Massage & Bodywork Licensing Examination (MBLEx) Quiz: Tissue Injury And Repair
20 questions · exam conditions
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Tissue Injury And RepairQuestion 1 of 20

An athlete's strain happened last week; which phase often begins building new tissue now?

Inflammatory phase
Proliferation phase
Maturation phase
Pre-healing phase
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Massage & Bodywork Licensing Examination (MBLEx) Quiz

Massage & Bodywork Licensing Examination (MBLEx) Quiz: Tissue Injury And Repair

Practice Tissue Injury And Repair in Massage & Bodywork Licensing Examination (MBLEx) with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Tissue Injury And Repair, giving you a quick way to practice the rules, question types, and explanations that matter most for Massage & Bodywork Licensing Examination (MBLEx).

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

An athlete's strain happened last week; which phase often begins building new tissue now?

  1. Inflammatory phase
  2. Proliferation phase (correct answer)
  3. Maturation phase
  4. Pre-healing phase
Explanation: This question tests understanding of the phases of tissue injury and repair, specifically as they relate to massage therapy applications. Tissue repair consists of three primary phases: inflammatory, proliferation, and maturation, each with distinct processes and timelines. In this context, one week post-injury often marks the start of proliferation with new tissue formation. The correct answer identifies the proliferation phase because it involves building new tissue, which is essential for repair. A common distractor is the inflammatory phase, which fails because it incorrectly suggests initial responses dominate after a week. To aid learning, teach students to associate each phase with its primary process and timeline, such as proliferation around days 3-21. Emphasize the role of massage in supporting each step of recovery, ensuring misconceptions about timing are addressed.

Question 2

A client is in the subacute stage of healing from a muscle strain. The primary cellular activity responsible for laying down new collagen fibers to form scar tissue during this phase is performed by which cells?

  1. Macrophages
  2. Mast cells
  3. Neutrophils
  4. Fibroblasts (correct answer)
Explanation: The correct answer is Fibroblasts. In the subacute or proliferation phase of healing, fibroblasts are the key cells that synthesize and secrete collagen, forming the extracellular matrix that becomes scar tissue. Macrophages are primarily involved in phagocytosis (clean-up), mast cells release histamine in the inflammatory phase, and neutrophils are early-responding phagocytes.

Question 3

A client sustained a deep laceration with significant tissue loss that was left open to heal. The surgeon noted that the wound would heal by second intention.

What does healing by 'second intention' imply about the tissue repair process?

  1. The wound edges are close together, resulting in a minimal scar.
  2. The wound has significant tissue loss and heals from the bottom up, resulting in a larger scar. (correct answer)
  3. The healing process will skip the inflammatory phase entirely.
  4. The tissue will regenerate completely with no scar formation.
Explanation: The correct answer is that the wound has significant tissue loss and heals from the bottom up, resulting in a larger scar. Healing by second intention occurs in wounds with separated edges or substantial tissue loss. The body must fill in the gap with granulation tissue, which leads to a longer healing time and more significant scar tissue formation compared to healing by first intention.

Question 4

A client presents for a massage 48 hours after sustaining a Grade I ankle sprain. The ankle is swollen, warm to the touch, and painful. This presentation is consistent with which phase of tissue repair?

  1. Acute inflammatory phase (correct answer)
  2. Subacute proliferation phase
  3. Chronic maturation phase
  4. Remodeling phase
Explanation: The correct answer is Acute inflammatory phase. The cardinal signs of inflammation—swelling (edema), heat, pain, and redness—are most prominent during this phase, which typically lasts for the first 24-72 hours after an injury. The other phases occur after this initial response.

Question 5

An athlete is recovering from a moderate quadriceps strain. Three weeks after the injury, the massage therapist performs gentle cross-fiber friction on the healing tissue.

The primary therapeutic goal of applying this technique during the proliferation/subacute phase is to:

  1. Restart the inflammatory process for better healing.
  2. Encourage a more functional alignment of developing scar tissue. (correct answer)
  3. Decrease blood flow to prevent further swelling.
  4. Numb the nerve endings to reduce all sensation.
Explanation: The correct answer is to encourage a more functional alignment of developing scar tissue. In the subacute and early chronic stages, therapeutic stress like cross-fiber friction can help influence the alignment of newly forming collagen fibers. This encourages the scar to be more pliable and aligned with muscle fibers, reducing adhesions and improving future function.

Question 6

Which of the following is a primary physiological goal of the inflammatory response following soft tissue injury?

  1. To create strong, permanent scar tissue immediately.
  2. To contain the damage and prepare the area for healing. (correct answer)
  3. To realign collagen fibers for maximum tensile strength.
  4. To decrease blood flow permanently to the injured site.
Explanation: The correct answer is to contain the damage and prepare the area for healing. The inflammatory response serves to protect the body by localizing the damage, eliminating injurious agents and debris through phagocytosis, and initiating the subsequent repair process. Creating strong scar tissue and realigning fibers happen in later phases.

