20,345
edits
Changes
Created page with "==Key Stage 4== ===Meaning=== A hormone is a chemical messenger used to send signals around the body to target organs via the blood stream. ===Ab..."
==Key Stage 4==
===Meaning===
A [[hormone]] is a [[chemical]] messenger used to send signals around the body to [[Target Organ|target organs]] via the [[blood]] stream.
===About Hormones===
: [[Hormone]]s are used in the coordination of the body.
: [[Hormone]]s are [[secrete]]d by [[Endocrine Gland|endocrine glands]].
: Different [[hormone]]s affect the behaviour of different [[Target Organ|target organs]].
: [[Hormone]]s travel around the body through the [[blood]].
: [[Hormone]]s can last a long time in the [[blood]] before being removed so the behaviour of a [[Target Organ|target organ]] may be changed for some time.
===Hormones compared to Electrical Impulses===
: [[Hormone]]s travel around the body in the [[blood]] stream while [[Impulse (Biology)|electrical impulses]] travel via the [[nerve]]s.
: [[Hormone]]s take longer to travel around the body than [[Impulse (Biology)|electrical impulses]].
: The effect of [[hormone]]s can be persistent while the [[Impulse (Biology)|elecrtrical impulses]] are instantaneous.
===Meaning===
A [[hormone]] is a [[chemical]] messenger used to send signals around the body to [[Target Organ|target organs]] via the [[blood]] stream.
===About Hormones===
: [[Hormone]]s are used in the coordination of the body.
: [[Hormone]]s are [[secrete]]d by [[Endocrine Gland|endocrine glands]].
: Different [[hormone]]s affect the behaviour of different [[Target Organ|target organs]].
: [[Hormone]]s travel around the body through the [[blood]].
: [[Hormone]]s can last a long time in the [[blood]] before being removed so the behaviour of a [[Target Organ|target organ]] may be changed for some time.
===Hormones compared to Electrical Impulses===
: [[Hormone]]s travel around the body in the [[blood]] stream while [[Impulse (Biology)|electrical impulses]] travel via the [[nerve]]s.
: [[Hormone]]s take longer to travel around the body than [[Impulse (Biology)|electrical impulses]].
: The effect of [[hormone]]s can be persistent while the [[Impulse (Biology)|elecrtrical impulses]] are instantaneous.