Pharmacology 2 Flashcards
Name the 2 types of cholinergic receptors
- Nicotinic
- Muscarinic
State the main locations for nicotinic receptors
- Smooth muscle
- Cardiac muscle and glands
- Sweat glands
- Skeletal muscle
- Blood vessels
State the main locations for muscarinic receptors
- Cells of adrenal nerves
- Neuromuscular end plates of skeletal muscles
Name the neurotransmitter that is affiliated with cholinergic receptors
Acetylcholine binds with BOTH Nicotinic and Muscarinic receptors
State the section of the ANS (autonomic nervous system) that would be affected by medications that either stimulate or inhibit cholinergic receptors?
Parasympathetic Nervous System
Describe the effect of administering an agonist medication on cholinergic receptors
Stimulate the parasympathetic response
Describe the effect of administering an antagonist medication on cholinergic receptors
Block the parasympathetic response
Name the 4 adrenergic receptors
- Alpha 1
- Alpha 2
- Beta 1
- Beta 2
State the main locations for Alpha 1 receptors
- Vascular smooth muscle (blood vessels)
- Pupils
- Heart
State the main locations for alpha 2 receptors
- Smooth muscle
- Platelets
- Presynaptic adrenergic nerve terminals
- Cholinergic nerve terminals
State the main location for Beta 1 receptors
Heart
State the main locations for Beta 2 receptors
- Bronchial smooth muscle
- Heart
- Uterus
Name the 2 hormones that will activate adrenergic receptors
Adrenaline and Noradrenaline
What section of the ANS would be affected by medications that either stimulate or inhibit adrenergic receptors?
Sympathetic nervous system
Describe the effect of administering an agonist medication on adrenergic receptors
Mimic sympathetic stimulation therefore producing the same effects of sympathetic stimulation
Describe the effect of administering an antagonist medication on adrenergic receptors
- Binds to receptors and blocks them, preventing the hormone (or neurotransmitter) from exerting an effect
What are the 2 sections of the Autonomic Nervous System?
- Sympathetic Nervous System
- Parasympathetic Nervous System
What does the Sympathetic nervous system promote?
Promotes flight or fight response
What does the parasympathetic nervous system promote?
Promotes rest & digest response
What does ANtagonist mean?
Substance that binds to and blocks a receptor thereby preventing a natural neurotransmitter or hormone form having an effect.
What does AGonist mean?
Substance that binds to and activates a receptor (mimicking the effect of a natural neurotransmitter or hormone)
What are Sympathomimetic drugs?
Mimic the effects of stimulation by the sympathetic nervous system e.g. adrenaline and noradrenaline
What are Sympatholytic drugs?
Compete at receptor sites to inhibit adrenergic sympathetic stimulation e.g. beta blockers
What do adrenergic drugs produce?
- Produce effects similar to those produced by the sympathetic nervous system
- The effect produced by the drug depends on the type of receptor activated and by the number of affected receptors in the tissue
State the specific effects Adrenaline has on Adrenoceptor agonist receptor
- Increased cardiac contractility
- Increased heart rate
- Increased blood pressure
- Bronchodilation
State the specific effects Noradrenaline has on Adrenoceptor agonist receptor
Increased blood pressure
What does the Parasympathetic Nervous system response acronym of SLUDD mean?
Salivation Lacrimation Urination Digestion Defecation
What four body responses does the Parasympathetic nervous system decrease?
- Heart rate
- Airway diameter
- Pupil diameter
- Blood pressure
What 5 body responses does the sympathetic nervous system increase?
- Heart rate
- Blood pressure
- Blood flow to cardiac muscle, skeletal muscle, liver & adipose tissue (to stimulate glycogenolysis & lipolysis)
- Blood glucose levels
- Increase secretion of adrenaline by the adrenal medulla
What does the airway diameter, GI motility and pupils do under both PARASYMPATHETIC and SYMPATHETIC nervous control
Airway diameter -
bronchodilation under sympathetic and bronchoconstriction under Parasympathetic
GI motility -
Decreases under sympathetic and increases under parasympathetic
Pupils -
Dilate under sympathetic, constrict under parasympathetic