Adrenogic Agonist and Adrenergic Blockers Flashcards

1
Q

Autonomic Nervous System consists of

A

Sympathetic and Parasympathetic

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2
Q

Flight or flight is which nervous system, parasympathetic or sympathetic?

A

Sympathetic

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3
Q

Is rest and digest apart of sympathetic or parasympathetic?

A

Parasympathetic

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4
Q

What neurotransmitter works with the cholinergic drugs?

A

Acetylcholine

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5
Q

Acetylcholine goes to what receptor site?

A

Muscarinic

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6
Q

Adrenergic antagonist and cholinergic are

A

Have the same rest and digest effect

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7
Q

Adrenergic agonist and anticholinergic

A

Have the same flight or fight effect

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8
Q

What system and what receptor does Acetylcholine work in?

A

Parasympathetic system and somatic (efferent) receptors

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9
Q

What happens when acetylcholine goes to musiniric receptors.

A

Rest and digest, it calms the body down

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10
Q

What happens when acetylcholine goes to the nicotine receptors?

A

It stimulates that nicotine receptors

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11
Q

Characteristics of Muscarinic receptors

A

Located in the smooth muscles and myocardium (autonomic or involuntary muscles)

Stimulates by acetylcholine

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12
Q

Characteristics of Nicotinic receptors

A

Located in the skeletal muscles ( somatic or voluntary muscles)

Stimulated by ACh

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13
Q

Is autonomic system involuntary or voluntary?

A

Involuntary

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14
Q

What are cholinergic side effects.?

A

Excessive muscarinic stimulation

General: Dizziness, poor perfusion to the brain due to low BP

Eye: Blurred vision due to miosis and loss of accommodation ( poor vision) in dim light

Lung: SOB due to bronchonstriction, increase in bronchial secretions

Cardiovascular: bradycardia, dysrythmias which lead to low be and dizziness

Urinary: urgency, frequency

Exocrine glands: hypersalvation

Excessive nicotinic stimulation

Muscle cramps, fasciculation (muscle twitching)

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15
Q

What does acetylcholine do to the brain?

A

Stimulates the brain

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16
Q

What happens when there is excessive acetylcholine in the central nervous system?

A

Excitation, seizure

17
Q

What is the reversal agent or anti cholinergic drug called?

18
Q

Reasons to not give cholinergic drugs (contraindication)

A

Pregnancy / lactation

GI obstruction (abdominal pain)

GU obstruction (ureter/ urethra stone)

19
Q

Caution reasons for cholinergic drugs

A

Seizure
Asthma
PUD (peptic ulcer disease) ( when you take cholinergic hydrochloric acid secretions increase)
Bradycardia and Low BP

20
Q

What do cholinergic drugs do?

A

Stimulate the receptor sites for acetylcholine

21
Q

What do Anticholinergic drugs do?

A

Suppresses/blocks receptor sites for acetylcholine

Inhibits action of acetylcholine

22
Q

Anticholinergic side effects

A

GI: decrease secretions , hypoactive bowel sounds

Eye: mydriasis , decrease accommodation in bright light (photophobia)

Heart: increase heart rate and BP

Lungs: bronchodilation , decrease bronchosecretions ,

GU: relax muscle , increase sphincter constriction ( urinary retention)

CNS: drowsiness, decrease tremors

Used to reverse cholinergic

23
Q

Peripheral

A

Outside the brain and spinal cord

24
Q

Autonomic (visceral)

A

Involuntary, acts on smooth muscle and organs

25
Somatic
Voluntary, innervates skeletal muscles
26
Central nervous system consists of
The brain and spinal cord
27
Adrenergic receptors Alpha 1. ( Bear )
Blood vessels, eye, bladder, prostate What does it do : peripheral vasoconstriction will increase BP Mydriasis (eye dilation ) Urinary retention
28
Adrenergic receptors Alpha 2 (sleepy chicken )
What does it do: Prevents norepinephrine release Promotes vasodilation which decreases BP Miosis
29
Adrenergic receptor Beta 1
Location: heart, blood vessels What does it do: Increased heart rate and cardiac output
30
Adrenergic receptor Beta 2
Location: Lung What does it do: Bronchodilation
31
Adrenergic receptors Dopaminergic
Location: kidney, mesentery, coronary Only works with dopamine What does it do: increases contractility of myocardium , diuresis and natriuresis, increased circulation to mesentery, coronary artery and cerebral artery
32
Selective drugs
Works on specific receptors A1, A2, B1,B2 Albuterol is a selective beta 2 agonist Opens airways, helps asthma and COPD At higher dose becomes non selective and stimulating beta 1 can cause tachycardia
33
Non selective drugs
Effects different receptors at the same time, activates alpha 1, beta 1 and 2 Increases BP and HR , opens airway Epinephrine
34
Do not give Adergernic “bear drugs” to people with
Glaucoma BPH
35
Adrenergic blockers can work in what two ways?
Directly by occupying receptors - Block effects of Adrenergic neurotransmitter Indirectly by inhibiting telecast of neurotransmitters (epi and norepinephrine) - Block alpha and beta receptor sites
36
Adrenergic effects (bear)
``` Bronchodilation Mydriasis Increase heart rate Peripheral vasoconstriction Shunting from GI, GU, Skin Increase BP Decrease secretions Decrease GI motility Increase coagulability Bladder relaxes, sphincter/ prostate closes Uterus relaxes Glycogen Lysis ```
37
Cholinergic effects (sleepy chicken)
``` Bronchoconstriction Myosis Decrease Heart rate Peripheral vasodilation Increase circulation to GI,GU,Skin Decrease BP Increase secretions Increase GI motility Normal coaguability Bladder contracts, bladder spinchter/prostate open Uterus contracts Glycerin synthesis ```
38
What will acetylcholine do the peripheral nervous system
Acetylcholine will rest and digest ( sleepy chicken) on peripheral nervous system but will stimulate the brain