Where is the type of tissue that provides insulation in mammals found?

A layer of tissue lies immediately below the dermis of vertebrate skin. It is often called as subcutaneous tissue.  It has got larger blood vessels and nerves than those found in the dermis.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]