view all the answers

What is the name of the joint between the mobile segment L5 and the stable segment S1?

<p>Sacroiliac joint (C)</p> Signup and view all the answers

What is the term for a forward displacement of one vertebra over another?

<p>Spondylolisthesis (A)</p> Signup and view all the answers

What ligament is unique to the lumbar spine and pelvis?

<p>Iliolumbar ligament (D)</p> Signup and view all the answers

Which of the following is NOT a possible result of injury, degeneration, or trauma to the motion segment in the lumbar spine?

<p>Retrolisthesis (C)</p> Signup and view all the answers

How many facet joints are there in the lumbar spine?

<p>10 (B)</p> Signup and view all the answers

What percentage of the axial load do the facet joints carry with a normal intact disc?

<p>20% (A)</p> Signup and view all the answers

What percentage of the axial load can the facet joints carry with degeneration of the disc?

<p>70% (B)</p> Signup and view all the answers

What percentage of the torsional and shear strength do the facet joints provide?

<p>40% (A)</p> Signup and view all the answers

What direction do the superior facets, or articular processes, face in the lumbar spine?

<p>Medially and backward (D)</p> Signup and view all the answers

What direction do the inferior facets face in the lumbar spine?

<p>Laterally and forward (D)</p> Signup and view all the answers

Flashcards

What does the lumbar spine support?

The lumbar spine supports the pelvis and lower limbs.

How many facet joints are in the lumbar spine?

The lumbar spine has 10 facet joints, 5 pairs.

What percentage of axial load do lumbar facets carry?

Facet joints in the lumbar spine carry about 20% to 25% of the axial load when the disc is healthy.

What is the term for disc degeneration?

Degeneration of the intervertebral disc is called spondylosis.

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What is spondylolysis?

A defect in the pars interarticularis or the arch of the vertebra is called spondylolysis.

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What is a spondylolisthesis?

Spondylolisthesis is a forward displacement of one vertebra over another.

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What is a retrolisthesis?

A backward displacement of one vertebra on another is called retrolisthesis.

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What is the function of the cartilaginous end plate?

The cartilaginous end plates allow fluid to move between the disc and the vertebral body.

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What is the main function of intervertebral discs?

Intervertebral discs act as incompressible fluids, distributing forces and allowing movement.

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What causes Schmorl's nodules?

Schmorl's nodules are caused by defects in the cartilaginous end plate, allowing disc material into the vertebral body.

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Which structures around the disc are pain-sensitive?

All structures surrounding the intervertebral disc are pain-sensitive, including the annulus fibrosus, the nucleus pulposus, and the nerve roots.

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What happens in a disc prolapse?

A disc prolapse involves bulging of the disc without rupture of the annulus fibrosus.

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What can pressure on the spinal cord cause?

Pressure on the spinal cord itself can lead to myelopathy, affecting the nerves.

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What determines neurological deficit severity in disc injuries?

The severity of neurological deficit in disc injuries depends on the amount of pressure on the neurological tissues.

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What is the function of facet joints in the lumbar spine?

Facet joints in the lumbar spine control the direction of movement, limiting twisting and bending forces.

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What is the closed packed position of lumbar facet joints?

The close packed position of the lumbar facet joints is extension, where they are most stable.

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What is the capsular pattern of the lumbar facet joints?

The facet joints of the lumbar spine have a capsular pattern of restriction, limiting side flexion and rotation equally, followed by extension.

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Which ligament is unique to the lumbar spine and pelvis?

The iliolumbar ligament is unique to the lumbar spine and pelvis, helping to stabilize the L5 vertebrae.

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What's the function of discs in vertebral movement?

Intervertebral discs allow significant movement between vertebrae, enabling bending and twisting.

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What makes up the outer annulus fibrosus?

The outer portion of the annulus fibrosus is made up of Sharpey's fibers, connecting to the vertebrae.

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What happens to disc water content with age?

As we age, the water content of the intervertebral disc decreases, making it less resilient.

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Which part of the spine has most problems?

The lumbar spine, due to its weight-bearing function, is the most common site of problems in the vertebral column.

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Which nerve root is affected by L4 disc compression?

The L5 nerve root is more likely to be compressed by the L4 disc because of the way the nerve roots exit the spinal canal.

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What is the name of the joint between L5 and S1?

The joint between the mobile segment L5 and the stable segment S1 is called the L5-S1 joint.

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What is the function of the intervertebral disc unit?

The intervertebral disc unit in the lumbar spine bears weight and acts as a shock absorber, protecting the vertebrae.

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What increases stress on L5-S1?

The greater the angle between L5 and S1, the more stress is placed on the L5-S1 segment.

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What is the close packed position of the lumbar spine?

The close packed position of the lumbar spine is full extension, where the joints are most stable.

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What is the capsular pattern of the lumbar spine?

The capsular pattern of the lumbar spine follows side flexion and rotation equally limited, then extension.

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What activity puts the most pressure on L3?

Lifting a 20-kg weight with a straight back and bent knees causes the highest percentage increase in disc pressure at L3.

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What is favorable for non-operative lumbar disc herniation?

Progressive return of neurological function within the first 12 weeks is a favorable prognostic factor for nonoperative care of lumbar disc herniation.

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Which joints control lumbar movement?

Facet joints control the direction of movement in the lumbar spine, limiting twisting and bending forces.

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What is the resting position of lumbar facet joints?

The resting position of the facet joints in the lumbar spine is midway between flexion and extension.

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What is the function of the iliolumbar ligament?

The iliolumbar ligament stabilizes L5 with the ilium, preventing excessive movement.

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What is the main function of intervertebral discs?

Intervertebral discs act as shock absorbers, cushioning impacts on the vertebral column.

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What is the annulus fibrosus made of?

The annulus fibrosus is made up of collagenous fibers arranged in concentric rings, providing strength and stability.

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What happens to disc water content with age?

The water content of intervertebral discs decreases with age, leading to reduced flexibility and increased risk of injury.

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What is sacralization?

Sacralization is the fusion of the fifth lumbar segment to the sacrum or ilium.

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Which joint in the lumbar spine carries most axial load?

The superior facets of the lumbar spine carry about 20% to 25% of the axial load with a normal intact disc.

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What is spondylolysis?

Spondylolysis is a defect in the pars interarticularis or the arch of the vertebra, caused by a stress fracture or congenital condition.

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What is the function of facet joints in the lumbar spine?

The facet joints in the lumbar spine provide torsional and shear strength, limiting excessive rotation and lateral bending.

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What causes spondylolisthesis?

Spondylolisthesis is a forward displacement of one vertebra over another, often caused by a spondylolysis or degenerative changes.

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What is retrolisthesis?

Retrolisthesis is a backward displacement of one vertebra on another, often caused by degenerative changes.

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What is spondylosis?

Spondylosis refers to degeneration of the intervertebral disc, including changes in its structure and function.

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