(i) What is glandular epithelium?
(ii) Classify glands on the basis of mode of pouring of secretion.
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Bonjour!
Glandular Epithelium : Some of the cells of epithelium get specialized for secretion and are called glandular epithelium. Cells of glandular epithelium are columnar or cuboidal in outline.
The glands are formed from the glandular epithelium. A gland may be made up of a cell, tissue or organ.
Classification of glands on the basis of mode of pouring of secretion :
On the basis of the mode of pouring of their secretions, glands are of two types: exocrine and endocrine glands.
(a) Exocrine glands : These glands drain out their secretion to the body surfaces (exterior) and surfaces continuous with it, e.g., alimentary tract, respiratory tract etc.
The secretion is passed out either by ducts or poured directly over the substrate. These include salivary glands, gastric glands, intestinal glands, oil glands, mammary glands, tear glands etc.
(b) Endocrine glands : These glands lack ducts, so these glands are commonly called ductless glands.
They secrete their products (hormones) directly into the fluid bathing the glands i.e., blood and lymph.
The blood and lymph carry hormones to the target organs. Endocrine glands include thyroid, pituitary,
adrenals, hypothalamus etc.
Hope this helps...:)
Glandular Epithelium : Some of the cells of epithelium get specialized for secretion and are called glandular epithelium. Cells of glandular epithelium are columnar or cuboidal in outline.
The glands are formed from the glandular epithelium. A gland may be made up of a cell, tissue or organ.
Classification of glands on the basis of mode of pouring of secretion :
On the basis of the mode of pouring of their secretions, glands are of two types: exocrine and endocrine glands.
(a) Exocrine glands : These glands drain out their secretion to the body surfaces (exterior) and surfaces continuous with it, e.g., alimentary tract, respiratory tract etc.
The secretion is passed out either by ducts or poured directly over the substrate. These include salivary glands, gastric glands, intestinal glands, oil glands, mammary glands, tear glands etc.
(b) Endocrine glands : These glands lack ducts, so these glands are commonly called ductless glands.
They secrete their products (hormones) directly into the fluid bathing the glands i.e., blood and lymph.
The blood and lymph carry hormones to the target organs. Endocrine glands include thyroid, pituitary,
adrenals, hypothalamus etc.
Hope this helps...:)
Answered by
4
Cells of glandular epithelium are columnar or cuboidal in outline. ... A gland may be made up of a cell, tissue or organ. Classification of glands on the basis of mode of pouring of secretion : On the basis of the mode of pouring of their secretions, glands are of two types: exocrine and endocrine glands
Hope it helpss uu!!!❤
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