Tissues Four MAIN Categories of Tissues 1 Connective

Tissues

Four MAIN Categories of Tissues 1. Connective 2. Epithelial 3. Nervous 4. Muscle

Epithelial Tissue �Is avascular a nerve supply �Has ______ �Arranged in Covers, lines and layers protects �_______

Classified by 1. Shape _____ of Layers 2. Number _______

Classification by Shape flat 1. Squamous =______ 2. Cuboidal = _______ square 3. Columnar =______ column (rectangle) Basement membrane

Classification by # of Layers �Simple: single �_______ layer �Stratified: two or more �_______ _layers �Pseudostratified: �‘Fake Nucleilayers” not at same level �_______ _ How many layers are present in pseudostratified cells?

Identify the types of Tissues Answers: A. Stratified Squamous, B. Simple Columnar, C. Simple Cuboidal, D. Simple Squamous, E. pseudostratified columnar

�Stores energy (fat) �Transports _______ Connective Tissue materials (blood) _______ �Binds, protects and supports Vascular �______________ Has nerves

Classification of Connective Tissue 1. Loose �Tissues loosely 2. 3. 4. 5. arranged Fat �E. x ______ Dense �More Tendons fibers andand fewer cells ligaments � E. x _______ Strong but flexible Cartilage �________ Bone Blood Liquid Connective tissue

Adipose Tissue (fat)

Classify the type of connective tissue. Dense Connective Tissue

Liquid connective

Classify the type of connective tissue Lipid Nucleus of adipocyte Loose Connective tissue

Classify the type of connective tissue Cartilage

Classify the type of connective tissue Cartilage

The Connective Tissue Matrix

Connective Tissue Matrix �Use your book and the following website to help you complete this assignment. http: //www. siumed. edu/~dking 2/intro/ct. htm

Types of Cells in Connective Tissue Fibroblasts �secrete protein to make fibers Macrophages �eat cell debris and bacteria Plasma Cells �secrete antibodies and attack foreign substances Mast Cells �produce histamine to prevent clots Adipocytes �store fat

Types of Cells in Connective Tissue Reticular Fibers �Support blood vessels Ground Substance �Supportive background material Elastic Fibers �Stretchable strong fibers Collagen �Strong flexible bundles of protein

Muscle Tissue Functions �Generate heat �_______ Body movement

Types of Muscle Tissue Skelet al bone Moves Cardia c. Heart wall Smoot h Organ movement

Nervous Tissue Found in: �Brain, spinal cord and sense organs Made up of: 1. Neurons Sense and respond �_______ to stimuli __ 2. Neuroglia

Tissue Repair �Replaceold or dead cells Done via cell division �________

Name that Tissue!! �Go to b. socrative. com �Enter room number 371586

Tissue Maps

Main Types of Tissue What it does Epitheli al Where is it found?

The Stem Cell Debate 1. How far should researchers take stem cell technologies? Just because we can do something, should we? Why or why not? 2. Do embryonic stem cells represent a human life? This is an ongoing debate that brings up the question of when life begins. Should the embryo or fetus have any rights in the matter? Who has the authority to decide?