If a Muscle Crosses the Spinal Joints of the Trunk

question 19

Multiple Choice

If a muscle crosses the spinal joints of the trunk laterally on the right side with a vertical direction to its fibers,what eccentric function will it most likely have?

• A)restrains/slows contralateral rotation of the trunk at the spinal joints
• B)restrains/slows right lateral flexion of the trunk at the spinal joints
• C)restrains/slows left lateral flexion of the trunk at the spinal joints
• D)restrains/slows ipsilateral rotation of the trunk at the spinal joints

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Definitions:

Ejection

The process of driving or pushing something out.

Diastole

The phase of the heart cycle during which the heart muscles relax and the chambers fill with blood.

AV Valves

Atrioventricular valves; heart valves located between the atria and ventricles that prevent backflow of blood.

Isovolumetric Contraction

A phase in the cardiac cycle where the ventricles contract with no change in volume because all heart valves are closed.