The White Half-Moon Visible Under the Proximal Part of a Fingernail

question 12

Multiple Choice

The white half-moon visible under the proximal part of a fingernail is the

• A) cuticle.
• B) bed.
• C) matrix.
• D) lunule.

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Definitions:

Testosterone

Steroid hormone secreted primarily by the testes; aids in spermatogenesis, maintenance and development of male reproductive organs, secondary sexual characteristics, and sexual behavior.

Mullerian-Inhibiting Hormone

A hormone responsible for the regression of Mullerian ducts in the male embryo, crucial for male sex differentiation.

Reproductive Structures

Reproductive structures are specialized organs and tissues in organisms that are involved in reproduction, including testes in males and ovaries in females among others.

Mesonephros

Mesonephros refers to the middle set of embryonic kidneys that serve as a temporary kidney structure during early development in vertebrates.