Ducts of which glands are commonly lined by stratified cuboidal epithelium?

Ducts of which glands are commonly lined by stratified cuboidal epithelium?

• A. Endocrine glands
• B. Liver
• C. Sweat glands
• D. Pancreas

Answer: (C)

Stratified cuboidal epithelium is typically found lining the ducts of certain exocrine glands, where a sturdier, multi-layered lining helps protect and channel secretions as they move through ducts. The ducts of sweat glands are a classic example, usually showing two or more layers of cube-shaped cells as they carry sweat from the secretory portion to the skin surface. In contrast, glands that release hormones do so without ducts, so there’s no duct lining to consider. The liver’s bile ducts are lined by simple cuboidal epithelium, not stratified, and pancreatic ducts are also lined by simple epithelium (often cuboidal, with variation in larger ducts toward simple columnar). So the gland whose ducts are commonly lined by stratified cuboidal epithelium is the sweat glands.

Stratified cuboidal epithelium is typically found lining the ducts of certain exocrine glands, where a sturdier, multi-layered lining helps protect and channel secretions as they move through ducts. The ducts of sweat glands are a classic example, usually showing two or more layers of cube-shaped cells as they carry sweat from the secretory portion to the skin surface. In contrast, glands that release hormones do so without ducts, so there’s no duct lining to consider. The liver’s bile ducts are lined by simple cuboidal epithelium, not stratified, and pancreatic ducts are also lined by simple epithelium (often cuboidal, with variation in larger ducts toward simple columnar). So the gland whose ducts are commonly lined by stratified cuboidal epithelium is the sweat glands.