Lumbopelvic Mechanism and Posture Analysis

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What is a possible consequence of sitting for 8 hours a day?

Decreased lumbar lordosis (correct)

Stressed hip extensors

Increased cervical spine support

Reduced effect on the consistency of the nucleus

How can the morphology of the sacrum be described depending on the viewpoint?

Arch-shaped at the rear view

Acting as a keystone at the inferior view (correct)

Square-shaped at the front view

Anatomically similar to the ilium

Why is it important to identify mechanical loads on the cervical spine?

To maintain proper head weight support

To reduce muscle spasms in the shoulders

To prevent degeneration of the intervertebral disks

To design ergonomic workplaces (correct)

Which muscles provide attachment points for regulating the skull's movement?

Neck muscles Signup and view all the answers

What could lead to nerve root irritation in the cervical spine region?

Degeneration of intervertebral disks Signup and view all the answers

What is the role of the pelvic bones in supporting the pelvis?

To prevent pelvic collapse under weight Signup and view all the answers

What is the impact of standing posture on the tension of the sacroiliac ligaments?

Increase the tension Signup and view all the answers

How does forward tilting of the pelvis affect the trunk and head posture?

Causes both to tilt forward Signup and view all the answers

What corrective action is taken by the body to compensate for anterior pelvic tilt?

Hyperextend the lumbar spine Signup and view all the answers

What is the result of the contraction of the hip extensors and abdominals on the pelvic position?

Posterior tilting Signup and view all the answers

Which posture is accompanied by excessive lumbar curvature (hyperlordosis)?

Anterior pelvic tilt Signup and view all the answers

What does diminished lumbar lordosis typically accompany?

Posterior pelvic tilt Signup and view all the answers

What occurs when the lumbar spine flexes to keep the trunk and head erect?

The front part of the intervertebral disks is compressed and the rear part is stretched. Signup and view all the answers

Which of the following is a result of reduced blood flow from the legs to the heart?

Decreased blood pressure Signup and view all the answers

What is the recommended seat tilt for chairs to promote good posture?

Between 50° backward and 250° forward Signup and view all the answers

What is the term for the maximum compressive load a specified motion segment can withstand without failure?

Spinal Compressive Tolerance Limit (SCTL) Signup and view all the answers

What is the consequence of sitting in a position that causes the pelvis to tilt backward?

Reduced lumbar lordosis Signup and view all the answers

What is the recommended knee position for seated operators operating foot pedals?

Knees in partially flexed position Signup and view all the answers