Because they are chemicals that convey a message to another part of they body to secrete this, contract that, breakdown this substance, etc.
They carry "messages" that tell other parts or cells what to do.
Hormones. Fool.
They are called hormones.
All hormones are blood-borne.All hormones are "chemical messengers."
The chemical messenger is a hormone which are produced by endocrine glands
Hormones are chemical messengers that are secreted directly into the blood.
Hormones
Hormones. Fool.
Hormones
They are called hormones.
All hormones are blood-borne.All hormones are "chemical messengers."
"hormones"
Yes, endocrine hormones act as chemical messengers. The circulatory system carries them to target tissues, where they carry messages to regulate body processes.
Hormones.
The chemical messenger is a hormone which are produced by endocrine glands
Hormones are chemical messengers that travel throughout the body and control the functions of the body. Small amounts of hormones can trigger large responses in the body.
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 are chemical messengers that are secreted directly into the blood.