TissuesBy: Taylor Plant

Epithelial Connective Muscular Nervous Credits

Epithelial Tissues

• Simple– Columnar– Squamous– Cuboidal

• Stratified– Squamous– Cuboidal– Columnar– Pseudostratified

• Transitional

Tissues

Simple Squamous

• Single layer of flattened cells with disc-shaped central nuclei. • Allows the passage of materials by diffusion and filtration in sites where

protection is not important, secrets lubricating substances in seroase.• Link:• http://en.wikipedia.org/wiki/Squamous_epithelium

Epithelial Simple Columnar Simple Cuboidal

Simple Columnar

• Single layer of tall cells with round to oval nuclei, some cells bear cilia.

• Function in absorption, secretion of mucus, enzymes ,and other substances.

• Link:• http://en.wikipedia.org/wiki/Squamous_epithelium

Epithelial Simple Squamous Simple Cuboidal

Simple Cuboidal

• Single layer of cube like cells with large, spherical central nuclei.• Function in secretion and absorption.• Located in areas such as the kidney tubes, ducts and secretory portions of

small glands.• Link:http://en.wikipedia.org/wiki/Simple_cuboidal

Epithelial Simple Columnar Simple Squamous

Pseudostratified

• Single lay of cells w/different heights, some do not reach the free surface.• Nuclei are seen at different layers. • Present in male-sperm-carrying ducts• Function in secretion, partly of mucus; propulsion of mucus by ciliary

action.• Link: • http://en.wikipedia.org/wiki/Pseudostratified_epithelium

Epithelial Stratified SquamousStratified CuboidalStratified Columnar

Stratified Squamous

• Thick membrane composed of several layers of cells; basal cells are cuboidal or columnar and metabolically active; surface cells are flattened; in the keratinized type, the surface cells are full of keratin.

• Forms the external part of the Skin Epidermis, and linings of the esophagus.

• Functions by protecting underling tissues in areas subjected to abrasion.• Link:• http://en.wikipedia.org/wiki/Stratified_squamous

Epithelial PseudostratifiedStratified CuboidalStratified Columnar

Stratified Cuboidal

• Extremely rare, found in some seat and mammary glands.• Typically 2 cell layers thick• Link:• http://en.wikipedia.org/wiki/Stratified_cuboidal_epithelium

Epithelial PseudostratifiedStratified SquamousStratified Columnar

Stratified Columnar

• Limited distribution in the body• Found in the pharynx, made urethra, and lining some glandular ducts.• Also occurs at transitional areas between 2 other types of epithelia.• Link:http://en.wikipedia.org/wiki/Stratified_columnar

Epithelial PseudostratifiedStratified CuboidalStratified Squamous

Transitional

• Sever cell layers, basal cells are cuboidal, surface cells are dome shaped.• Stretched to permit the distension of the urinary bladder.• Lines the urinary bladder, uterus, and part of the urethra• Link:• http://cellbio.utmb.edu/microanatomy/epithelia/transitional_epithelium.

htm

Epithelial

Glandular

• A gland is one or more cells that makes and secrets an aqueous fluid• Types

– Endocrine Glands– Multicellular Exocrine Glands– Unicellular Exocrine Glands

• Link:• http://en.wikipedia.org/wiki/Glandular

Tissues

Endocrine Glands

• Ducts glands that produce hormones.• Secretions include amino acids, proteins, glycoprotein, and steroids.• Link:• http://en.wikipedia.org/wiki/Endocrine_glands

GlandularMulticellular Exocrine GlandsUnicellular Exocrine Glands

Multicellular Exocrine Glands

• Classified by simple or compound duct• Link:• http://www.technion.ac.il/~mdcourse/274203/lect2.html

GlandularEndocrine GlandsUnicellular Exocrine Glands

Unicellular Exocrine Glands

• Goblet cells are shaped like a goblets. Goblet cells are sprinkled in the epithelial linings of the intestinal and respiratory tracts aid columnar cells with other functions.

• Link:• http://science.jrank.org/pages/2631/Exocrine-Glands-Structu

ral-classification.html

GlandularEndocrine GlandsMulticellular Exocrine Glands

Connective Tissue

• Found everywhere in the body and is the most abundant and widely distributed of the primary tissues.

• Types– Connective tissue proper– Cartilage– Bone tissue– Blood

Tissues

Connective Tissue Proper

• Areola Connective Tissue• Adipose Tissue• Reticular Connective Tissue• Dense Regular Connective Tissue• Dense irregular connective tissue

Areola Connective Tissue

• Functions include supporting and binding other tissues, holding body fluids, defending against infection, and storing nutrients as fat.

Connective TissueAdipose TissueReticular Connective TissueDense Regular Connective TissueDense irregular connective tissue

Adipose Tissue

• Nutrient storing ability is much greater than areolar.• Richly vascular, indicating high metabolic activity.• Link:http://en.wikipedia.org/wiki/Adipose_tissue

Connective TissueAreola Connective TissueReticular Connective TissueDense Regular Connective TissueDense irregular connective tissue

Reticular Connective Tissue

• Only fibers in its matrix are reticular fibers, which form a delicate network along which fibroblasts called reticular cells lie scatter.

