Tissue Layer -

: Forms coverings and linings. It is classified by cell shape (squamous, cuboidal, columnar) and number of layers— simple (single layer) or stratified (multiple layers).

Several major organ systems are characterized by specific tissue layer arrangements: The skin consists of three primary layers:

: Specialized for communication via electrical signals. 2. Specialized Organ Layers

: A tough connective tissue layer containing blood vessels, nerves, and glands.

: Mainly composed of adipose (fat) and loose connective tissue that anchors skin to underlying structures. Anatomy & Physiology Tissue Study Guide for Exam Success

: Contracts to provide movement. Skeletal muscles are organized into layers of connective tissue: epimysium (outer), perimysium (middle), and endomysium (inner).

: The outermost epithelial layer, itself made of up to five sub-layers (from superficial to deep: stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale ).