Answer:
The correct answer is: Release their secretions directly into the blood.
Explanation:
Glands are organs that <u>regulate bodily functions by producing and releasing certain substances</u>. Endocrine glands are a type of gland that specifically releases its product into the bloodstream.
Endocrine glands' products are called hormones and they travel through the blood vessels in order to reach their destination (the organ where they are supposed to act),
An example of an endocrine gland is the pancreas. The pancreas produces insulin and glucagon, two different hormones that act in different organs to regulate glucose levels.
I think b surface fronts but im not 100% sure
Organic molecules can range in size from simple molecules to complex structures containing thousands of atoms! Although carbon is present in all organic compounds, other elements such as hydrogen , oxygen , nitrogen , sulfur and phosphorus are also common in these molecules.
The cytoplasm in a single-celled organism and the circulatory system in a human both transport substances throughout the organism
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hope it helped
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