TissuesTissues

• Tissue is a group of cells that perform a common or related function

• They are similar in structure

• Tissue is a group of cells that perform a common or related function

• They are similar in structure

Epithelia Tissue Connective Tissue Muscle Tissue Nervous Tissue

Epithelial TissueEpithelial Tissue

• Epithelia tissue is a sheet of cells that cover a body surface or cavity

• Epithelia tissue is a sheet of cells that cover a body surface or cavity

Tissues Simple Epithelia Stratified Epithelia

Simple EpitheliaSimple Epithelia

• Composed of only a single cell.

• Function in absorbtion and filtration

• Composed of only a single cell.

• Function in absorbtion and filtration

Epithelia Simple Squamous Simple Cuboidal Simple Columnar

Simple SquamousSimple Squamous

• Flat cells with sparse cytoplasm

• Found where rapid filtration is needed

• Two types-Mesothelia and Endothelia

• Flat cells with sparse cytoplasm

• Found where rapid filtration is needed

• Two types-Mesothelia and Endothelia

Simple Epithelia Simple Cuboidal Simple Columnar

Simple CuboidalSimple Cuboidal

• Simple Cuboidal cells are formed of a single layer of cells

• Form the walls of the glands and the kidney tubules

• Simple Cuboidal cells are formed of a single layer of cells

• Form the walls of the glands and the kidney tubules

Simple Epithelia Simple Squamous Simple Columnar

Simple ColumnarSimple Columnar

• Mostly associated with absorbtion and secretion

• Line the digestive tract

• Contain microvilli and goblet cells, furthering the it’s purpose

• Mostly associated with absorbtion and secretion

• Line the digestive tract

• Contain microvilli and goblet cells, furthering the it’s purposeSimple Epithelia Simple Squamous Simple Cuboidal

Pseudostratified ColumnarPseudostratified Columnar

• All of the Pseudostratified Columnar cells rest on a basement membrane, but rest at various heights

• Function in absorbtion and secretion

• All of the Pseudostratified Columnar cells rest on a basement membrane, but rest at various heights

• Function in absorbtion and secretionEpithelial Tissue

Stratified EpitheliaStratified Epithelia

• Contain two or more cells layers

• The major function of these cells is to protect

• Contain two or more cells layers

• The major function of these cells is to protect

Epithelial Tissue Stratified Squamous Stratified Cuboidal Stratified Columnar

Stratified SquamousStratified Squamous

• Composed of several cell layers

• Main purpose is protection

• Contain keratin, a protective protein

• Forms the external part of the skin

• Composed of several cell layers

• Main purpose is protection

• Contain keratin, a protective protein

• Forms the external part of the skinStratified Epithelia Stratified Cuboidal Stratified Columnar

Stratified CuboidalStratified Cuboidal

• Quite rare• Found in the

ducts of larger glands

• Quite rare• Found in the

ducts of larger glands

Stratified Epithelia Stratified Columnar Stratified Squamous

Stratified ColumnarStratified Columnar

• Found in the pharnyx, male urethra, and the lining of glandular ducts.

• Found in the pharnyx, male urethra, and the lining of glandular ducts.

