Final answer:
The specialized receptors with a concentric lamellae structure described in the question are Pacinian corpuscles, which detect transient pressure and high-frequency vibration.
Step-by-step explanation:
The specialized receptors referred to in the question with a large ovoid capsule consisting of many concentric lamellae each separated by a space containing tissue fluid are the Pacinian corpuscles.
These receptors are encapsulated, rapidly adapting mechanoreceptors that detect transient pressure and high-frequency vibration.
They are located deep in the dermis of glabrous (non-hairy) and hairy skin, bone periosteum, joint capsules, and some viscera such as the pancreas. Unlike other mechanoreceptors, they are uniquely identifiable by their large, onion-like structure.