MBLEx practice questions and answers 2026. Tap an option to test yourself — you'll see the correct answer and a plain-English explanation for every question. Free, no login.
Q21Where does the production of red blood cells take place in the bone?
✓ Correct answer: D. Red bone marrow
Red blood cells are produced (hematopoiesis) with in the red marrow of the bones.
Q22A person with a foggy or dull mind may struggle to comprehend information and make decisions effectively. <br/><br/>Which neurotransmitter might play a role in this?
✓ Correct answer: D. Dopamine
Dopamine is a neurotransmitter that plays a crucial role in various cognitive functions, including attention, memory, learning, and decision-making. It is often referred to as the "reward neurotransmitter" because it plays a significant role in regulating our motivation and pleasure responses. Dopamine deficiency or dysfunction can lead to cognitive impairments, such as difficulty in comprehending information and making decisions effectively. This is why a person with a foggy or dull mind may struggle in these areas.<br/><br/>Option B) Glutamate<br/>Glutamate is the most abundant excitatory neurotransmitter in the central nervous system. It is involved in several brain functions, including learning and memory. However, in the context of a foggy or dull mind, glutamate is unlikely to be the neurotransmitter that plays a role. Glutamate abnormalities are more commonly associated with conditions like epilepsy, Alzheimer's disease, and schizophrenia.<br/><br/>Option C) Histamine<br/>Histamine is a neurotransmitter that is primarily involved in regulating allergic responses, stomach acid secretion, and sleep-wake cycles. While histamine can affect cognitive function to some extent, it is not specifically associated with a foggy or dull mind. Histamine's role in cognition is more related to attention and arousal.<br/><br/>Option D) Norepinephrine<br/>Norepinephrine is a neurotransmitter and hormone that is involved in the body's stress response. It plays a crucial role in increasing alertness and attention. However, norepinephrine deficiency or dysfunction is more likely to cause symptoms such as fatigue, lack of focus, and decreased motivation, rather than a foggy or dull mind.
Q23All of the following are diarthrotic joints, except:
✓ Correct answer: C. Symphysis joints
There are 6 types of diarthrotic joints in the body: hinge, gliding, saddle, pivot, ball and socket and ellipsoidal joints. These are all freely moving joints classified as synovial joints, which are diarthrotic. A symphysis is a slightly moveable cartilaginous joint, such as between vertebrae.
Q24During an initial assessment, a patient expresses discomfort in her palm and fingers, while also experiencing challenges in pronating her forearm and flexing her wrist. <br/><br/>Which specific nerve is likely to be implicated in this scenario?
✓ Correct answer: C. Median nerve
The median nerve arises from the lateral and medial cords of the brachial plexus, with contributions from ventral roots of C5-C6 (lateral cord) and C8 and T1 (medial cord). It is the sole nerve that traverses through the carpal tunnel. The medial pectoral nerve provides innervation to the pectoralis major and minor. Furthermore, the musculocutaneous nerve innervates the anterior arm, while the radial nerve innervates the posterior arm.
Q25All information provided in a health history intake form is considered confidential, unless?
✓ Correct answer: C. The client gives specific written permission
State laws differ regarding the duration for which you are required to retain inactive client information. In any case, you must always maintain the confidentiality of all information unless provided with written permission from the client. HCP stands for Health Care Provider.
Q26In the massage therapy profession, boundaries are extremely important, both for the the client and the therapist. In the world of massage, most recognize five different areas, critical to respecting the boundaries of everyone involved in the session.<br/><br/>Which of the boundaries listed below is not commonly considered?
✓ Correct answer: A. Property boundaries.
Property boundaries are not the focus of the massage therapy boundaries, this is a different type of boundary considered with possessions and ownership. The boundaries of a massage therapist are critical to the protection of both the therapist and the client in areas of abuse, both physical and mental. Most consider that there are five different areas to be adhered to: professional boundaries, emotional boundaries, sexual boundaries, social boundaries, and physical boundaries.
Q27In a therapist vs. client relationship, the professional boundaries are critical.<br/><br/>Which of the statements listed below is considered maintenance of appropriate boundaries?
✓ Correct answer: D. Being aware of the power difference that exists in the relationship.
Maintaining good professional boundaries is critical to a professional career that is successful and profitable.<br/><br/>A massage therapist must remain cognizant of the power difference, weighing heavily in the therapist side.<br/><br/>Ethics policies do not allow for personal conversations or phone calls/texts between a therapist and a client.<br/><br/>Boundaries have eroded when the therapist or client believe that the therapist is the only one that can treat the client.<br/><br/>Anything personal shared between the two, is strictly frowned upon.
Q28The <code>________</code> is a summary of the standards of conduct, defining the behavior of a massage therapist.
✓ Correct answer: C. The code of ethics.
The code of ethics defines the ethical behavior of the therapist and is a prerequisite for admission and ongoing membership in the NAMT, the National Association of Massage Therapists. This statement includes points such as representing qualifications accurately, non-discrimination statements, and all HIPAA regulations.
Q29What is postural symmetry?
✓ Correct answer: A. The circumference of the muscle mass in the two legs is similar.
Symmetry is “similar".
Q30What circumstance would cause pooling of blood in the lower extremities?
✓ Correct answer: B. Standing still for extended periods
During movement, muscle compression on the vessels moves blood in the legs. There will be reduced blood movement when someone is standing in a static position. The incorrect answers would decrease the blood pooling.
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Theory