Question

what is the structure at the tip of the pointer?

Explanation:

🆕 New Concept Discovered: Histological Identification of Skin Appendages
Recognizing glands and hair follicles in integumentary tissue.

Step 1: Analyze the tissue context

The image shows a high-magnification histological section of skin (integumentary system) stained with Hematoxylin and Eosin (H&E).

• On the left, we can see a hair follicle cut longitudinally/obliquely.
• Surrounding the structures is dense irregular connective tissue (dermis), stained bright pink due to collagen fibers.

Step 2: Identify the pointed structure

The pointer labeled 1 (or "I") points directly to a cluster of coiled, tubular epithelial structures located in the dermis near the hair follicle.

• These structures consist of simple cuboidal epithelial cells surrounding small, clear central lumens.
• This coiled, tubular appearance is highly characteristic of a sweat gland (specifically, a merocrine/eccrine sweat gland) cut in various cross-sections.

Answer:

Sweat gland (specifically, an eccrine/merocrine sweat gland)