Enzymes - exocrine?

[reising1]

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Are all enzymes considered to be part of the exocrine system? For example, the pancrease is both an endocrine organ (hormones released such as insulin) and exocrine system (enzymes released, such as trypsinogen). Or is it just considered exocrine here because those enzymes help to facilitate production of feces?

 

[ashtray81]

As far as I know, enzymes can be both endocrine or exocrine, just like hormones. Considering both are proteins (majority of hormones are peptides) they travel in blood and can be released via ducts (i.e., bile)

 

[krogers21]

Are all enzymes considered to be part of the exocrine system? For example, the pancrease is both an endocrine organ (hormones released such as insulin) and exocrine system (enzymes released, such as trypsinogen). Or is it just considered exocrine here because those enzymes help to facilitate production of feces?

Exocrine glands are defined as excretion through a duct, so when it says the pancreas is an exocrine gland, it is because enzymes like trypsinogen are excreted through the pancreatic duct into the duodenum at the sphincter of Oddi. So, enzymes are only considered to be a part of the exocrine system when they pass through ducts. The exocrine system essentially aborts substances; therefore, skin's sebaceous glands are exocrine glands.

 

[image187]

enzymes are found wherever reactions take place, which is everywhere. some are secreted through exocrine ducts (amylase), some stay In the blood (clotting factors), some are attached to membranes (cytochrome oxidases), some never leave the cell they are made in (G6PD).