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Biology
What is the difference between endocrine glands and exocrine glands?
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2 Replies
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The human body contains several glands that generate numerous secretions such as sweat, saliva, oil, and hormones. These glands may be roughly divided into two groups anatomically depending on whether ducts are present or not. Exocrine glands emit hormones through ducts, whereas endocrine glands release hormones directly.
For further understanding, we will distinguish them based on:
1. Ducts:
Ducts are present in Exocrine glands and absent in Endocrine glands.
2. Secretory products:
Hormones are secreted by endocrine glands.
Sweat, enzymes, mucus and sebum are secreted by exocrine glands.
3. Route of secretion:
Hormones released by the endocrine glands are directly secreted into the blood stream that ultimately reaches the target organ.
The exocrine glands release their products through ducts to an internal organ or to an external surface.
4. Examples
Endocrine glands: Adrenal glands, pituitary glands, thyroid glands and parathyroid glands.
Exocrine glands: Oesophageal glands, Brunner’s glands, salivary glands and liver.
https://my.clevelandclinic.org/health/articles/21201-endocrine-system
https://my.clevelandclinic.org/health/body/22947-exocrine-glands
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Endocrine Glands:-
1. They do not have ducts.
2. They release Hormones.
3. Secretory products are released directly into the bloodstream, eventually reaching the target organ.
4. Thyroid glands, Parathyroid Glands, Pituitary glands are some examples
Exocrine Glands:-
1. They contain ducts.
2. They release sweat, enzymes, mucus and sebum.
3. Secretory products are released to an internal organ or the external surface through a duct.
4. Salivary Glands, Liver, Oesophagus glands are some examples.
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