Massage and Bodywork Licensing Examination MBLEx Anatomy and Physiology 1

Question 1

Which bone forms the posterior portion of the hard palate?

Accepted Answer

Palatine bone

Answer

The hard palate is formed by two bones: the palatine processes of the maxilla anteriorly, and the horizontal plates of the palatine bones posteriorly. The vomer forms the nasal septum, and the sphenoid is part of the cranial floor.

Question 2

Which neurotransmitter is released at the neuromuscular junction to trigger skeletal muscle contraction?

Accepted Answer

Acetylcholine

Answer

Acetylcholine (ACh) is released from the motor neuron terminal and binds to nicotinic receptors on the motor end plate, generating an action potential that initiates the contraction cascade within the muscle fiber.

Question 3

The sinoatrial (SA) node, which sets the heart's natural rhythm, is located in which structure?

Accepted Answer

Right atrium

Answer

The SA node is embedded in the posterior wall of the right atrium, near the opening of the superior vena cava. It generates spontaneous electrical impulses that spread through the myocardium to coordinate each heartbeat.

Question 4

Which structure lines the joint cavity and is responsible for producing synovial fluid?

Accepted Answer

Synovial membrane

Answer

The synovial membrane is the inner lining of a joint capsule. It secretes synovial fluid, which reduces friction between articular surfaces and delivers nutrients to the avascular articular cartilage.

Question 5

In which layer of the epidermis are melanocytes primarily located?

Accepted Answer

Stratum basale

Answer

Melanocytes reside mainly in the stratum basale, the deepest layer of the epidermis. They produce melanin granules that are transferred to surrounding keratinocytes to absorb ultraviolet radiation and protect underlying tissues.

Massage and Bodywork Licensing Examination Practice Test

Massage and Bodywork Licensing Examination Practice Test

Massage and Bodywork Licensing Examination MBLEx Anatomy and Physiology 1