Question 7

A client with a history of poorly managed diabetes reports that their injuries tend to heal very slowly. This delayed healing is most often attributed to which complication of their condition?

  1. Increased collagen production
  2. Enhanced inflammatory response
  3. Impaired circulation and nerve function (correct answer)
  4. Chronically low blood glucose levels
Explanation: The correct answer is Impaired circulation and nerve function. Diabetes can lead to peripheral vascular disease and neuropathy. Impaired circulation reduces the delivery of oxygen, nutrients, and immune cells to the injury site, while nerve damage can affect healing signals, both significantly slowing the repair process. High, not low, blood glucose is characteristic of poorly managed diabetes.

Question 8

A client has a two-week-old contusion on their thigh. The discoloration is now yellowish-green. This color change is due to the breakdown of what substance by macrophages?

  1. Lactic acid
  2. Hemoglobin (correct answer)
  3. Myoglobin
  4. Collagen
Explanation: The correct answer is Hemoglobin. A contusion (bruise) is caused by ruptured blood vessels. The initial dark color is from hemoglobin in the escaped red blood cells. As macrophages break down the hemoglobin, it converts to biliverdin (greenish) and then bilirubin (yellowish), causing the characteristic color changes of a healing bruise.

Question 9

Compared to the original tissue it replaces, mature scar tissue is typically characterized as being:

  1. More vascular and more elastic.
  2. Less vascular and less elastic. (correct answer)
  3. More vascular and less elastic.
  4. Less vascular and more elastic.
Explanation: The correct answer is Less vascular and less elastic. Scar tissue, formed primarily of collagen, has a different structure than the original tissue. It generally has a poorer blood supply (less vascular) and is less flexible (less elastic), which can lead to restricted movement and a weaker structure overall.

Question 10

A client describes a 'pulled muscle' in their hamstring. From a tissue injury perspective, this type of injury, involving the tearing of muscle or tendon fibers, is best classified as a:

  1. Sprain
  2. Contusion
  3. Strain (correct answer)
  4. Dislocation
Explanation: The correct answer is Strain. A strain is an injury to a muscle or its attaching tendon. A sprain is an injury to a ligament. A contusion is a bruise caused by impact. A dislocation is a displacement of bones at a joint.

Question 11

The process where neutrophils and macrophages engulf and remove cellular debris, damaged tissue, and pathogens from an injury site is called:

  1. Phagocytosis (correct answer)
  2. Angiogenesis
  3. Fibroplasia
  4. Apoptosis
Explanation: The correct answer is Phagocytosis. This is a critical function of the inflammatory phase where phagocytic cells ('eating cells') clean the wound to prepare it for repair. Angiogenesis is new blood vessel formation, fibroplasia is fibroblast proliferation, and apoptosis is programmed cell death.

Question 12

A client is taking a prescribed corticosteroid medication for an autoimmune condition. How might this medication affect their ability to heal from a soft tissue injury?

  1. It accelerates healing by increasing collagen synthesis.
  2. It has no effect on the tissue repair process.
  3. It can suppress the inflammatory response and slow healing. (correct answer)
  4. It improves circulation to the injured area.
Explanation: The correct answer is that it can suppress the inflammatory response and slow healing. Corticosteroids are potent anti-inflammatory agents. While this can reduce pain and swelling, suppressing the necessary inflammatory phase can delay the overall healing process by inhibiting immune cell function, fibroblast proliferation, and collagen synthesis.

Question 13

A client is three weeks post-hamstring strain and reports feeling significantly better. They are eager to return to playing sports, but the therapist advises caution and a gradual return.

What is the primary reason for the tissue's high susceptibility to re-injury at this stage, despite the reduction in pain?

  1. The inflammatory response is still active, causing tissue weakness.
  2. The muscle has healed but surrounding fascia has not.
  3. Nerve function has not returned, leading to poor coordination.
  4. The new scar tissue is weaker and less organized than original tissue. (correct answer)
Explanation: When you encounter questions about tissue healing timelines, focus on the three phases of tissue repair: inflammation, proliferation, and remodeling. At three weeks post-injury, the client is likely in the early remodeling phase, where pain decreases but structural integrity remains compromised. The correct answer is D because newly formed scar tissue initially lacks the strength and organized fiber arrangement of the original muscle tissue. During the first several weeks of healing, collagen fibers are deposited randomly rather than aligned with the muscle's natural orientation. This makes the tissue mechanically weaker and more prone to re-injury, even though pain has subsided. The tissue needs months to fully remodel and strengthen. Choice A is incorrect because the acute inflammatory phase typically resolves within the first week post-injury. At three weeks, inflammation should be minimal. Choice B misrepresents the healing process—muscle and fascia heal as integrated structures, not separately, and fascia actually heals relatively quickly. Choice C is wrong because nerve function typically returns much earlier than three weeks unless there was significant nerve damage, which isn't indicated in a typical hamstring strain. Remember this key principle for the MBLEx: pain reduction doesn't equal tissue strength. Clients often feel better before their tissues have regained full structural integrity. This disconnect between symptom relief and actual healing is a common theme in rehabilitation questions. Always consider the tissue remodeling timeline when evaluating readiness to return to activity.

