Exploring the Anatomy and Functions of Nails

The video tutorial explains the role of nails within the integumentary system, which also includes skin and hair. It details the structure of the nail, including the nail plate, matrix, and bed, and describes the process of keratinization. The video also covers the growth process of nails, the function of the lunula, and the protective roles of the cuticle and eponym. Additionally, it shares fun facts about nail growth rates and concludes with a call to action for viewers to engage with the content.

What is the primary function of the integumentary system?

• To provide sensory reception

• To protect deeper tissues

• To regulate body temperature

• To produce vitamin D

What component of the nail is responsible for its growth?

• Eponychium

• Nail matrix

• Nail bed

• Cuticle

What process involves the replacement of cytoplasm with keratin protein filaments?

• Mitosis

• Keratinization

• Photosynthesis

• Calcification

What is the visible portion of the nail matrix called?

• Lunula

• Cuticle

• Hyponychium

• Nail plate

What does the lunula indicate about the nail matrix?

• It shows the oldest part of the nail matrix

• It shows cells that have not yet lost their nucleus

• It indicates high keratin levels

• It is a sign of nail disease

Which layer of the nail bed is located immediately beneath the nail plate?

• Subcutaneous layer

• Epidermis

• Basal layer

• Dermis

What is the function of the eponychium?

• To attach the nail to the finger

• To add color to the nail

• To produce new nail cells

• To protect the nail from bacteria

Which nails grow faster?

• Toenails in winter

• Fingernails in summer

• Fingernails in winter

• Toenails in summer

At what age is nail growth slowest?

• Age 4

• Age 10

• Age 30

• Age 20

What is the role of the hyponychium?

• To add moisture to the nail

• To protect the nail tip

• To connect the nail to the finger

• To produce keratin