the sympathetic nervous system Flashcards
1
Q
function of α1 receptors?
A
- smooth muscle contraction
- vasoconstriction
- mydriasis
2
Q
function of α2 receptors?
A
- inhibition of neurotransmitter release
- GI relaxation
- inhibition of insulin release
3
Q
function of ß1 receptors?
A
- cardiac effects (positive inotropic, chronotropic)
4
Q
function of ß2 receptors?
A
- vasodilation
- bronchodilation
- uterus relaxation
5
Q
function of ß3 receptors?
A
lipolysis in fat tissue
no products available
6
Q
non-specific sympathomimetic drugs?
A
- Adrenaline (ß1 and ß2)
- Noradrenaline (ß1 and α1)
- Dopamine (effects dose dependant)
low dose (D1 receptors)
medium dose (ß1 receptors)
high dose (α1 receptors)
7
Q
ß - receptor agonists?
A
- dobutamine (mainly ß1)
- isoproterenol (ß1 and ß2)
- ß2 agonists
- clenbuterole
- salbutamole (doping)
- salmererole
8
Q
indications of ß agonists?
A
- Horse RAO
- Feline asthma
- bronchitis, bronchopneumnia
- trachea hypoplasia
- tracheal collapse
9
Q
α adrenoceptor agonists?
A
mainly α1 receptors - vasoconstriction
- napthazoline
- xylometazoline
- phenylpropanolamine
- Ephedrine
- amphetamine
10
Q
which α1 receptor agonist is used in the treatment of urinary incontinence?
A
Phenylpropanolamine (Propalin*)
urinary bladder sphincter constriction
11
Q
α2 agonists?
A
- Xylazine
- detomidine
- medetomidine
- romifidine
12
Q
Non - specific α -antagonists (sympatholytics)
A
- Phenyoxybenzamine
- phentolamine
- tolazoline
13
Q
what drug is used for urethral sphincter relaxation?
A
Phenoxybenzamine
14
Q
α 1 antagonists
A
- Prazosine
- doxasazine
15
Q
α 2 antagonists
A
- Yohimbine
- antipamezole
