HISTOLOGY Four Basic Types of Tissue 1 Epithelial

HISTOLOGY Four Basic Types of Tissue 1. Epithelial 2. Connective 3. Muscle 4. Nerve Thanks to Pam Brannock (USC Biology, Hilbish Lab) for creating this Power. Point

EPITHELIAL TISSUE v Cells are bound tightly together v Little extracellular material v Arranged in sheets v. Cover internal and external surfaces v. Often control passage of material v. Classified by shape of cells and number of layers Pg 154 -155; slides 157 -158

EPITHELIAL TISSUE CELL SHAPE v. Squamous shape v. Thin, flat cells v. Look like fried eggs v Cubodial shape vsquare shape- cross section v 6 sided polygon- surface v Columnar v. Rectangular- cross section v. Polygonal- surface view CELL NUMBER v. Simple v. Single layer v Stratified v 2+ layers v Pseudostratified v. Appear stratified- but not v. Transitional v. Change shape

EPITHELIAL TISSUE SIMPLE SQUAMOUS v. Single layer v. Squamous shape v. Lining of body cavity, lungs, blood vessels

EPITHELIAL TISSUE SIMPLE CUBOIDAL v. Single layer v. Cuboidal shaped v. Kidney tubules, glands

EPITHELIAL TISSUE SIMPLE COLUMNAR v. Single layer v. Columnar shape v. Lining of digestive tract v. Modified by presence of cilia

EPITHELIAL TISSUE STRATIFIED SQUAMOUS v. Multi layer v. Outer most layer- squamous cells v. Inner- cuboidal or columnar v. Lining of mouth, esophagus, skin

EPITHELIAL TISSUE PSEUDOSTRATIFIED COLUMNAR v. One layer v. Appears stratified v. Respiratory tract

CONNECTIVE TISSUE v Abundant extracellular material v. Matix (dominant part) v. Fiber, cells in liquid, gel, or solid matrix v Function v. Bind and/or support other tissue Pg 154, 156, 159; slides 158 -161

CONNECTIVE TISSUE PROPER v. Matrix consist of fibers v. Loose or areola v. Few fibers v. Delicate arrangement v. Fibrous v. Ex. Tendons v. Abundant, well organized fiber

CONNECTIVE TISSUE ADIPOSE TISSUE v. Loose connective v. Store large droplets of fat BLOOD v. Lymph v. Liquid matrix v. Sometimes in different category v. RBC- Red Blood Cells v. WBC- White Blood Cells

CONNECTIVE TISSUE CARTILAGE v. Chondrocytes v. Small cavities- lacunae v. Rubbery consistency (matrix) v. Ear, nose

CONNECTIVE TISSUE BONE v. Osteocytes v. Small cavities- lacunae v. Hardest CT v. Impregnated w/ calcium salts v. Spongy v. Loose rods of bones v. Ends of arms and legs v. Compact v. Shafts of long bones v. Tightly organized

MUSCLE TISSUE v Cells have ability to contract v. Function v. Locomotion v. Other body movement Pg 156 -157, 162; slides 161

MUSCLE TISSUE SKELETAL v. Voluntary movement v. Long and cylindrical v. Transverse striation v. Each fiber is multi-nuclear

MUSCLE TISSUE SMOOTH v. Involuntary movement v. Predominant v. Long, spindle shape v. Single nucleus v. Internal organs

MUSCLE TISSUE CARDIAC v. Striations v. Involuntary v. One nucleus v. Deep center v. Heart muscle

NERVE TISSUE v Cells very high ability to v. Respond to stimuli v. Transmit impulses Pg 157, 163; slides 161

NERVE TISSUE NEURON v. Cell Body(3) v. Dendrites (5) v. Axon(1)