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What are the four tissue types?
1. Muscular- Allows for movement by trasnferring force to the skeletal system
2. Nervous- sends signals for processing and movement
3. Epithelial- covers surfaces and cavities
4. Connective- Binds Tissues Together
What kind of specialized cells do connective tissues have?
Connective tissues have specialized cells and a ground substance which is a non-cellular material that separates cells.
What kind of fibers fo connective tissues have?
Connective tissues have protein fibers
White collagen fibers- strong but flexible
Reticular fibers- thin and used for delicate networks
Elastin- Stretchable fiber
What is a loose fibrous tissue?
It has fibroblast cells in a jelly-like matrix. It is found in lungs, arteries, and the bladder (where it allows expansion).
Has fibroblast cells in a jelly-like matrix. There is very little matrix in adipose tissue. Its main function is to store fat in the body. Found under the skin and around kidneys and heart.
Dense fibrous tissues?
Has fibroblast cells in a jelly-like matrix. This type has many collagen fibers packed together and is found in tendons and ligaments.
Matrix is formed by chondroblasts and chondrocytes. This type has only fine collagen fibers and is found in the nose, ribs, and walls of respiratory passages.
What are suffixes for cell types?
Matrix is formed by chondroblasts and chondrocytes. This type has more elastic fibers and is found in the outer ear.
Matrix is formed by chondroblasts and chondrocytes. This type has a matrix with strong collagen fibers and is found in the disks between vertabrae and the knee joints.
Gets rigidity from calcium salts deposited around protein fibers. The matrix is formed by cells called osteoblasts called osteons.
This is the shaft of long bones and is composed of structures called osteons.
This is the terminal ends of bones and is still rigid.
Composed of plasma (the fluid portion of blood), plateletes (proteins involved in blood clotting), red blood cells (erythrocytes), and white blood cells (lymphocytes).
A fluid connective tissue that is composed of a non-polar (hydrophobic) liquid and lymphocytes. The lymphatic system contains the lymphnodes; these structures often become swollen during infections.
Composed of muscle fibers that are themselves built from actin and myosin filaments. This type is attached to bones by tendons and is responsible for producing voluntary movement.
Composed of muscle fibers that are themselves built from actin and myosin filaments. In this type the cells lack striations (hence smooth) and are found in the walls of the digestive tract, blood vessels, and bladder. Smooth muscle contracts automatically and is therefore not voluntary.
Composed of muscle fibers that are themselves made from actin and myosin filaments. As the name implies, this type is found only in the heart. It is striated like skeletal muscle but contracts involuntarily like smooth muscle.
Cells of the nervous system that are composed of a cell body, axon, and dendrites. Found throughout the body but to differing degrees of density. For example, a person can feel pain in most parts of the body but the intesity of the pain depends on the number of neurons present.
Composed of cells (astrocytes and oligodendrites) that support and nourish the neurons. They also protect against bacterial infection.
Composed of tightly packed cells that are anchored to a basement membrane and serve as a protective layer. This type has only one layer of cells and is subdivided according to cell type:
Squamous Epithelium- found in lungs and blood vessels
Cuboidal Epithelium- found around glands and have microvilli to increase surface area
Cuboidal Epithelium- found in the lining of the digestive tract and also have microvilli
Pseudostratified columnar epithelium?
This type appears to have layers but in fact all of the cells are in contact with the basement membrane. This type is found in the lining of the lungs and the cells are ciliated. The cilia push mucus (a vicous fluid that traps particulate matter) up to the throat.
This type is known for its elasticity and is found in the bladder, ureters, and urethra.
This type has layers of cells and is found in the nose, mouth, esophagus, anus, and cervix. This type is also found in the skin where it is reinforced by keratin to give strength to the tissue.
What is the integumentary system?
It's the skin and its associated glands.
Epidermis- the location of cells called melanocytes, these cells produce the melanin that gives skin its color.
Dermis- composed of fibrous conective tissue and sensory receptors.
Subcutaneous layer- primarily adipose tissue and is a common site for injections.