Juxtaglomerular cells secrete renin in response to a drop in pressure detected by stretch receptors in the vascular walls, or when stimulated by macula densa cells.
22.
Chemoreceptor activity, however, also affects cardiovascular function either directly ( by interacting with medullary vasomotor centers ) or indirectly ( via altered pulmonary stretch receptor activity ).
23.
Action potentials carried by sensory neurons from stretch receptors in the urinary bladder wall travel to the sacral segments of the spinal cord through the pelvic nerves.
24.
Alveolar ventilation is under the control of the central respiratory centers, which are located in the pons and the stretch receptors and impulses from the cerebral cortex.
25.
Baroreceptors are stretch receptors located in the aortic sinus, carotid bodies, the venae cavae, and other locations, including pulmonary vessels and the right side of the heart itself.
26.
Stretch receptors are also found around the carotid artery, where they monitor blood pressure and stimulate the release of antidiuretic hormone ( ADH ) from the posterior pituitary gland.
27.
Similarly, baroreceptors are stretch receptors located in the aortic sinus, carotid bodies, the venae cavae, and other locations, including pulmonary vessels and the right side of the heart itself.
28.
Arterial baroreceptors inform reflexes about arterial blood pressure but other stretch receptors in the large veins and right atrium convey information about the low pressure parts of the circulatory system.
29.
At this point, stretch receptors in the mosquito's hugely bloated abdomen, sensing imminent blowout, initiate an urgent message to the brain, saying in effect, " Whoa there, skeeter _ pull out !"
30.
The first of the two main groups of stretch receptors wrapping the intrafusal fibers are the Ia fiber, which are the largest and fastest fibers, and they fire when the muscle is stretching.