Question 14

Four months after a Grade I medial collateral ligament (MCL) sprain, a client reports that their knee feels unstable during cutting maneuvers, despite a lack of pain.

What is the most probable explanation for this persistent instability?

  1. The healed scar tissue is less strong and more stretchy than original tissue. (correct answer)
  2. The ligament healed too short, restricting normal joint movement.
  3. Nerve damage is the only cause since the ligament strength is normal.
  4. Ongoing inflammation is causing muscle weakness around the knee.
Explanation: Even when a ligament heals properly, the scar tissue that replaces the native ligament has different properties. It is typically less strong and more prone to stretching under load compared to healthy ligament tissue. This increased stretchability results in joint laxity, which the client feels as instability, especially during high-demand activities like sports.

Question 15

A client is in the subacute stage of a gastrocnemius strain, approximately 10 days post-injury. The massage therapist's goal is to apply techniques that support the natural healing process and encourage proper tissue formation.

Which cellular activity is most dominant during this specific phase and is the primary target for techniques aimed at organizing new tissue?

  1. Neutrophil and macrophage phagocytosis of cellular debris and pathogens.
  2. Fibroblastic proliferation and the synthesis of Type III collagen. (correct answer)
  3. Conversion of Type III collagen to Type I collagen and scar maturation.
  4. Satellite cell differentiation and fusion to form new multinucleated myotubes.
Explanation: At 10 days post-injury, the client is in the proliferative (or subacute) phase. The hallmark of this phase is the activity of fibroblasts, which proliferate and synthesize a new extracellular matrix, primarily composed of weaker Type III collagen. Massage techniques during this phase aim to gently align these new fibers. Phagocytosis (A) is dominant in the acute inflammatory phase. Collagen conversion (C) is characteristic of the later maturation/remodeling phase. While satellite cell activity (D) is crucial for muscle regeneration, the formation of the connective tissue scaffold by fibroblasts is the primary process that gives the tissue its initial structure and is most influenced by manual therapy for fiber alignment.

Question 16

A client is ten months post-operative from a total knee arthroplasty and has been cleared for massage to address stiffness and thick scar tissue around the incision.

The therapist's techniques are intended to influence the final phase of tissue repair. Which physiological process is the primary target of this intervention?

  1. Increasing angiogenesis to improve blood supply to the newly formed granulation tissue.
  2. Facilitating the realignment of mature Type I collagen fibers along lines of functional stress. (correct answer)
  3. Stimulating myofibroblast contraction to decrease the overall size of the original wound.
  4. Resolving the initial hematoma and controlling the release of inflammatory mediators.
Explanation: At ten months post-op, the tissue is in the maturation or remodeling phase. During this phase, the weaker Type III collagen has been largely replaced by stronger Type I collagen. However, these fibers may be disorganized. The goal of manual therapy is to apply mechanical stress to encourage the realignment of these collagen fibers along lines of tension, which improves the scar's strength and pliability. Angiogenesis (A) and myofibroblast contraction (C) are hallmarks of the earlier proliferative phase. Resolving the hematoma (D) occurs in the acute inflammatory phase.

Question 17

A client reports slowly resolving paresthesia in their ulnar nerve distribution after sustaining a contusion to the medial elbow several weeks ago. There was no laceration, and motor function is intact.

The gradual improvement of sensory function in this client is most likely attributed to which specific neurological repair process?

  1. Successful axonal regeneration through an intact endoneurial tube following Wallerian degeneration. (correct answer)
  2. Formation of a fibrotic neuroma at the injury site, which enhances signal transmission.
  3. Neurogenesis of new sensory neurons within the dorsal root ganglion to replace damaged ones.
  4. Apoptosis of damaged Schwann cells, allowing for more direct nerve-to-tissue communication.
Explanation: This scenario describes a crush-type injury to a peripheral nerve (axonotmesis). The repair process involves Wallerian degeneration, where the axon and myelin sheath distal to the injury break down and are cleared by macrophages and Schwann cells. The intact connective tissue sheath (endoneurium) then acts as a guide tube for the axon to slowly regenerate from the proximal stump towards its target tissue. A neuroma (B) is a painful, disorganized mass that impedes function. Neurogenesis (C) does not occur in adult peripheral neurons. Schwann cells (D) are critical for myelination and guiding repair; their death would impair healing.

