A hormone is a chemical released into the bloodstream.
Adrenaline is one of the stress-related hormones that raise the body's energy level. What is a hormone?
Responses
An electric signal originating in the spinal cord
An electric signal originating in the spinal cord
A chemical released into the bloodstream
A chemical released into the bloodstream
A type of blood cell that fights infection
A type of blood cell that fights infection
An emotion or behavior
An emotion or behavior
1 answer