tissue type that covers all free body surfaces
simple columnar epithelium
A single layer of tall, thin cells. These large cells contain organelles that enable them to perform complex functions. In the intestines, it produces and secretes mucus and digestive enzymes. These often have cilia and microvilli on the surface.
simple cuboidal epithelium
A single layer of cube-like cells that carry out active transport, facilitated diffusion, or secretion. They are found in mitochondria and kidneys. They often have cilia and microvilli on the surface.
simple squamous epithelium
A single layer of thin, flat cells. It is often found where diffusion or filtration take place (alveoli in lungs, kidneys). It also covers organs in the pericardial, pleural, and peritoneal cavities.
pseudostratified columnar epithelium
Epithelial tissue that only appears to be stratified. There is only one layer of cells, but there often appears to be two or more layers. This is because some of the cells are tall and reach the free surface, while others are short and do not reach the surface. These cells line certain glands and ducts, auditory tubes, the nasal cavity, and trachea. There is cilia located on the free surface of these cells.
stratified squamous epithelium
thick membrane with several cell layers, surface cells can contain keratin. protects underlying tissues in areas that can be rubbed or injured
Stratified epithelium that can be greatly stretched. When unstretched, it can have five or more layers or cuboidal or columnar cells that are dome-shaped at the surface. It is found lining cavities that can expand (bladder).
fills internal spaces, provides structural support for other tissues, transports materials within the body, and stores energy reserves
loose connective tissue, binds organs, holds tissue fluids, found beneath muscles, beaneth epithilial tissues
loose connective tissue, protects, insulates, stores fat, found beneath skin, around kidneys, behind eyeballs, on surface of heart
reticular connective tissue
forms the internal supporting framework, supports, found in walls of liver and spleen
dense connective tissue
few cells; consists of many closely packed, thick, collagenous fibers and a fine network of elastic fibers, binds organs, tendons, liagments, deeper layers of skin
most common, tips of bones at joints, soft part of the nose, supporting rings of the trachea. Prominent in early development
much more flexible than hyaline cartilage and tolerates repeated bending better w/ more elastic fibers (cartilages of external ear and the epiglottis)
has a matrix containing strong collagen fibers. found in structures that withstand tension and pressure, such as the pads between the vertebrae in the backbone and the wedges in the knee joint.
specialized connective tissue composed of osteocytes (bone cells) forming the skeleton, supports protects provides framework
only fluid tissue in the body specialized connective tissue because of origins
specialized for contraction, which brings about movement.
Muscle found only in heart, involuntary, never tires
muscle attatched to bones and is controlled by conscious effort
a muscle that contracts without conscious control and found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart), and dont have striations.
tissue composed of neurons,found in the brain, spinal cord, and periphal nerves