Nail Anatomy and Functions

This video tutorial explores the anatomy of fingernails, detailing the structure and growth process. It covers the nail plate, nail bed, and surrounding structures like the eponychium, hyponychium, and paronychium. The video explains the lunula and nail color, highlighting the role of blood vessels and the nail matrix. It concludes with a recap and additional resources for learning the integumentary system.

What are the hard structures growing out of the ends of our fingers called?

• Nail roots

• Nail beds

• Nail folds

• Nail plates

Which part of the nail is made of keratinized epithelial cells?

• Paronychium

• Nail plate

• Eponychium

• Nail bed

What is the term for the skin located under the distal edge of the fingernail?

• Paronychium

• Lunula

• Hyponychium

• Eponychium

What is the lighter, half-moon shaped area at the base of the nail called?

• Nail matrix

• Cuticle

• Lunula

• Nail root

Why does the free edge of the fingernail appear white?

• It is made of different material.

• It is exposed to air.

• It lacks blood vessels underneath.

• It is thicker than the rest of the nail.

Where are new nail cells produced?

• Under the lunula

• In the nail matrix

• In the nail bed

• At the distal end of the nail

What is the function of the nail matrix?

• To provide color to the nail

• To produce new nail cells

• To attach the nail to the finger

• To protect the nail bed

Which part of the nail is responsible for pushing older cells forward?

• Eponychium

• Nail root

• Paronychium

• Nail bed

What is the role of the mantle in nail anatomy?

• To cover the nail plate

• To overlap the nail root and matrix

• To provide nutrients to the nail

• To protect the lunula

What are the nail folds composed of?

• Eponychium and paronychium

• Hyponychium and cuticle

• Lunula and nail matrix

• Nail plate and nail bed