Nail Structure and Function Concepts

In this video, Karrar Hayder from Baghdad Medical College discusses the nail plate, a key structure of the nail. He recaps the nail bed and lunula before explaining the nail plate's composition, structure, and function. The nail plate is made of keratinized onychocytes and is transparent, allowing the pinkish color of the blood vessels beneath to show through. The video also covers the grooves and ridges that help the nail plate attach to the nail bed and grow correctly. Finally, the nail plate's shape is influenced by the underlying bone, and its main function is to protect the nail bed.

What was the main focus of the previous video discussed in the introduction?

• The function of the nail plate

• The germinal matrix and sterile matrix

• The color of the nail plate

• The structure of the nail plate

What is the nail plate primarily composed of?

• Blood vessels

• Living cells

• Onychocytes

• Nerve endings

From where does the nail plate emerge?

• The lateral nail folds

• The proximal nail fold

• The distal edge

• The lunula

What is the distal edge of the nail plate characterized by?

• Being covered by the lunula

• Being attached to the germinal matrix

• Being a free border

• Being bordered by the paronychium

How is the nail plate attached to the nail bed?

• Loosely with the sterile matrix

• Strongly with the germinal matrix

• Strongly with the sterile matrix

• Loosely with the paronychium

Why does the nail plate appear pinkish in color?

• Because of the blood vessels in the nail bed

• Because of the onychocytes

• Due to the presence of melanin

• Due to the presence of keratin

What role do the grooves and ridges on the nail plate play?

• They protect the nail bed

• They produce new cells

• They provide color to the nail

• They help in the attachment and growth direction

What is the main function of the nail plate?

• To produce new cells

• To give color to the nail

• To protect the nail bed

• To provide flexibility

What determines the shape of the nail?

• The underlying bone

• The number of onychocytes

• The thickness of the nail plate

• The color of the nail plate