Coccyx Development and Clinical Abnormalities Quiz

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How many stages of ossification are mentioned in the text?

5 stages

1 stage

4 stages

3 stages (correct)

When does ossification begin according to the text?

25th year of age

10th week of fetal life (correct)

2nd fetal month

10th month of development

When does secondary ossification of the atlas typically complete?

Around birth

25th year of age

Around 8th year of age (correct)

6 months after birth

How many primary ossification centers are there in the axis (C2, Epistropheus)?

7 centers Signup and view all the answers

At what age range do the primary and secondary ossification centers of the axis (C2, Epistropheus) complete?

2-12 years after birth Signup and view all the answers

How many ossification centers are there for C3-C7 and T1-T12 collectively?

10 centers Signup and view all the answers

When does primary ossification of the atlas complete?

Before birth Signup and view all the answers

What is the main purpose of primary ossification in C3-C7 and T1-T12?

Protection of spinal cord Signup and view all the answers

How many ossification centers are there in the lumbar vertebrae?

12 Signup and view all the answers

When does the sacrum ossification typically complete?

25th year of age Signup and view all the answers

How many primary ossification centers are there in the lumbar vertebrae?

7 Signup and view all the answers

At what age does ossification occur in the lumbar or upper thoracic region according to the text?

Around 3-6 years old Signup and view all the answers

How many secondary ossification centers are present in the sacrum?

5 Signup and view all the answers

What is the total number of ossification centers in the lumbar vertebrae and sacrum combined?

19 Signup and view all the answers

What is the definition of spondylolysis?

Fracture in one or both sides of the pars interarticularis Signup and view all the answers

What causes spondylolisthesis?

Elongation of pedicles & Bilateral fraction of Par Articularis Signup and view all the answers

What is tropism in relation to the spine?

Asymmetrical orientation of the articulating facets Signup and view all the answers

What characterizes a transitional vertebra?

Not an abnormal condition Signup and view all the answers

Which region is spondylolysis usually found in?

Lumbar region Signup and view all the answers

What is the clinical abnormality associated with spondylolisthesis?

Slippage of vertebral bodies Signup and view all the answers

What is the typical cause of spondylolisthesis?

Fracture in pedicles Signup and view all the answers

Where is tropism usually found in relation to the spine?

Lumbar region Signup and view all the answers

In the context of embryonic development, what is the function of neurulation?

Formation of the neural tube Signup and view all the answers

What is the primary ossification of the coccyx?

None of the above Signup and view all the answers

What is a common clinical abnormality associated with a hemivertebra?

Occurs in wedged shape on X-ray Signup and view all the answers

What is the cause of a butterfly vertebra?

Insufficiently grow and unite of lateral ossification centers Signup and view all the answers

What does sacralization refer to?

Partial or complete incorporation of L5 into sacrum Signup and view all the answers

In spondylosis, what degenerates due to degeneration of the spinal column?

Vertebrae Signup and view all the answers

What is spina bifida primarily caused by?

Failure of the laminae of the neural arch during embryonic period Signup and view all the answers