How can we help?

You can also find more resources in our Help Center.

3 terms

Module 15. General Science

STUDY
PLAY
Gland
A group of cells that prepare and release a chemical for use by the body.
Hormone
A chemical messenger released in the bloodstream that sends signals to distant cells, causing them them to change their behavior in specific ways.
Vaccine
A weakened or inactive version of a pathogen that stimulates the body's production of antibodies which can destroy the pathogen.