Multiple Choice
Which statement best distinguishes endocrine glands from exocrine glands in glandular epithelial tissue?
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4. Tissues & Histology
Glandular Epithelial Tissue
Multiple Choice
In glandular epithelial tissue, how are exocrine glands different from endocrine glands?
A
Exocrine glands are always unicellular, whereas endocrine glands are always multicellular.
B
Exocrine glands have no secretory cells and mainly provide structural support, whereas endocrine glands are composed entirely of goblet cells.
C
Exocrine glands release hormones directly into the bloodstream, whereas endocrine glands release sweat and enzymes through ducts onto body surfaces.
D
Exocrine glands secrete their products through ducts onto an epithelial surface, whereas endocrine glands secrete hormones into interstitial fluid and then the bloodstream.
Verified step by step guidance1
Step 1: Understand the basic definitions of exocrine and endocrine glands. Exocrine glands secrete their products onto epithelial surfaces, usually through ducts, while endocrine glands release hormones directly into the bloodstream without ducts.
Step 2: Identify the mode of secretion for exocrine glands. These glands use ducts to transport substances such as sweat, enzymes, or mucus onto body surfaces or into body cavities.
Step 3: Identify the mode of secretion for endocrine glands. These glands secrete hormones into the interstitial fluid, from where the hormones diffuse into nearby blood vessels to be transported throughout the body.
Step 4: Recognize the cellular composition and function differences. Exocrine glands often have secretory cells specialized for producing substances like enzymes or mucus, whereas endocrine glands consist of hormone-producing cells that regulate physiological processes.
Step 5: Summarize the key distinction: exocrine glands have ducts and release their products externally or into cavities, while endocrine glands are ductless and release hormones internally into the bloodstream.
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