Massage and Bodywork Licensing Examination MBLEx Kinesiology 1

Question 1

Which muscle of the quadriceps group is the only one that also crosses the hip joint, making it biarticular?

Accepted Answer

Rectus femoris

Answer

The rectus femoris originates on the anterior inferior iliac spine (AIIS), crossing both the hip and knee joints. The three vastus muscles originate on the femur itself and only cross the knee, making them uniarticular.

Question 2

Movements such as flexion and extension occur in which plane of the body?

Accepted Answer

Sagittal plane

Answer

The sagittal plane divides the body into left and right halves. Movements that occur within this plane — primarily flexion and extension — rotate around a mediolateral (side-to-side) axis.

Question 3

Which rotator cuff muscle is primarily responsible for initiating the first 15–30 degrees of shoulder abduction?

Accepted Answer

Supraspinatus

Answer

The supraspinatus, running through the supraspinous fossa and under the acromion, initiates abduction of the arm. The deltoid takes over as the primary abductor after the first 15–30 degrees.

Question 4

A muscle contraction in which the muscle generates force without any change in its length is called:

Accepted Answer

Isometric contraction

Answer

In an isometric contraction, tension is developed but the muscle neither shortens nor lengthens — the joint angle remains constant. This occurs when holding a static position against resistance.

Question 5

What combined actions does the biceps brachii perform at the forearm?

Accepted Answer

Flexion and supination

Answer

The biceps brachii flexes the elbow and supinates the forearm (rotating the palm upward). Supination is actually its most powerful action; the brachialis is a stronger pure elbow flexor.

Massage and Bodywork Licensing Examination Practice Test

Massage and Bodywork Licensing Examination Practice Test

Massage and Bodywork Licensing Examination MBLEx Kinesiology 1