Stratified Epithelia Stratified Cuboidal Stratified Squamous

Transitional EpitheliaTransitional Epithelia

• Lines the hollow urinary organs

• Basal layer is made up of columnar or cuboidal cells

• Stretch out when urine is going through the tubes

• Top cells are squamous like

• Lines the hollow urinary organs

• Basal layer is made up of columnar or cuboidal cells

• Stretch out when urine is going through the tubes

• Top cells are squamous like

Epithelial Tissue

Muscle TissueMuscle Tissue

• Highly cellular tissue

• Responsible for most types of body movement

• Possesses myofilaments

• Three categories-Skeletal, Muscular, and Smooth

• Highly cellular tissue

• Responsible for most types of body movement

• Possesses myofilaments

• Three categories-Skeletal, Muscular, and Smooth

Tissues Skeletal Muscle Cardiac Muscle Smooth Muscle

Skeletal Muscle TissueSkeletal Muscle Tissue

• Packed tightly by connective tissue sheets

• Attached to skeletal bones

• Form the flesh of the body

• Muscle cells contain muscle fibers

• Packed tightly by connective tissue sheets

• Attached to skeletal bones

• Form the flesh of the body

• Muscle cells contain muscle fibers

Muscle Tissue Smooth Muscle Cardiac Muscle

Cardiac MuscleCardiac Muscle

• Found only in the wall of the heart

• Contracts and propels blood through the blood vessels

• Uninucleate and have branching cells that fit together at intercalated discs

• Found only in the wall of the heart

• Contracts and propels blood through the blood vessels

• Uninucleate and have branching cells that fit together at intercalated discs

Smooth Muscle Skeletal Muscle Muscle Tissue

Smooth MuscleSmooth Muscle

• Has no striations• Found mainly in

the walls of hollow organs

• Main purpose is to squeeze substances through the muscles

• Has no striations• Found mainly in

the walls of hollow organs

• Main purpose is to squeeze substances through the muscles

Cardiac Muscle Skeletal Muscle Muscle Tissue

Nervous TissueNervous Tissue

• Nervous Tissue is the main component of the nervous system

• Contains neurons• Contain

supporting cells

• Nervous Tissue is the main component of the nervous system

• Contains neurons• Contain

supporting cells

Tissues

Connective TissueConnective Tissue

• Primary function is to support, protect, and bind together.

• Primary function is to support, protect, and bind together.

Tissues Bone Tissue Blood Tissue Connective Tissue Proper Cartilage

Blood TissueBlood TissueBlood does not connect anything or give support, but develops from a mesenchyme , consists of cells, and contains a matrix

Contains either red or white blood cells

Fibers are made of a soluble protein molecules that form clots

Functions include being the transport vehicle for the cardiovascular system, carrying nutrients, wastes, and respitory gases, and other substances throughout the body.

Connective Tissue

Bone TissueBone TissueBone tissues support and protect body structures

Bone matrix is similar to cartilage matrix, but is harder and more rigid

Contains osteoblasts, which produce the organic part of the matrix

Contains osteons which are formed by rings of bony matrix

Connective Tissue

Cartilage TissueCartilage TissueCartilage can withstand both tension and compression

Tough and flexible

Lacks nerve fibers, and recieves nutrients via diffusion by blood vessels

Contains chondroblasts which produce new matrix until the end of adolesence

Hyaline Cartilage Elastic Cartilage Fibrocartilage Connective Tissue

Hyaline CartilageHyaline CartilageThe most abundant cartilage in the body

Provides support with a bit of pliability

Found on the end of articular cartilage, the end of the nose, connects the ribs to the sternum, and supports the respitory passages

Most hyaline cartilage is formed in the embryonic skeleton

Cartilage Tissue Elastic Tissue Fibrocartilage

Elastic TissueElastic TissueNearly identical to hyaline cartilage, but contains more elastin fibers

Found where strength and and stretchibility are a must

Forms the ear and the epiglottis

Hyaline Cartilage Fibrocartilage Cartilage Tissue

FibrocartilageFibrocartilage

Fibrocartilage is a balance between both hyaline cartilage and elastic cartilage

Found where strong support and the bility to withstand pressure is required, like intervertebral discs and the cartilage of the knee

Hyaline Cartilage Elastic Cartilage Cartilage Tissue

Connective Tissue ProperConnective Tissue ProperContains two subclasses- Dense Connective and Loose connective

Connective Tissue Reticular Adiopose Areolar Regular Dense Irregular Dense

Recticular Connective Tissue

Recticular Connective Tissue

Resembles Areolar connective tissue

Fibers in this tissue are reticular fibers, which contain reticular cells in their network

Forms a labryinth like stroma that supports free blood cells in the lymph nodes, spleen, and bone marrow

Adiopose Areolar Regular Dense Irregular Dense

Adiopose Connective Tissue

Adiopose Connective Tissue

Similar to areolar tissue

Store much more energy than Areolar Connective tissue

Contain adiocytes and is very vascularized

Constitutes 18% of a persons body weight

Can develop almost anywhere, which some organs need to keep working

Also referred to as white adiopose tissue to distinguish it from brown adiopose tissue

Connective Tissue Proper Areolar Dense Regular Dense Irregular

Areolar Connective TissueAreolar Connective TissueFunctions include supporting and binding other tissues, holding body fluids, defending against infection, and storing nutrients

The most widely distributed connective tissue throughout the body

Adopose Reticular Dense Regular Dense Irregular Connective Proper

Regular Dense ConnectiveRegular Dense ConnectiveMainly made up of fiber, which run in the same direction.This gives a great resistance to tension

Contains fibroblasts that make the fibers

Form the tendons and aponeuroses and the fascia

Adopose Areolar Reticular Irregular Dense Connective Tissue Proper

Irregular Dense Connective Tissue

Irregular Dense Connective TissueHas the same makeup as the

regular variety, but the collagen fibers are arranged differently and the fibers are thicker

Forms where tension is exerted in more than one direction.

Found in the dermis, and the fibrous coverings of some organs

Connective Proper Adopose Areolar Reticular Dense Regular Dense Irregular