Integumentary System | MrMacpui - Free Printable

Based on this zoomed-in view, I can clearly see the three distinct layers of the skin. The topmost layer is thin and contains structures like pores, hair, and oil glands, which are all part of the epidermis. The middle layer is thicker, red, and contains sweat glands, hair follicles, nerves, and blood vessels; this is the dermis. The bottom layer is yellowish and fatty, which is characteristic of the subcutaneous layer (also known as the hypodermis).

Now that I have identified the layers in the diagram, I will proceed to answer the first section of the worksheet by assigning the correct names to each box.

For the second section, I need to match the descriptions to the correct layer. I will use my knowledge of skin anatomy:
- The epidermis is the outermost layer, made of dead skin cells, and produces melanin.
- The dermis is the middle layer, containing blood vessels, nerves, and sweat glands, and it absorbs impact.
- The subcutaneous layer is the innermost layer, made of fat, and it also absorbs impact.

For the third section, I need to identify the type of injury based on the description:
- A burn involves charring of the skin and can damage all layers.
- A bruise involves ruptured blood vessels under the skin.
- A cut involves slicing of the skin.

I will now provide the complete solution to the worksheet.

Solution:

Section 1: Drag and drop the name of the layer to its correct position.

- The top box corresponds to the Epidermis.
- The middle box corresponds to the Dermis.
- The bottom box corresponds to the Subcutaneous layer.

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Section 2: Identify each description as part of the Epidermis, Dermis, or Subcutaneous.

1. Absorbs a small amount of impact. → Dermis (and also Subcutaneous layer, but primarily the dermis for minor impacts)
2. Produces melanin. → Epidermis (melanocytes in the epidermis produce melanin)
3. Contains nerve endings. → Dermis (nerve endings are located in the dermis)
4. Is made of 1-50 layers of dead skin. → Epidermis (the stratum corneum of the epidermis is made of dead skin cells)
5. Innermost layer. → Subcutaneous layer
6. Blood vessels pass through this layer. → Dermis (blood vessels are primarily in the dermis)

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Section 3: Identify the following skin injuries as bruise, cut, or burn.

7. It can cause damage to all 3 layers of the skin. It involves charring of the skin and leaving behind a scar. → Burn
8. Blood vessels rupture due to impact/trauma. → Bruise
9. Slicing of the skin. May or may not leave a scar. → Cut
10. Causes blisters to appear. → Burn (blisters are a common sign of a second-degree burn)
11. Blood oxidizes under the epidermis. → Bruise (this describes the discoloration seen in a bruise)