What is a simple acinar gland?
Simple acinar glands have secretory cells arranged as expanded ovoids or spheres, which pour their secretion into a central lumen connected to the ductal system of the gland. More than one acinus may be connected with the terminal part of the duct.
Where are simple acinar glands found?
Alveolar gland
| Type | Description | Location |
|---|---|---|
| simple branched acinar | thyroid glands | |
| tubuloalveolar or tubulo-alveolar or tubulo-acinar or compound tubulo-acinar or compound tubuloalveolar | glands that start out as simple branched tubular, and branch further to terminate in alveoli | salivary glands, esophagus mammary glands |
Is sebaceous gland simple branched acinar?
Sebaceous glands are branched acinar (spherical) glands which make an oily substance called sebum. The rounded cells are filled with lipid filled vacuoles, and towards the end of the duct, the cells degenerate to release their contents into the duct – HOLOCRINE secretion.
What is the difference between branched and compound exocrine glands?
Compound exocrine glands have a branching duct system, and can be subclassified into either tubular or acinar, according to the nature of the secretory portion of the gland. In compound tubular glands, the secretory portion comprises secretory tubules.
What are the two main types of glands?
Glands are important organs located throughout the body. They produce and release substances that perform certain functions. Though you have many glands throughout your body, they fall into two types: endocrine and exocrine.
How do you classify a gland?
Glands may be classified in a variety of ways. Perhaps the most basic is classifying glands as either “exocrine” (secretion into a lumen or onto a surface) or “endocrine” (secretion into the circulation via capillaries).
What is an example of a Merocrine gland?
An example of merocrine secretion is the eccrine sweat gland. A well-known apocrine gland is the breastmilk-producing mammary gland. The final subtype of excretion is holocrine, in which the cellular membrane ruptures to release its product into the duct. Sebaceous glands are a representation of holocrine secretion.
What is a gland give an example?
A gland that makes substances such as sweat, tears, saliva, milk, and digestive juices, and releases them through a duct or opening to a body surface. Examples of exocrine glands include sweat glands, lacrimal glands, salivary glands, mammary glands, and digestive glands in the stomach, pancreas, and intestines.
