Since intrafusal stretch receptor
discharge frequency from Ia afferents can contribute up to 30% of the motoneuron excitation (Gandevia, 2001), SS-induced reductions in afferent excitability could adversely affect muscle force.
A stretch should be held for at least 20 seconds to fire the stretch receptor
that tells the muscle to relax.
An increase in tidal volume relieves air hunger, possibly by increasing pulmonary stretch receptor
(39.) Hunt CC, Kuffler SW: Stretch receptor
discharges during muscle contraction.
Birmingham described the stretch receptor
in the crustacean foregut that functions at different times, either as a strain gauge or a volume sensor.
McIntire, however, doesn't think the flow deforms the membrance enough to activate a stretch receptor
. Instead, he theorizes that large molecules at the cell surface stick out and unravel or undergo some other change in response to flow, and that this change may trigger a response.
Each pair of MROs has two stretch receptor
(SR) neurons, a large, high-threshold phasic neuron and a smaller, low-threshold, tonic one.
There have been no measurements yet made to determine whether either neuro-modulator is released peripherally; however, since the stretch receptor
both contains and responds to each substance, it is possible that GPR2 releases either or both to effect gain control through negative feedback.
What's more, an increase in pulmonary stretch receptor
activity leads to inhibition of cardiac vagal neurons resulting in an elevation of heart rate or sinus tachycardia.
The goal of this research is to understand the functional roles of the thoracic stretch receptor
, especially anteriorly located ones, which would be closely related to segmental movements.
During laryngoscopy with conventional Macintosh blade, its tip is placed in the vallecullae to lift the epiglottis which stimulates the stretch receptors
in the epipharynx.
In the theory, the pelvic floor muscle forces the vaginal membrane to stretch against the suspensory ligaments to stimulate the micturition stretch receptors
. Laxity in the membrane or suspensory ligaments may activate stretch receptors
, which are perceived by the cortex as urgency, frequency, and nocturia untimely.