Zona

Zona is a term used in anatomy and biology to refer to a zone or encircling area. It is often used in the context of specific structures or regions within the body.

Zona in Anatomy

In anatomy, the term "zona" is used to describe a zone or region within a particular structure or organ. For example, the Zona pellucida is a glycoprotein layer surrounding the plasma membrane of mammalian oocytes. It plays a critical role in the fertilization process by serving as a barrier to sperm penetration.

Zona in Biology

In biology, "zona" is used to describe a zone or region within a particular structure or organism. For example, the Zona fasciculata is a layer of the adrenal cortex in the adrenal gland. It is responsible for producing glucocorticoids, which are hormones that regulate metabolism and immune response.

Zona in Dermatology

In dermatology, "zona" is a term used to describe a band or area of skin affected by a particular condition. For example, Herpes zoster, also known as shingles, is a viral disease characterized by a painful skin rash with blisters in a localized area, typically referred to as a "zona".

See Also

• Zona glomerulosa
• Zona reticularis
• Zona incerta

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