A patient presents with difficulty moving their limbs but has normal heartbeat and digestion. Which muscle tissue is most likely affected?

Appeared in: NCL (Northern Coalfields Limited)-NO

Explanation

Skeletal muscles are responsible for the voluntary movement of the body, including the limbs.
The patient's primary complaint is difficulty moving limbs, which is a function controlled exclusively by skeletal muscle.
Since the heartbeat (cardiac muscle) and digestion (smooth muscle) are normal, these tissues are not the primary site of the problem.
Therefore, the symptoms are localized to the skeletal muscle system.

Option A: Involuntary muscle is a functional category that includes cardiac and smooth muscle. The patient's symptoms show these are working normally, making this option incorrect.
Option B: The question explicitly states the patient has a normal heartbeat. Cardiac muscle is found only in the heart, so it is unaffected.
Option C: The question states that the patient's digestion is normal. Smooth muscles line the digestive tract, so they are functioning correctly.

Visual 1: Diagram - An illustration comparing the microscopic appearance of skeletal, cardiac, and smooth muscle fibers, highlighting features like striations, nuclei, and cell shape.
Visual 2: Anatomical Chart - A chart showing the location of the three muscle types in the human body (e.g., biceps for skeletal, heart for cardiac, and stomach/intestines for smooth).

Clinical Relevance

Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Types and functions of muscle tissue in acute care settings.
Nurses frequently care for patients with skeletal muscle disorders, such as muscular dystrophy, myasthenia gravis, or atrophy from disuse. Assessment of muscle strength and motor function is a key nursing skill.
Understanding the different muscle types is crucial for interpreting patient symptoms. For example, a nurse must recognize that difficulty breathing could be due to weakness in the skeletal muscles of the diaphragm.
What if? If the patient presented with difficulty moving limbs AND a drooping eyelid (ptosis) and difficulty swallowing, the nurse should suspect a neuromuscular junction disorder like Myasthenia Gravis, which primarily affects skeletal muscles but can impact those controlling eyes and throat.

How to Approach the Question

First, analyze the patient's symptoms presented in the stem. Separate the abnormal findings from the normal ones.
Abnormal: Difficulty moving limbs.
Normal: Heartbeat and digestion.
Next, recall the three main types of muscle tissue and their primary functions and locations.
Match each symptom (or lack thereof) to the corresponding muscle type. Difficulty with limb movement points to skeletal muscle. Normal heart function rules out cardiac muscle. Normal digestion rules out smooth muscle.
Evaluate the options based on this matching process to identify the most likely affected tissue.

Concept Tested & Keywords

Concept Tested: Types and functions of muscle tissue
Stem keywords: difficulty moving limbs, normal heartbeat, normal digestion, muscle tissue
Lead-in keywords: most likely affected
Clinical cues: The combination of specific motor deficits (limb movement) with normal autonomic functions (heartbeat, digestion) is the key to differentiating the affected tissue.

QMWhBg-wqYMRs6bGPXEaSP

Practise the full NCL (Northern Coalfields Limited)-NO

Attempt every question from this paper in a timed mock, then review the full solution for each one.