Understanding Skin Structure and Functions

What is the outermost layer of the skin called?

• Dermis

• Epidermis

• Hypodermis

• Stratum Lucidum

Which layer of the epidermis is responsible for providing strength and flexibility to the skin?

• Stratum Corneum

• Stratum Granulosum

• Stratum Spinosum

• Stratum Lucidum

What type of cells produce the fibrous protein keratin?

• Melanocytes

• Keratinocytes

• Fibroblasts

• Adipocytes

Which layer of the epidermis is found only in the thick skin of the fingers, palms, and soles?

• Stratum Corneum

• Stratum Lucidum

• Stratum Granulosum

• Stratum Spinosum

What is the function of melanocytes in the skin?

• Produce keratin

• Produce melanin

• Provide nutrients

• Form friction ridges

Which layer of the dermis is directly beneath the epidermis?

• Reticular Layer

• Papillary Layer

• Hypodermis

• Stratum Corneum

What are the markings on the fingertips that leave oily fingerprints on surfaces we touch called?

• Cleavage Lines

• Friction Ridges

• Papillary Lines

• Dermal Ridges

Which layer of the skin is composed of loose connective tissue and lies below the dermis?

• Epidermis

• Dermis

• Hypodermis

• Stratum Granulosum

What is the deeper layer of the dermis that supplies the skin with oxygen and nutrients?

• Papillary Layer

• Reticular Layer

• Stratum Spinosum

• Stratum Corneum

What are the collagen and elastic fibers in the dermis arranged in parallel bundles called?

• Friction Ridges

• Cleavage Lines

• Papillary Lines

• Dermal Ridges