Podcast
Questions and Answers
What is the primary function of exocrine glands?
What is the primary function of exocrine glands?
- To filter blood and regulate body temperature.
- To transport nutrients across cell membranes.
- To release hormones directly into the bloodstream.
- To produce and release secretions into ducts. (correct)
Which of the following is an example of a mixed gland?
Which of the following is an example of a mixed gland?
- Salivary gland
- Adrenal gland
- Pancreas (correct)
- Thyroid gland
What characterizes unicellular glands?
What characterizes unicellular glands?
- They consist of a single cell that secretes substances. (correct)
- They can only release substances through unbranched ducts.
- They are made up of multiple cells forming complex structures.
- They secrete hormones into the bloodstream.
Which type of exocrine gland has branched ducts?
Which type of exocrine gland has branched ducts?
Which of the following is NOT a secretion of exocrine glands?
Which of the following is NOT a secretion of exocrine glands?
How are multicellular glands classified?
How are multicellular glands classified?
Which type of gland has secretory portions that are acinar?
Which type of gland has secretory portions that are acinar?
What substance is secreted by sweat glands?
What substance is secreted by sweat glands?
Flashcards
What are exocrine glands?
What are exocrine glands?
Exocrine glands release their products into ducts that empty onto the surface of a covering and lining epithelium.
What are some examples of exocrine gland secretions?
What are some examples of exocrine gland secretions?
Examples include sweat, oil, earwax, saliva, and digestive enzymes.
What are mixed glands?
What are mixed glands?
Mixed glands, like the pancreas, contain both endocrine and exocrine tissue.
What are unicellular glands?
What are unicellular glands?
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What are multicellular glands?
What are multicellular glands?
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How are multicellular glands classified based on ducts?
How are multicellular glands classified based on ducts?
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How are multicellular glands classified based on secretory portions?
How are multicellular glands classified based on secretory portions?
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Give examples of multicellular glands.
Give examples of multicellular glands.
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Study Notes
Exocrine Glands
- Exocrine glands release products into ducts that lead to the surface of the epithelium.
- Examples include mucus, sweat, oil, earwax, saliva, and digestive enzymes.
- Examples of exocrine glands are sudoriferous (sweat) glands and salivary glands.
Mixed Glands
- Some glands in the body, such as the pancreas, ovaries, and testes, contain both endocrine and exocrine tissues.
Endocrine Glands
- Description: Secretory products (hormones) diffuse into the blood after passing through interstitial fluid.
- Location: Examples include the pituitary gland, pineal gland, thyroid, and parathyroid glands, adrenal glands, pancreas, ovaries, testes, and thymus.
- Function: Produce hormones that regulate various body activities.
Exocrine Glands (Continued)
- Description: Secretory products are released into ducts.
- Location: Examples include sweat, oil, and earwax glands of the skin; digestive glands (such as salivary glands) that secrete into the mouth; and the pancreas that secretes into the small intestine.
- Function: Produce substances like sweat, oil, earwax, saliva, or digestive enzymes.
Structural Classification of Exocrine Glands
- Exocrine glands are categorized into unicellular and multicellular types.
- Unicellular glands consist of a single cell. An example is the goblet cell, which secretes mucus onto the apical surface of an epithelium.
- Multicellular glands are composed of many cells forming microscopic or macroscopic structures.
- Examples of multicellular glands include sudoriferous (sweat), sebaceous (oil), and salivary glands.
- Multicellular glands are classified based on two criteria:
- Whether the ducts are branched or unbranched.
- The shape of the secretory portions of the gland.
- If the duct does not branch, it is a simple gland.
- If the duct branches, it is a compound gland.
- Secretory portions are categorized as tubular or acinar (rounded).
- Glands with both types are called tubuloacinar.
- Acinar glands are also known as alveolar glands.
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