MBLEx Kinesiology Questions and Answers

Question 1

A client is performing shoulder abduction, lifting their arm out to the side. In this movement, the deltoid is the prime mover. Which muscle acts as an antagonist to this action?

Accepted Answer

Latissimus Dorsi

Answer

The latissimus dorsi is a primary adductor of the shoulder, performing the opposite action of abduction. Therefore, it acts as the antagonist to the deltoid during shoulder abduction, relaxing to allow the movement to occur.

Question 2

Flexion and extension, such as in a bicep curl, occur primarily within which anatomical plane?

Accepted Answer

Sagittal Plane

Answer

The sagittal plane divides the body into left and right halves. Movements that involve moving forward and backward, like flexion and extension, occur in this plane.

Question 3

A therapist is using a Proprioceptive Neuromuscular Facilitation (PNF) stretching technique. They ask the client to contract the quadriceps to encourage the hamstrings to relax and lengthen. This neurological principle is known as:

Accepted Answer

Reciprocal Inhibition

Answer

Reciprocal inhibition is the process where muscles on one side of a joint relax to accommodate the contraction of muscles on the other side of the joint. When the agonist (quadriceps) contracts, the antagonist (hamstrings) is neurologically inhibited, allowing it to relax and be stretched more effectively.

Question 4

Which of the following joint types allows for movement in only one plane, such as the elbow or knee?

Accepted Answer

Hinge joint

Answer

A hinge joint, or ginglymus joint, functions like a door hinge, permitting movement in only one plane (uniaxial), which allows for flexion and extension. The elbow (humeroulnar) and interphalangeal joints are classic examples.

Question 5

During a massage, a therapist applies slow, sustained pressure to a tight muscle. After about 30 seconds, the therapist feels the muscle begin to relax. This relaxation response is primarily mediated by which proprioceptor?

Accepted Answer

Golgi Tendon Organ

Answer

The Golgi Tendon Organ (GTO) is a proprioceptor that senses changes in muscle tension. When tension increases to a certain point (as with sustained pressure), the GTO is stimulated and causes a reflex relaxation of the muscle (autogenic inhibition) to protect it from injury.

Massage and Bodywork Licensing Examination Practice Test

Massage and Bodywork Licensing Examination Practice Test

MBLEx Kinesiology Questions and Answers