• Support many free blood cells in lymph nodes, the spleen and bone marrow.

• Link:http://en.wikipedia.org/wiki/Reticular_connective_tissue

Connective TissueAdipose TissueAreola Connective TissueDense Regular Connective TissueDense irregular connective tissue

Dense Regular Connective Tissue

• One variety of the dense connective tissues, all of which have fibers as their predominant element. Contains closely packed bundles of collagen fibers running the same direction, parallel to the direction of pull.

• DRCT functions in tendons and aponeuroses.• Link:• http://en.wikipedia.org/wiki/Dense_regular_connective_tissue

Connective TissueAdipose TissueReticular Connective TissueAreola Connective TissueDense irregular connective tissue

Dense Irregular Connective Tissue

• The bundles of collagen fibers are much thicken and arranged irregularly, that is, to run in more than one plane.

• Link:http://en.wikipedia.org/wiki/Dense_irregular_connective_tissue

Connective TissueAdipose TissueReticular Connective TissueDense Regular Connective TissueAreola Connective Tissue

Cartilage

• Cartilage, which stand up to both tension and compression, has qualities intermediate between dense connective tissue and bone.

• Types– Hyaline Cartilage– Elastic Cartilage– Fibrocartilage

Tissues

Link:http://en.wikipedia.org/wiki/Cartilage

Hyaline Cartilage

• Hyaline cartilage or gristle, is the most abundant cartilage type in the body. Although it contains large numbers of collagen fibers, they are not apparent and the matrix appears amorphous and glassy blue white when views by the unaided eye,

• Hyaline cartilage provides support with some pliability. It covers the ends of long bones as particular cartilage providing springy pad that absorb compression at the joints.

• Link:• http://en.wikipedia.org/wiki/Hyaline_cartilage

CartilageElastic CartilageFibrocartilage

Elastic Cartilage

• Elastic Cartilage is nearly identical to hyaline cartilage. However there are many more elastic fibers in elastic cartilage.

• These fibers are found where exceptional stretch ability is needed.• Link: http://en.wikipedia.org/wiki/Elastic_cartilage

CartilageHyaline CartilageFibrocartilage

Fibrocartilage

• Fibrocartilage is a perfect s intermediate between hyaline cartilage and dense regular connective tissues. Its rows of chonodrocytes alternate with rows of thick collagen fibers.

• It is compressible and resists tension well, Fibrocartilage is found where strong support and the ability to withstand heavy pressure are required.

• Link:http://en.wikipedia.org/wiki/Fibrocartilage

CartilageElastic CartilageHyaline Cartilage

Bone

• Because of bones rocklike hardness, it has an exceptional ability to support and protect body structures. Bones of the skeleton also provide cavities for fat storage and synthesis of blood cells.

• Link: • http://en.wikipedia.org/wiki/Bone

Tissues

Blood• Blood is the fluid which runs within the blood vessels, and is

the most atypical connective tissue, however it does not connect things or give mechanical support. It is classified as a connective tissue due to the fact that it develops from mesenchyme and consists of blood cells.

• Link:• http://en.wikipedia.org/wiki/Blood

Tissues

Nervous Tissue

• Nervous tissue is the main component of the nervous system which include the brain, spinal cord, and nerves. All of which regulate and control the bodies functions.

• Neurons are highly specialized nerve cells that generate and conduct nerve impulses.

• Link:http://en.wikipedia.org/wiki/Nervous_tissue

Tissues

Muscle Tissue

• Muscle Tissues are highly cellular, well-vascularized tissues that are responsible for most types of body movement. Muscle cells possess myofilametns, versions of the actin and myosin filaments that bring about movement or contraction in all cell types.

• Link:http://en.wikipedia.org/wiki/Muscle_tissue• Types– Skeletal Muscle– Cardiac Muscle– Smooth Muscle

Tissues

Skeletal Muscle

• Skeletal muscle is packaged by connective tissue sheets into organs called skeletal muscles which are attached to the bones of the skeleton.

• Skeletal muscle cells, also called muscle fibers, are long cylindrical cells that contain many nuclei.

• Link: http://en.wikipedia.org/wiki/Skeletal_muscle

Muscle Tissue

Cardiac Muscle

• Found only in the wall of the heart. • Functions in pumping blood to and from the heart.• Contracts many times in ones life.• Link:• http://en.wikipedia.org/wiki/Cardiac_muscle

Muscle Tissue

Smooth Muscle

• Named because its cells have no visible striations. Individual smooth muscle cells are spindle shaped and contain one centrally located nucleus.

• Link:• http://en.wikipedia.org/wiki/Smooth_muscle

Muscle Tissue

Credits

• Wikipedia• Human Anatomy & Physiology Textbook– Seventh Edition