Question

chapter 4 skin and body membranes 63

1. using the key choices, complete the crossword puzzle by answering each of the clues provided.

key choices
dermis (as a whole)
epidermis (as a whole)
papillary layer
reticular layer
stratum basale
stratum corneum
stratum granulosum
stratum lucidum
stratum spinosum
across

1. epidermal layer containing the oldest cells.
2. major skin area from which the derivatives (hair, nails) arise.
3. vascular region; site of elastic and collagen fibers.

down

1. dermis layer responsible for fingerprints.
2. translucent cells containing keratin.
3. epidermal region involved in rapid cell division and melanin formation.

Explanation:

• Across 4: The stratum corneum is the outermost epidermal layer with the oldest cells.
• Across 5: The epidermis is the major skin area from which hair and nails (skin - derivatives) arise.
• Across 6: The dermis is a vascular region with elastic and collagen fibers.
• Down 1: The papillary layer of the dermis is responsible for fingerprints.
• Down 2: The stratum lucidum has translucent cells containing keratin.
• Down 3: The stratum basale is involved in rapid cell division and melanin formation.

Answer:

Across 4: Stratum corneum
Across 5: Epidermis (as a whole)
Across 6: Dermis (as a whole)
Down 1: Papillary layer
Down 2: Stratum lucidum
Down 3: Stratum basale