Receptors Flashcards
How does the body recognise signals from chemicals such as Adrenalin?
Through interactions with Receptor
What are Receptors?
Receptors are structures on surface of cell membranes or within the cells themselves.
What is Receptor specicifity?
The ability to respond to the message it will bind to whilst ignoring similar messages
What is an Agonist?
An agonist is a drug that bonds to a receptor and produces a response.
E.G Salbutamol - B2 receptor
or Morphine activates Opiod rector
What is an Antagonist?
An Antagonist is a drug that blocks the the agonist or naturally occurring chemical messenger.
E.G Atenalol is B1 antagonist in that, because B1 receptors raise heart rate by taking Atenolol it will block this action, slowing heart rate and lowing blood pressure.
name a beta 2 agonist used to dilate the airway?
Salbutamol
A Greek letter used to designate a type of catecholamine receptor?
Beta
Name given to a drug that interacts with a receptor and activates it?
Agonist
Which organ are Beta 1 receptors found?
The heart
Which drug nteracts with a receptor and blocks the action of naturally occuring chemicals messengers?
Antagonist
Which condition of the lung is treated by beta 2 agonists?
Asthma
Name a beta 1 antagonist used to treat elevated blood pressure?
Atenalol
Name the type of muscle in which beta 2 receptors are found?
Smooth
what is the name given to a catecholamine receptor?
Adrenoceptor
What is the structure within the cell or located on the cell membrane with which a specific chemical messenger interacts?
Receptor
