Biology Question Endocrine and Exocrine Glands?

Question

Is a difference of an Endocrine and Exocrine Gland that one produces nonhormonal chemicals and the other produces hormones? Use these definitions:

Endocrine Gland- Ductless Glands located throughout the body that secrete hormones into the bloodstream through the fluid that surrounds their cells.

Exocrine Gland- Secrete nonhormonal chemicals into ducts, which transport the chemicals to specific locations inside and outside the body

Answer 1

Endo means inside, exo means outside.



For example, the pancreas is both a endocrine and exocrine gland.



The endocrine part secretes into the blood stream. This includes insulin, glucagon, and somatostatin.



The exocine part secretes to the "outside" of the body, which is the small intestines. (The GI tract is considered one big tube that is the outside of your body. Once the food from inside there is absorbed, then it is "inside"). This includes bicarbonate, pancreatic lipase, and protein digesting enzymes.



So by using your definitions:

Endocrine: secretes into the bloodstream. Yep, exactly.

Exocrine: eh, not really inside and outside the body, but true it is into ducts.



From wikipedia:

Typical exocrine glands include sweat glands, salivary glands, mammary glands, stomach, liver, pancreas. (Example of an endocrine gland is the adrenal gland, which is found on top of the kidneys and secretes the hormone adrenaline, among others).



Anyways, they both secrete hormones, both only endocrine goes into the blood.

Answer 2

Unlike Endocrine Glands Exocrine Glands

Answer 3

The major differentiation is not by what is secreted, but by the fact that endocrine glands secrete directly into the blood, and the hormones travel in the blood plasma, but only react with coded target cells in specific locations throughout the body. Exocrine glands secrete through ducts to the specific location where the secretions will act on whatever is present and susceptible to the actions of the secreted substance.

Answer 4

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Exocrine glands These are glands that secrete their products (excluding hormones and other chemical messengers) into ducts (duct glands) which lead directly into the external environment. They are the counterparts to endocrine glands, which secrete their products (hormones) directly into the bloodstream (ductless glands) or release hormones (paracrines) that affect only target cells nearby the release site. • Examples Typical exocrine glands include sweat glands, salivary glands, mammary glands, stomach, liver, pancreas. (An example of an endocrine gland is the adrenal gland, which is found on top of the kidneys and secretes the hormone adrenaline, among others). Types There are many ways of classifying exocrine glands: Structure Exocrine glands contain a glandular portion and a duct portion, the structures of which can be used to classify the gland. • The duct portion may be branched (called compound) or unbranched (called simple). • The glandular portion may be tubular, acinar, or may be a mix of the two (called tubuloacinar). If the glandular portion branches, then the gland is called a branched gland. Method of secretion Exocrine glands are named apocrine gland, holocrine gland, or merocrine gland based on how their product is secreted. • Apocrine glands - a portion of the plasma membrane buds off the cell, containing the secretion, an example is fat droplet secretion by mammary gland. • Holocrine glands - the entire cell disintegrates to secrete its substance, an example is sebaceous glands for skin and nose. • Merocrine glands - cells secrete their substances by exocytosis an example is pancreatic acinar cells. Product secreted • Serous cells secrete proteins, often enzymes. Examples include chief cells and Paneth cells • Mucous cells secrete mucus. Examples include Brunner's glands, esophageal glands, and pyloric glands • Mixed glands secrete both protein and mucus. Examples include the salivary glands, although parotid gland is predominantly serous, the sublingual gland is predominantly mucous and the submandibular gland is both serous

Answer 5

The difference is:



Endocrine Gland- Ductless Glands located throughout the body that secrete hormones into the bloodstream through the fluid that surrounds their cells.