|
Sympathetic system
|
The ‘fight or flight’ system that turns on in emergencies
|
|
Parasympathetic system
|
The ‘rest and digest’ system that turns on when you eat or
relax
|
|
Adrenalin (epinephrine)
|
The hormone released from your adrenal medulla when you
are under stress
|
|
Noradrenaline (norepinephrine)
|
A compound related to adrenalin, with the same effects,
but it is released from nerves of the sympathetic system
|
|
Catecholamines
|
A name for all the neurotransmitters which are similar in
structure to adrenalin and noradrenalin.
|
|
Adrenergic receptors
|
Receptors that can accept adrenalin or noradrenalin
|
|
Vagus nerve
|
The parasympathetic nerve to the visceral organs
and heart
|
|
Sympathetic chain ganglia
|
A chain of ganglia on each side of the spinal
cord. These carry sympathetic nerve impulses and connect with one another
to cause whole-body sympathetic responses
|
|
Nicotinic receptors
|
Ach receptors that will also bind to nicotine.
Responsible for (among other
things) skeletal muscle contraction
|
|
Muscarinic receptors
|
Ach receptors that will also bind to muscarine.
Responsible for (among other
things) vasodilation and secretion of digestive enzymes
|
|
Alpha-1 receptors
|
Adrenergic receptors responsible for (among other
things) constricting blood vessels in the skin guts, and kidneys
|
|
Alphs-2 receptors
|
Adrenergic receptors responsible for stopping
the sympathetic system when enough catecholamines have been released
|
|
Beta-1 receptors
|
Adrenergic receptors responsible for (among other
things) increasing
heart rate and strength
|
|
Beta-2 receptors
|
Adrenergic receptors responsible for (among other
things) dilating the bronchioles to make breathing easier
|
|
|
|
|
|
|
|
|
|
|
|