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

5. Integumentary System

Introduction to the Integumentary System

Anatomy & Physiology

5. Integumentary System

Introduction to the Integumentary System

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Multiple Choice

After a nurse has inserted a peripheral IV catheter, which layer of the skin has the catheter most likely penetrated?

Dermis

Stratum corneum

Epidermis

Hypodermis

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Verified step by step guidance

Understand the structure of the skin: The skin is composed of three main layers—epidermis (outermost layer), dermis (middle layer), and hypodermis (innermost layer). Each layer has distinct functions and characteristics.

Review the function of the dermis: The dermis contains blood vessels, nerves, and connective tissue. Peripheral IV catheters are inserted to access blood vessels, which are located in this layer.

Eliminate incorrect options: The stratum corneum is part of the epidermis and is the outermost layer of dead cells, which does not contain blood vessels. The hypodermis is primarily composed of fat and connective tissue, and while it provides cushioning, it is not the primary target for IV catheter insertion.

Focus on the dermis: Since the dermis contains blood vessels, it is the layer most likely penetrated by the catheter during insertion. This aligns with the purpose of IV catheter placement, which is to access the circulatory system.

Confirm the correct answer: Based on the anatomical structure and function of the skin layers, the dermis is the correct answer for the layer most likely penetrated by the peripheral IV catheter.