📌 Exocrine glands release their products onto an epithelial surface or through an excretory duct, whereas endocrine glands release their products directly into the blood.
1. How does an exocrine gland differ from an endocrine gland in the route used to release its products?
2. Which structural feature identifies a tubular gland?
3. What is the defining structural arrangement of an acinar gland?
How do exocrine glands release their products?
Onto an epithelial surface or through an excretory duct.
How do endocrine glands release their products?
Directly into the blood.
What defines a tubular gland's secretory portion?
It is organized as a tube, which may be simple straight, branched straight, or simple convoluted.
What shape characterizes an acinar gland's functional units?
Spherical units with narrow lumina assembled in grape-like clusters.
What are the three types of endocrine glands?
Trabecular, diffuse, and follicular glands.
Which glands are examples of trabecular, diffuse, and follicular endocrine glands?
Adrenal and anterior pituitary (trabecular), Leydig cells in testis (diffuse), thyroid (follicular).
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