Question 18

A new client's health history form indicates a predisposition to forming keloid scars. The client is seeking treatment for a recent, moderate hamstring strain that is now in the early subacute phase.

What is the most critical consideration for the therapist when planning to apply techniques that induce therapeutic inflammation, such as cross-fiber friction?

  1. Aggressive friction is indicated to prevent excessive collagen from forming a keloid.
  2. Keloid scarring only affects the epidermis, so techniques for a deep muscle strain are not a concern.
  3. A cautious approach is needed because the client's exaggerated fibrotic response could be triggered by aggressive techniques. (correct answer)
  4. The history of keloids is unrelated to muscle healing, as it is a dermal-specific genetic condition.
Explanation: Keloid formation is an abnormal healing response characterized by excessive deposition of collagen by fibroblasts, extending beyond the boundaries of the original wound. It represents a systemic, genetic predisposition to an overactive fibrotic process. Any injury that initiates a significant inflammatory and proliferative response, including therapeutic inflammation from deep massage, could potentially trigger a keloid reaction in a susceptible individual. Therefore, a cautious, less aggressive approach is necessary. The other options are incorrect and potentially harmful.

Question 19

An athlete is in the proliferative phase of recovery from a severe quadriceps tear (approximately 3 weeks post-injury). They are compliant with physical therapy and ask the massage therapist for other ways to support the healing process.

Within the scope of a massage therapist, what client education is most relevant to supporting the dominant physiological process occurring at this stage?

  1. Advising complete immobilization of the leg to protect the fragile, newly forming collagen.
  2. Recommending high doses of over-the-counter anti-inflammatory drugs to eliminate residual swelling.
  3. Suggesting they discuss adequate protein and Vitamin C intake with their doctor, as these support collagen synthesis. (correct answer)
  4. Explaining that nutrition is secondary and that only manual therapy can ensure proper fiber alignment.
Explanation: The proliferative phase is characterized by intense metabolic activity, specifically fibroblast proliferation and collagen synthesis. Collagen is a protein, and its synthesis is a complex process that critically requires Vitamin C as a cofactor. While prescribing diets is outside the scope of practice, educating the client on the importance of these basic nutritional building blocks and suggesting they discuss it with their doctor or a nutritionist is appropriate and helpful. Complete immobilization (A) leads to weak, disorganized scar tissue. Suppressing all inflammation (B) can hinder healing. Nutrition (D) is a critical systemic factor.

Question 20

Immediately after a client sustains a minor contusion to their thigh, the therapist observes the initial stages of swelling and redness.

Which sequence accurately describes the immediate vascular events in the tissue that lead to these observable signs?

  1. Sustained vasodilation, followed by decreased vascular permeability to contain inflammation.
  2. Immediate and sustained vasoconstriction to prevent hematoma formation until phagocytes arrive.
  3. Angiogenesis to form new capillary beds, followed by the recruitment of fibroblasts to the site.
  4. Transient vasoconstriction, followed by chemically mediated vasodilation and increased vascular permeability. (correct answer)
Explanation: When you encounter questions about acute injury responses, focus on the body's immediate inflammatory cascade—a predictable sequence of vascular events that occurs within minutes of tissue damage. The correct sequence begins with transient vasoconstriction lasting only seconds to minutes, triggered by the initial trauma and sympathetic nervous system response. This brief constriction is quickly overwhelmed by chemical mediators like histamine, prostaglandins, and nitric oxide, which cause sustained vasodilation (explaining the redness you observe). Simultaneously, these mediators increase vascular permeability by creating gaps between endothelial cells, allowing plasma proteins and fluid to leak into tissues, producing the swelling. Answer A reverses the permeability response—decreased permeability would prevent the characteristic swelling of acute inflammation, not cause it. Answer B describes sustained vasoconstriction, which would produce pallor and reduced blood flow, not the redness observed in early inflammation. The mention of "until phagocytes arrive" also misses the mark since phagocyte recruitment occurs hours later, not in the immediate phase. Answer C describes tissue repair processes (angiogenesis and fibroblast recruitment) that occur days to weeks after injury during the proliferation phase, not in the acute inflammatory response you're witnessing. For MBLEX success, remember that acute inflammation follows a predictable timeline: immediate brief vasoconstriction, then vasodilation plus increased permeability within minutes, followed by cellular recruitment over hours. The observable signs (redness, swelling, heat) directly correlate with these vascular changes—not repair mechanisms.