Which epidermal layer contains cells that are connected by desmosomes to help bind cells together?

Which epidermal layer contains cells that are connected by desmosomes to help bind cells together?

• A. Stratum Corneum
• B. Stratum Granulosum
• C. Stratum Spinosum
• D. Stratum Germinativum

Answer: (C)

Desmosomes hold neighboring keratinocytes together, giving the epidermis its mechanical strength. This cell-to-cell binding is most evident in the stratum spinosum, where the cells are alive and tightly connected by numerous desmosomes, which also give it the characteristic prickly appearance under the microscope. The bottom layer mainly uses hemidesmosomes to attach to the basement membrane, while the upper layers undergo keratinization and eventual shedding, with desmosomes becoming less functional as cells mature and die.

Desmosomes hold neighboring keratinocytes together, giving the epidermis its mechanical strength. This cell-to-cell binding is most evident in the stratum spinosum, where the cells are alive and tightly connected by numerous desmosomes, which also give it the characteristic prickly appearance under the microscope. The bottom layer mainly uses hemidesmosomes to attach to the basement membrane, while the upper layers undergo keratinization and eventual shedding, with desmosomes becoming less functional as cells mature and die.