They are called hormones.
hormones
All hormones are blood-borne.All hormones are "chemical messengers."
Hormones are chemical messengers that are secreted directly into the blood.
Hormones are chemical messenger. The hormones are carried around the body in the blood to their target organs. They can act very quickly but often their effects are slow and long lasting. : )
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Pancreas
Hormones
I believe they are called chemical messengers because of their function and the fact it is a chemical. They travel through the blood and target cells respond to hormones often because of their structure. I have read in a science book (McDougal Littell 's Human Biology) that they are called chemical messengers because they are made at one location and function at another.
Hormones.
dinasour
All hormones are blood-borne.All hormones are "chemical messengers."
Hormones are chemical messengers that are secreted directly into the blood.
Hormones are chemical messengers that are secreted by the endocrine glands into the blood. Hormones are transported via the bloodstream to reach specific cells, called target cells, in other tissues. They produce a specific effect on the activity of cells that are remotely located from their point of origin.
Yes, all hormones are released into the blood stream and then circulate to all tissues; only those target tissues that are designed to react to specific hormones will react to the presence of the hormone. Hormones are chemical messengers that are released into the blood stream, designed to cause changes in only certain tissues.
Hormones are chemical messenger. The hormones are carried around the body in the blood to their target organs. They can act very quickly but often their effects are slow and long lasting. : )
on a good day, THC
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Hormones are chemcial messengers released into the blood stream to be carried through out the body to target cells.