Transcript
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
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