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Biomechanics 2 - Quiz 2

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Questions and Answers

Which vertebral abnormality is characterized by an exaggerated posterior curvature?

Scoliosis

Lordosis

Spina Bifida

Kyphosis (correct)

Why is it advised to tighten abdominal muscles during lifting?

To act like a balloon expanding the spine (correct)

To decrease intra-abdominal pressure

To increase flexibility

None of the above

The sagittal alignment of the spine is crucial for which of the following reasons?

It allows for maximum flexibility during rotational movements

It facilitates the protection of spinal nerves and blood vessels

It ensures the distribution of mechanical loads across the vertebral bodies and discs (correct)

It primarily supports the articulations at the synovial joints

The atlas vertebra is unique because it:

Has no body Signup and view all the answers

Which ligament becomes thin and narrow in the lumbar region, contributing to disc herniations?

Posterior longitudinal ligament Signup and view all the answers

Intervertebral discs make up what percentage of the height of the vertebral column?

20 - 30% Signup and view all the answers

What type of curvature is the thoracic curvature of the vertebral column?

Primary Signup and view all the answers

Which joint allows for the pivoting of the head?

Atlanto-axial joint Signup and view all the answers

The resistance to compression forces of a curved column like the spine is proportional to:

The square of the number of curves plus one Signup and view all the answers

During what activity does spinal compression increase the most?

Slouched sitting Signup and view all the answers