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

A hormone is a chemical released into the bloodstream.

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