OMT Kinesiology & Biomechanics 1

Question 1

Which plane of the body divides it into anterior and posterior halves?

Accepted Answer

Frontal (coronal) plane

Answer

The frontal (coronal) plane divides the body into anterior (front) and posterior (back) halves.

Question 2

Which type of muscle contraction occurs when the muscle produces force while lengthening?

Accepted Answer

Eccentric contraction

Answer

Eccentric contraction occurs when a muscle generates force while simultaneously lengthening, such as lowering a weight under control.

Question 3

The axis of rotation for flexion and extension of the elbow joint runs in which direction?

Accepted Answer

Medial-lateral

Answer

Flexion and extension at the elbow occur around a medial-lateral (transverse) axis, allowing movement in the sagittal plane.

Question 4

What term describes the ratio of force output to force input in a lever system?

Accepted Answer

Mechanical advantage

Answer

Mechanical advantage is the ratio of output force to input force in a lever system, indicating the efficiency of force transmission.

Question 5

The biceps brachii crosses how many joints, making it a multi-joint muscle?

Accepted Answer

Two joints

Answer

The biceps brachii crosses both the shoulder and elbow joints, classifying it as a bi-articular (two-joint) muscle.

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