
a.
To determine: The type of muscle contraction that occurs when an individual lies on the back with the hips and knees in extension and raises the right leg toward the ceiling.
Introduction: The hip joint is a ball-and-socket synovial joint that connects the leg to the trunk of the body. The hip joint is the most proximal of the lower extremity.
b.
To determine: The class of lever that is demonstrated by the hip flexors when an individual lies on the back with the hips and knees in extension and raises the right leg toward the ceiling.
c.
To determine: The force that the hip flexors want to exert at the pelvis when an individual lies on the back with the hips and knees in extension and raises the right leg toward the ceiling.
d.
To determine: The muscle group that needs to contract in order to prevent the anterior tilt of the pelvis when an individual lies on the back with the hips and knees in extension and raises the right leg toward the ceiling.

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Chapter 18 Solutions
Clinical Kinesiology and Anatomy
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