Q 33 Which statement is correct ?
a)Aβ fibres are thickly myelinated and normally transmit nociceptive stimuli
b)A∂ fibres are unmyelinated and slower conducting than Aβ transmission,
c)A∂ fibres can alter the rate of firing depending on the intensity of stimuli and terminate in laminae l, lV and V
d)C fibres are non-myelinated and rapid conducting
Q 34 Managing chronic pain is more complex in older adults mainly because ?
a)they are reluctant to participate in management strategies
b)the impact is the same as their younger counterparts with the additional problem of social isolation
c)many approaches to management are inappropriate for this group
d ) all of the above
Q 35 The purpose of conventional TENS is to ?
a)stimulate large diameter, low threshold afferents (A-beta) and small diameter, high threshold afferents (A-delta)
b)stimulate large diameter, low threshold afferents (A-beta) without simultaneously stimulating small diameter, high threshold afferents (A-delta)
c)generate muscle twitches in order to activate small diameter muscle afferents
d)stimulate small diameter, higher threshold afferents (A-delta) without simultaneously stimulating large diameter, low threshold afferents (A-beta)
Q 36 The mechanism of action of conventional TENS is predominantly by ?
a)activating structures on the descending pain inhibitory pathways
b)resetting central sensitization and re-organising aberrant neuronal pathways
c)blocking impulses travelling in peripheral nociceptive afferents
d)inhibiting second order central nociceptor cell activity in somatic receptive fields