Body Tissue Concept Map

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Body Tissues

Epithelial

Simple

Secretes and reabsorbs water and small molecules and lines kidney tubules and glands, looks like cubes

Exchanges gases and found in the lungs, flat like a pancake

Absorbs nutrients, produces mucus and lines most digestive organs, looks like columns

Stratified

Cuboidal

Secretes water and ions and lines ducts of sweat glands, looks like cubes

Squamous

Protects against abrasion and is found in outer layer of skin, mouth, vagina, flat like a pancake

Columnar

Secretes mucus and lines the epididymus, mammary glands, larynx, looks like columns

Nervous

The nervous system consists primarly of cells that are generating and transmitting electrical impulses througout the body. It sends and receives messages throughout the body. Nervous tissue contains a cell called a glial cell which does not transmit electrical impulses. Its function is to react to stimuli and reactive impulses to various numbers of neutrons. It is found in the brain and spinal cord.

Muscle

Cardiac

Cardiac muscle tissue is only found in the heart. Individual cells are much shorter than skeletal muscle fibers, they only have one nucleus. Arranged parallel to each other. Cells are short and blunt-ended with gap junctions between ends of adjoining cells. It has involuntary movement. It is branched and blue.

Skeletal

Skeletal muscle tissue connects to tendons, which attach to bones. It connects to tendons, which attach to bones. Individual fibers are thin cylinders too small to be seen with the naked eye. Arranged parallel to each other. Its function is to move the skeleton and contract. It has voluntary movement. It is everywhere connected to every bone in the body.

Smooth

Smooth muscle tissues surrounds hollow organs and and tubes, including blood vessels, digestive tract, uterus, and bladder. The slim cells are much smaller than skeletal muscle cells. Only have one nucleus, like cardiac muscle. Aligned roughly parallel to each other. Cells are tapered at both ends with gap junctions between adjacent cells. Its function is to digest and contract internal organs. It has involuntary movement.

Connective

Specialized

Adipose

It stores fat in the form of energy. It is found in everything including beneath the skin, around joints, padding the kidneys and other internal organs.

Cartilage

It is rigid connective tissue that provides a supportive framework. It lacks a vascular system so it heals slowly. It is found in the ends of bones and in the ear.

Bone

It's the most rigid connective tissue, with deposits of mineral salts and collagen within the matrix. Supports body and forms muscle attachments and the site for blood cell formation. It is found everywhere in your body.

Blood

It is composed of cells and suspended in a liquid matrix called plasma. Produced in red marrow. Transports substances throughout the body. It is found everywhere in your body.

Fibrous

Loose Connective Tissue

It forms delicate, thin membranes throughout the body that bind body parts together such as skin and underlying organs. It is found throughout the body.

Dense

It consists of densely packed collagenous fibers and is very strong but lacks a good blood supply. It is part of tendons, ligaments, and aponeuroses (very flat tendon).

Elastic

It surrounds internal organs that can expand and contract internal organs. It is found in the stomach, lungs, intestines and bladder.

Reticular

It allows you to filter blood cells. It surrounds lymph nodes and the spleen.