1a.

• Merkel Cells
• Langerhans Cells
• Melanocytes
• Keratinocytes

1b.

1. Lipid-laden lamellar granules migrate from the stratum spinosum to the junction of the stratum granulosum and stratum corneum.
2. Granules are released into the intercellular space, creating a hydrophobic seal.
3. Proteases, DNAases, and RNAases are released, which denature the keratinocyte nucleus and organelles
4. Filaggrin causes the polymerization of intermediate filaments forming a keratin core of the corneocyte. Transglutaminase converts the plasma membrane into a hard protein shell
5. Desquamation