Integumentary System

What is the main function of the skin?

• Synthesizes vitamin D

• Maintains balance of fluids

• Protects against infection

• All of the above

Which layer of the skin is responsible for synthesizing melanin?

• Epidermis

• Dermis

• Subcutis

• Hypodermis

What is the role of keratinocytes in the skin?

• Synthesize melanin

• Maintain balance of fluids

• Produce keratin

• Regulate body temperature

Which layer of the skin contains immune system cells?

• Epidermis

• Dermis

• Subcutis

• Hypodermis

What is the outermost layer of the epidermis called?

• Stratum corneum

• Stratum lucidum

• Stratum granulosum

• Stratum spinosum

Which layer of the skin contains collagen and elastin fibers?

• Epidermis

• Dermis

• Subcutis

• Hypodermis

What is the function of the papillary layer in the dermis?

• Insulation

• Energy storage

• Shock absorption

• Formation of friction ridges

Which layer of the skin contains capillaries and blood vessels?

• Epidermis

• Dermis

• Subcutis

• Hypodermis

What is the role of Langerhans cells in the skin?

• Synthesize melanin

• Maintain balance of fluids

• Ingest unwanted invaders

• Regulate body temperature

What is the deepest layer of the epidermis called?

• Stratum corneum

• Stratum lucidum

• Stratum granulosum

• Stratum basale