CH3 Cells and Tissues … Power Point Part B

Assignment: Prior to class, fill in the information for the items that have a * in your own words. Be prepared to turn your answers in if requested.

Hierarchy of Information ATOMS  ELEMENTS  MOLECULES  BIOCHEMICALS  CELLS  TISSUES  ORGANS  ORGAN SYSTEMS  ORGANISM

VI. Body Tissues– 4 types A. Epithelial *Tissues = 1. Locations Coverings/Linings Boundaries Skin & Glands 2. *Characteristics *Cell Density: Surfaces: Apical & Basal Basement Membrane *Avascular: *Regeneration:

a) Simple Squamous Epithelium Forms membranes Function *Examples: 3. Classification a. *Cell Layers *Simple: *Stratified: b. Cell Shapes *Squamous *Cuboidal *Columnar 4. Simple Epithelia a) Simple Squamous Epithelium Forms membranes Function *Examples: Figure 3.17a

b) Simple Cuboidal Epithelium Functions: *Examples: Simple Epithelia … b) Simple Cuboidal Epithelium Functions: *Examples: c) Simple Columnar Epithelium Goblet Cells *Examples

d) Pseudostratified Columnar Epithelium *Layers: ______________ why? Simple Epithelia … d) Pseudostratified Columnar Epithelium *Layers: ______________ why? *w/ Cilia: name? Goblet Cells make mucus Function: cilia & mucus do what *Examples

5. Stratified Epithelia a) Stratified squamous Cell Shapes: *Function: *Examples 6. Glandular Epithelium a) *Gland = b) Types Exocrine Endocrine

VI. Body Tissues … B. Connective Tissue 1. Characteristics a. Cell Density b. *Blood Supply c. *Locations & Abundance: d. *Functions e. Extracellular Matrix *define: iii) Protein Fibers Collagen (white) fibers Elastic (yellow) fibers

2. TYPES a. Bone (osseous tissue) i) Composed of Bone cells - lacunae Hard matrix Minerals: Fibers: ii) *Function:

b. Cartilage i) *compared to Bone, matrix is? ii) Cells in lacuna iii) *Locations/Examples iv) *Types: list c. Dense Connective Tissue (Fibrous) i) *Matrix: primarily what? ii) Fibroblasts:

d. Loose Connective Tissue - * compared to Dense C.T. i) Areolar Description: Functions Location Fibers ii) Adipose *Mostly what? *Functions *Locations/Examples

e. Blood (vascular tissue) *Matrix: liquid, called what? Fibers: *Functions:

C. Muscle Tissue Cells shape: Functions: Types 1. Skeletal muscle *Organs: in what organ? *control: controlled consciously? *Function: Striated

2. Cardiac muscle *Conscious control: ? *Location: *Function: Intercalated Discs: *Striated: is it? 3. Smooth muscle *Striations: is it? *Cell Shape: *Locations: Function: Conscious control:

D. Nervous Tissue 1. Neurons a. *Function: b. Functional Characteristics Irritability Conductivity c. Cell Structure Cell Body: *Processes: 2. *Supporting Cells functions 3. *Make up what organs

VII. Events in Tissue Repair Two Methods: Regeneration and Fibrosis Regeneration = STEPS 1. Inflammation Capillaries permeable and clotting proteins leak out Blood clot forms trapping Bacteria Scab forms 2. Granulation Tissue Forms = pinkish immature connective tissue New capillaries grow in 3. Surface Epithelium Regenerates Regeneration of surface epithelium Scab detaches

B. Fibrosis 4. There May Be Some Scar Tissue Beneath 5. Tissues: epithelial, connective except cartilage B. Fibrosis = 1. Depends on: 2. Scar Tissue Repair by dense connective tissue 3. Tissues With No or Poor Regeneration Cardiac muscle: none Nervous: some mitosis Skeletal muscle: some mitosis

VIII. Health Concerns– Cancer (crab) - How Common: approx VIII. Health Concerns– Cancer (crab) - How Common: approx. ½ population develops; 1/5 die A. Carcinogens & Mutations Oncogenes & Tumor Suppressor Genes B. Increased Cell Division– not controlled C. Tumor (Neoplasm) Develops Benign OR Malignant D. Malignancy Develops Metastisis: E. Common Cancers: Skin, Breast, Colon, Lung, Prostate Gland (Stomach, Lymphoid) END OF PPT