The berry-shaped termination of an exocrine gland, where the secretion is produced, is acinar in form, as is the alveolar sac containing multiple alveoli in the lungs.

Nov 21, 2023 · What is acinar gland? An acinar gland is a secretory collection of epithelial tissue considered an exocrine gland. An acinar gland has a spherical structure and the secretory duct...

Jun 24, 2017 · A gland is a group of cells or a “secreting organ” that excretes a chemical substance. This substance can take the form of hormones, sweat, saliva, mucus, or acids (i.e. HCl acid in gastric glands).

2 days ago · However, because elevated amylase levels can also occur in salivary gland conditions, pancreatic-specific isoenzymes improve diagnostic accuracy. Roles In Digestive Functions. Acinar cells coordinate the enzymatic breakdown of macronutrients, ensuring proteins, fats, and carbohydrates are efficiently processed for absorption.

Serous acinar cells are the primary secretory cells of serous glands. They have a characteristic pyramidal shape, with a broad base that rests on the basement membrane and a narrow apex that faces the lumen of the acinus. [2]

Oct 30, 2023 · The exocrine component of the pancreas makes up about 98% of the pancreatic tissue. It is comprised of densely packed serous acinar (tubuloacinar) glands. These glands are called pancreatic acini, which represent the secretory units of the pancreas. They are formed out of simple epithelium.

A compound acinar gland is composed entirely of acinar (alveolar) secretory units. Each spherical acinus is composed of cells with prominent, spherical nuclei and numerous secretory granules. The lumen of each acinus is very narrow, appropriate for the …

Oct 30, 2023 · Sebaceous glands are simple, branched, acinar, exocrine glands located within the skin. They secrete a fatty substance sebum , into the follicular duct , which surrounds the hair shaft . Sebum helps keep the skin flexible and prevents water loss.

Each sebaceous gland is composed of multiple acini attached to a single, unbranched duct. Several glands are pictured here. The secretory product, sebum, is composed of a mixture of lipids, that accumulate in the cells as they progress from the periphery to the center of the acinus.

a gland in which the secretory unit(s) has a saclike form and an obvious lumen; for example, the active mammary gland.

Secretory units of exocrine glands are organized either into tubules or spherical acini (sing. acinus), also called alveoli (sing. alveolus). A unicellular gland, the simplest exocrine gland, is a single secretory cell that remains in the epithelium where it forms.

Several acini form a pancreatic lobule, which is separated from other lobules by thin layers of connective tissue. A cluster of cells composing the smallest unit of a compound gland. In the pancreas, these cells are the site of production of precursor digestive enzymes. A malignant neoplasm arising in the glandular epithelial cells.

Virtual microscope slides of exocrine glands - salivary glands (parotid, submandibular, and sublingual) and the exocrine pancreas.

In this type of gland, the lumen is straight (unbranched). This is a simple acinar gland. In this type of gland, the secretory units are rounded - and the secretory portion looks rounded.

Salivary glands appear histologically similar, being composed mainly of acinar and duct cells. Acinar cells can be either serous or mucus, whereas the ducts are largely composed of intercalated and striated cells. Human salivary glands secrete from 0.5 to 1 liter of saliva per day.

In addition to a tubular configuration, the secretory units of a simple gland can also be acinar. This example shows a gland with an unbranched duct into which the acini (alveoli) release their secretory product. This is a Meibomian gland (tarsal gland) and is located in the eyelid.

Mar 7, 2025 · Adenocarcinoma grows in the tissue of the prostate gland, but other types of cancer can also start in the prostate or spread to there. Learn about those types. ... Prostatic acinar adenocarcinoma ...

In this example of a compound acinar gland, all the secretory units are acini. Some compound glands have only tubules, while others have a combination of both acini and tubules. An acinus resembles a grapefruit cut in half, with each grapefruit segment representing an individual cell.

Acinar cells are highly polarized cells with tight junctions surrounding each acinar cell on the luminal side and thus separating the plasma membrane into apical (luminal) and basolateral (serosal) components. You might find these chapters and articles relevant to this topic. M.C. Edman, ... S.F. Hamm-Alvarez, in Encyclopedia of the Eye, 2010.

This compound acinar gland shows acini typically organized like a cluster of grapes. Each acinus represents a single grape and the intralobular ducts represent the smallest stems. The acinar cells are filled with zymogen (enzyme-containing) secretory granules.