amnion. the innermost fetal membrane, which forms a sac filled with amniotic fluid that surrounds the embryo and later the fetus; as it enlarges it gradually obliterates the chorionic cavity and enfolds the umbilical cord. Called also bag of waters.
cluster breathing. cluster breathing. a breathing pattern in which a closely grouped series of respirations is followed by apnea. The activity is associated with a lesion in the lower pontine region of the brainstem. See also Biot's respiration, Cheyne-Stokes respiration.
Enhancing Your Breathing with Special Techniques. 1  1. Clench your fist when you breathe. 2  2. Sigh as you exhale. 3  3. Visualize your breath.  4. Practice pursed lip 1  breathing. 5. Try to breathe slowly to prevent a panic attack.  6. Use the 7-11 breathing pattern to stop hyperventilating.