TYPES OF TISSUES IN OUR BODY

Get Started. It's Free
or sign up with your email address
TYPES OF TISSUES IN OUR BODY by Mind Map: TYPES OF TISSUES IN OUR BODY

1. EPITHELIAL TISSUES

1.1. CLASSIFICATIONS BASED ON SHAPE

1.1.1. SQUAMOUS - cells are flat and slightly irregular in shape.

1.1.2. CUBOIDAL - cells look like small cubes.

1.1.3. COLUMNAR - cells are tall and rectangular looking.

1.2. CLASSIFICATION BASED ON ARRANGEMENT

1.2.1. SIMPLE – one cell layer

1.2.2. STRATIFIED – several layers of cells

1.2.3. PSEUDOSTRATIFIED – seems to have several layers due to various positioning of cell nuclei (but it is a single layer because all cells extend from the basement membrane up to the surface)

1.2.4. TRANSITIONAL – consists of several layers of cells and is designed to stretch and return to a normal state without damage.

1.3. CLASSIFICATION BASED ON FUNCTION

1.3.1. MUCOUS MEMBRANE – To produce mucus, but it also concentrates bile in the gallbladder.

1.3.2. GLANDULAR EPITHELIUM - forms glands. Glands are actually involution of epithelial cells. Glands produce and secrete specific products.

1.3.3. ENDOTHELIUM - special name given to the epithelium that lines the circulatory system.

1.3.4. MESOTHELIUM - also known as serous tissue. The tissue that lines the great cavities of the body that have no openings to the outside.

2. CONNECTIVE TISSUE

2.1. CONNECTIVE TISSUE PROPER

2.1.1. LOOSE CONNECTIVE TISSUES

2.1.1.1. AREOLAR (LOOSE) CONNECTIVE - The tissue that SURROUNDS various organs and SUPPORTS both nerve cells and blood vessels, which TRANSPORTS nutrients to cells and wastes away from cells. Areolar tissues also temporarily STORES glucose, salts and water.

2.1.1.2. ADISPOSE TISSUE - composed of sac-like adispose cells. Stored lipid (fat) acts as a filler tissue, cushions, supports and insulates the body.

2.1.1.3. RETICULAR Tissue - consists of fine network of fibers that form the framework of liver, bone marrow and lymphoid organs such as the spleen and lymph nodes.

2.1.2. DENSE CONNECTIVE TISSUE

2.1.2.1. DENSE REGULAR - PARALLEL arrangement of fibers (it has more collagen and few elastic fibers). It can withstand TENSION when pulling force is applied in one direction.

2.1.2.2. DENSE IRREGULAR - irregular arrangement of Fibers (made primarily of Collagen fibers and few elastic fibers). It is able to withstand tension exerted in many directions; provides structural strength.

2.1.2.3. ELASTIC TISSUE - Contains a high proportion of Elastic Fibers. Allows recoil of tissue after stretching.

2.2. SPECIALIZED CONNECTIVE TISSUE

2.2.1. BLOOD

2.2.2. BONE

2.2.3. HYALINE CARTILAGE - fibers are not visible.

2.2.4. FIBROCARTILAGE - thick collagen fibers predominate.

2.2.5. ELASTIC CARTILAGE - more elastic fibers in matrix

3. MUSCLE TISSUE

3.1. SMOOTH MUSCLE - involuntary, we do not control its contraction. Controlled by the autonomic nervous system.

3.2. STRIATED OR SKELETAL MUSCLE - voluntary movements. The tissue that causes movement of our body by pulling on bones.

3.3. CARDIAC MUSCLE - striated, involuntary muscle. It makes up the walls of the heart. As it contracts, it propels blood into the circulation; involuntary control

4. NERVOUS TISSUE

4.1. 2 TYPES OF NERVE CELLS

4.1.1. NEURONS - conducting cells.

4.1.2. Neuroglia - supporting and protecting cells.

4.2. 3 GENERAL STRUCTURES

4.2.1. CELL BODY - contains the nucleus.

4.2.2. DENDRITES - root like extensions.

4.2.3. AXONS - long, thin extensions of the cell body that transmit the impulse toward the axon endings.

4.3. Controls and coordinates the activities of the body.