Mer Scott
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PHCY310 Quiz sobre L4 Sympathetic nervous system and adrenergic neurotransmission, criado por Mer Scott em 02-04-2019.

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L4 Sympathetic nervous system and adrenergic neurotransmission

Questão 1 de 10

1

Acetylcholine is the neurotransmitter at all ganglia, sympathetic or parasympathetic, and acts at nicotinic (N1) receptors.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 2 de 10

1

Most sympathetic post ganglionic nerve endings have receptors (adrenoceptors), which come in 2 types, . There are subtypes for both alpha and beta receptors.
Catecholamines act on several R types. Noradrenaline acts on . Adrenaline acts on .

Arraste e solte para completar o texto.

    adrenergic
    alpha and beta
    1 and 2
    alpha 1 and beta 1 receptors
    all adrenergic receptors

Explicação

Questão 3 de 10

1

Select all the systems on which catecholamines have inhibitory actions.

Selecione uma ou mais das seguintes:

  • Heart

  • Vasculature to the skin, membranes and kidney

  • Salivary and sweat glands

  • Gut

  • Bronchial tree

  • Vasculature of the skeletal muscle

Explicação

Questão 4 de 10

1

Selecione das listas do Menu para completar o texto.

Sympathetic affects on the heart, via ( beta 1, beta 2 ) receptor stimulation:
( increased, decreased ) heart rate and contractility
( increased, decreased ) AV node conduction
( increased, decreased ) cardiac output
Sympathetic affects on the lungs, via ( beta 2, beta 1 ) receptor stimulation:
( decreased, increased ) secretions
( increased, decreased ) airway diameter (relaxed bronchial muscle)
Sympathetic affects on the bladder:
• Relaxation of the detrusor muscle (via ( beta, alpha ) receptors)
• Contraction of the sphincter (via ( alpha 2, alpha 1 ) receptors)

Explicação

Questão 5 de 10

1

Blood vessels express alpha, beta, dopamine, histamine, and muscarinic receptors. SNS activation releases noradrenaline, adrenaline, and dopamine.
Alpha 1 activation vessels (arterioles) and blood flow to unnecessary organs, so more blood can flow to where it's needed. Beta 2 skeletal muscle beds and decreases overall vascular , increasing to muscles.

Arraste e solte para completar o texto.

    vasoconstricts
    decreases
    vasodilates
    resistance
    blood flow

Explicação

Questão 6 de 10

1

Dopamine (DA) has 3 different concentration-dependent mechanisms:
- Low [DA]: acts at receptors to dilate renal , and increase .
- Med [DA]: stimulates receptors to dilate , and decreases systemic vascular
- High [DA]: stimulates receptors to cause vessel constriction and increase .

All levels of dopamine kidney perfusion.

Arraste e solte para completar o texto.

    dopamine 1
    kidney perfusion
    artery
    beta 2
    skeletal muscle bed
    resistance.
    alpha 1
    blood pressure
    increase

Explicação

Questão 7 de 10

1

Which of these is not a side effect of drugs that activate the SNS?

Selecione uma das seguintes:

  • Decrease motility of large intestine, can cause constipation

  • Cause pupillary dilation (may cause blurred vision)

  • Cause piloerection (goose bumps)

  • Cause perspiration (sweating)

  • Cause dry mouth (may cause dysphagia)

Explicação

Questão 8 de 10

1

Sympathomimetic drugs are drugs that mimic the action of the nervous system and are adrenergic . They can be acting, and therefore selective for specific adrenergic receptors(or non-selective). They can also be acting, by increasing the availability of to stimulate adrenoceptors.

Arraste e solte para completar o texto.

    agonists
    sympathetic
    direct
    indirect
    noradrenaline/adrenaline

Explicação

Questão 9 de 10

1

Entacapone and selegine are directly acting sympathomimetic drugs used to treat Parkinson's disease.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 10 de 10

1

Adrenergic are sympatholytics, i.e. they break the effects of the SNS. Many drugs with the function of the SNS, and affect the of sympathetically innervated organs. Several of these are important for the treatment of diseases(e.g. Beta blockers such as .)

Arraste e solte para completar o texto.

    antagonists
    interfere
    physiology
    cardiovascular
    metoprolol

Explicação