[Morphology of sweat glands]

Area of Science:

• Dermatology and Anatomy
• Histology of skin appendages

Context:

• Human skin features two primary types of sweat glands: eccrine and apocrine.
• Eccrine glands are ubiquitous and vital for thermoregulation and electrolyte balance.
• Apocrine glands are localized to specific areas and their function remains unclear.

Purpose:

• To differentiate between eccrine and apocrine sweat glands based on their structure and secretion mechanisms.
• To highlight the anatomical components of eccrine glands, including the acrosyringium.
• To introduce apoeccrine glands as a recently identified intermediate type.

Summary:

• Eccrine glands exhibit no cytological changes during secretion, while apocrine glands use decapitation secretion.
• Eccrine glands are distributed throughout the skin, comprising secretory, ductal, and acrosyringium portions.
• Apocrine glands are associated with hair follicles in specific regions, and their physiological role is yet to be determined.

Impact:

• Provides a foundational understanding of sweat gland biology for researchers and clinicians.
• Establishes the anatomical basis for studying sweat gland physiology and pathology.
• Contributes to the knowledge base regarding skin appendages and their involvement in disease processes.