Integumentary System

Which of the following is NOT a function of the skin?

• Synthesis of vitamin C

• Protection from environment

• Regulation of body temperature

• Balancing fluid concentration

Which epidermal cells ingest foreign invaders & activate the immune system?

• Keratinocytes

• Melanocytes

• Langerhans Cells

• Merkel Cells

Which protein protects the nucleus of epithelial cells from UV radiation?

• Keratin

• Melanin

• Antibodies

• Stratum

Which layer of the epidermis is where new skin cells are made?

• Stratum basale

• Stratum corneum

• Stratum lucidum

• Stratum granulosum

The outermost layer of the epidermis is the...

• Stratum corneum

• Stratum lucidum

• Stratum granulosum

• Stratum spinosum

The reticular dermis is composed of...

• Keratinocytes

• Connective tissue

• Adipose tissue

• Cartilage

Which of the following is NOT a function of the hypodermis?

• Insulation

• Energy storage

• Anchors the skin to muscles

• Protection from environment

The outermost layer of the hair follicle is called the...

• Cuticle

• Plexus

• Cortex

• Medulla

Describe the function of the arrector pili.

• Anchor hair to the hypodermis

• Contract to raise hair upright

• Perceive touch

• Supply hair with nutrients

The area of growth in a nail is called the...

• Nail root

• Nail plate

• Nail bed

• Nail matrix