Epidermis

How are the cells in the epidermis primarily arranged?

• In a single layer

• In clusters

• In layers or strata

• In a circular pattern

What separates the epidermis from the dermis?

• A layer of fat

• A basement membrane

• A layer of muscle

• A layer of connective tissue

What is keratinization?

• The process by which cells move outward through the layers of the epidermis

• The process of cell division in the dermis

• The formation of new blood vessels in the skin

• The breakdown of keratin in the epidermis

What malfunction occurs in psoriasis?

• Malfunction in pigmentation

• Malfunction in keratinization

• Malfunction in collagen production

• Malfunction in melanin production

Which layer of the epidermis has limited cell division?

• Stratum corneum

• Stratum spinosum

• Stratum lucidum

• Stratum granulosum

Which layer of the epidermis is responsible for forming a waterproof barrier?

• Stratum germinativum

• Stratum spinosum

• Stratum granulosum

• Stratum corneum

What happens to the nucleus and other organelles in the superficial layers of the epidermis?

• They multiply

• They degenerate and the cell dies

• They become more active

• They produce more keratin

Which layer of the epidermis is a thin, clear zone found only in thick skin?

• Stratum corneum

• Stratum spinosum

• Stratum lucidum

• Stratum granulosum

Which layer of the epidermis is the most superficial and consists of cornified cells?

• Stratum germinativum/basale

• Stratum spinosum

• Stratum corneum

• Stratum granulosum

Which layer of the epidermis contains dead cells with a hard protein envelope and is surrounded by lipids?

• Stratum basale

• Stratum spinosum

• Stratum corneum

• Stratum granulosum