Dugwayâs Chemical Test Division successfully tests JCAD system on Stryker. Caged in a menacing looking metal grid with intricate sensory equipment attached to all sides the Armyâs M113 NBC RV Stryker vehicle sits on a dusty road at Dugway Proving Groundâs target S grid being readied by its crew for testing....
The following conditions are when secondary curvatures of the spine  develop:   Cervical-when the baby starts to hold its head up   Lumbar-when the baby starts to â¦ walk. 4 people found this useful.
Hyperactivity of the pectoralis minor muscle can also cause compression in this region and can be seen with conditions that cause the muscle to be used as an accessory muscle for respiration. Other conditions that can create compression of neurovascular structures in this region include postural kyphosis or trauma to the pectoralis minor or upper rib.