Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

4. Tissues & Histology

Introduction to Muscle Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Muscle Tissue

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Multiple Choice

A nurse is caring for a client experiencing muscle fasciculations. Fasciculations appear as:

Sustained muscle contractions causing rigidity

Sudden, jerky movements of an entire limb

Slow, writhing movements of the limbs

Involuntary, brief, and visible muscle twitches under the skin

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Verified step by step guidance

Understand the term 'muscle fasciculations': These are involuntary, brief, and visible muscle twitches that occur under the skin. They are caused by spontaneous depolarization of lower motor neurons or muscle fibers.

Differentiate fasciculations from other types of muscle movements: Fasciculations are distinct from sustained muscle contractions (rigidity), sudden jerky movements (myoclonus), or slow writhing movements (athetosis). Each of these has different underlying causes and presentations.

Recognize the clinical significance: Muscle fasciculations are often benign but can be associated with neurological conditions such as amyotrophic lateral sclerosis (ALS) or peripheral nerve irritation.

Correlate the description with the correct answer: The problem specifies 'involuntary, brief, and visible muscle twitches under the skin,' which matches the definition of fasciculations.

Apply this knowledge in clinical practice: When observing fasciculations, assess the patient for other neurological symptoms to determine if further investigation is needed.