Question: what glands release their product directly into hair follicles
Answer: Differences Between Eccrine & Apocrine Sweat Glands Eccrine Glands Apocrine Glands Overall diameter of secretory coil 500 - 700 μm 800 μm Diameter of individual secretory tubule 30 - 40 μm 80 - 100 μm Composition of secretory unit single layer , mixed clear cells & dark cells single layer columnar cells Composition of ductal epithelium two or more layers of cuboidal cells double layer of cuboidal cells Duct opens to skin surface hair follicle , sometimes nearby skin surface