Question

question 4
1 part | -- of 1 point
drag the labels onto the epidermal layers.
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stratum corneum
stratum lucidum
dermal papilla
basement membrane
stratum basale
epidermal ridge
stratum spinosum
dermis
stratum granulosum

Explanation:

To solve this, we recall the layers of the epidermis (from deepest to most superficial: Stratum basale, Stratum spinosum, Stratum granulosum, Stratum lucidum (in thick skin), Stratum corneum) and related structures. The Dermis is below the epidermis, Dermal papilla and Epidermal ridge are at the dermo - epidermal junction, and Basement membrane is between epidermis and dermis.

1. The deepest epidermal layer (near the dermis) is Stratum basale.
2. Above it is Stratum spinosum.
3. Then Stratum granulosum.
4. In thick skin, Stratum lucidum is above granulosum, then Stratum corneum.
5. Dermis is below the epidermis, Dermal papilla is in the dermis (protruding into epidermis), Epidermal ridge is the epidermal projection into dermis, and Basement membrane is the boundary between epidermis and dermis.

For the labels (assuming the image has regions from top to bottom/outer to inner or vice - versa):

• The outermost layer (scaly, dead cells) is Stratum corneum.
• If present (thick skin), the layer below corneum is Stratum lucidum.
• Below that (with granules) is Stratum granulosum.
• Then Stratum spinosum (spiny - looking cells).
• The deepest epidermal layer (single layer of stem cells) is Stratum basale.
• The layer below epidermis is Dermis.
• Dermal papilla is in the dermis (small projections), Epidermal ridge is the epidermal counterpart, and Basement membrane is between epidermis and dermis.

Answer:

(From top - down or outer - inner, depending on the image's orientation of the epidermal layers and related structures):

• Topmost epidermal layer: Stratum corneum
• Next (if thick skin): Stratum lucidum
• Next: Stratum granulosum
• Next: Stratum spinosum
• Deepest epidermal layer: Stratum basale
• Layer below epidermis: Dermis
• Dermal projection: Dermal papilla
• Epidermal projection: Epidermal ridge
• Boundary layer: Basement membrane

(Note: The exact placement depends on the specific regions marked in the image. For example, if the image shows the layers from outer to inner (top to bottom in the image's epidermal stack), the order would be Stratum corneum, Stratum lucidum (if applicable), Stratum granulosum, Stratum spinosum, Stratum basale, with Dermis below, Dermal papilla and Epidermal ridge at the dermo - epidermal junction, and Basement membrane between epidermis and dermis.)