|
Title: What reflex is associated with the sensory stimulation of the pulmonary stretch receptors that ... Post by: juicymae92 on Feb 25, 2018 What reflex is associated with the sensory stimulation of the pulmonary stretch receptors that stimulate a deeper breath upon inspiration?
a. Carotid b. Head's paradoxical c. Hering-Breuer d. J receptor Q. 2 What receptors are associated with causing coughing, sneezing, and tachypnea when stimulated? a. Irritant receptors b. J receptors c. Muscle spindles d. Peripheral proprioceptors Q. 3 What stimulates the Hering-Breuer inflation reflex? a. The DRG when it is time to end inspira-tory efforts. b. The stretch of receptors at high lung vol-umes. c. The VRG when it is time for inspiration. d. Very low lung volumes stimulate inspira-tion. Q. 4 To which anatomic structures do the ventral respiratory centers send motor signals during inspira-tion? 1. Diaphragm 2. Larynx 3. Pharynx 4. Sternocleidomastoids a. 1, 2, and 3 only b. 2 and 4 only c. 1 only d. 1, 2, and 4 Q. 5 Which of the following control the inhibitory neurons that switch off the inspiratory ramp signal? 1. Apneustic center 2. Pneumotaxic center 3. Pulmonary stretch receptors a. 1, 2, and 3 b. 1 and 2 only c. 3 only d. 2 and 3 only Title: What reflex is associated with the sensory stimulation of the pulmonary stretch receptors that ... Post by: belegal on Feb 25, 2018 If the Hering-Breuer reflex is blocked by cooling the vagus nerve, lung hyperinflation causes a further increase in inspiratory effort, the opposite of the Hering-Breuer reflex. The receptors for this reflex are called rapidly adapting receptors, because they stop firing promptly after a volume change occurs. Head's reflex may help maintain large tidal volumes during exercise and may be involved in periodic deep sighs during quiet breathing. Rapidly adapting irritant receptors in the epithelium of the larger conducting airways have vagal sensory nerve fibers. Their stimulation, whether by inhaled irritants or by mechanical factors, causes reflex bronchoconstriction, coughing, sneezing, tachypnea, and narrowing of the glottis. In adults, the Hering-Breuer reflex is activated only at large tidal volumes (800 to 1000 ml or more) and, apparently, it is not an important control mechanism in quiet breathing. Some inspiratory VRG neurons send motor impulses through the vagus nerve to the laryngeal and pharyngeal muscles, abducting the vocal cords and increasing the diameter of the glottis. Other VRG inspiratory neurons transmit impulses to the diaphragm and external intercostal mus-cles. The inhibitory neurons that switch off the inspiratory ramp signal are controlled by the pneumo-taxic center and pulmonary stretch receptors. Title: What reflex is associated with the sensory stimulation of the pulmonary stretch receptors that ... Post by: juicymae92 on Feb 25, 2018 Cheers!!
Title: What reflex is associated with the sensory stimulation of the pulmonary stretch receptors that ... Post by: belegal on Feb 25, 2018 Cheers
|