MNT Nail Anatomy & Disorders 4

Question 1

The nail growth rate in healthy fingernails averages approximately:

Accepted Answer

3 mm per month

Answer

Fingernails grow approximately 3 mm per month under normal conditions, with toenails growing more slowly.

Question 2

Yellow nail syndrome is associated with all of the following EXCEPT:

Accepted Answer

Iron-deficiency anemia

Answer

Yellow nail syndrome is linked to lymphedema, respiratory disease, and pleural effusions, not iron-deficiency anemia.

Question 3

Pterygium unguis involves:

Accepted Answer

Forward extension of the cuticle adhering to the nail plate

Answer

Pterygium unguis is the abnormal adherence of the cuticle/proximal fold skin to the nail plate, often due to lichen planus.

Question 4

A subungual hematoma appears as:

Accepted Answer

Dark red or black discoloration beneath the nail plate

Answer

A subungual hematoma is a collection of blood beneath the nail plate following trauma, appearing dark red to black.

Question 5

Which dermatophyte species most commonly causes tinea unguium (onychomycosis) in toenails?

Accepted Answer

Trichophyton rubrum

Answer

Trichophyton rubrum accounts for the majority of dermatophyte-caused onychomycosis cases worldwide.

(MNT) Certified Medical Nail Technician Practice Test