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Chapter 4

Tissues

TermDefinition
4 Main Tissue Types epithelial, connective, muscle, and nervous
Epithelial Tissue forms sheets that cover or line the body; Covers body and lines body cavities
Connective Tissue provides structural and functional support
Muscle Tissue contracts to produce movement
Nervous Tissue senses, conducts, and processes information
Matrix also called extracellular matrix (ECM); Internal fluid environment of the body, surrounding cells of each tissue
Collagen protein that forms twisted ropelike fibers that provide flexible strength to tissue
Elastin rubbery protein that provides elastic stretch and rebound in tissues
Simple Squamous Epithelium single layer of scalelike cells adapted for transport (e.g., absorption) {ALVEOLI}
Stratified Squamous Epithelium several layers {SKIN} of closely packed cells specializing in protection
Simple columnar epithelium tall, column-like cells arranged in a single layer; contain mucus-producing goblet cells; specialized for absorption {STOMACH}
Stratified transitional epithelium up to 10 layers of roughly cuboidal-shaped cells that distort to squamous shape when stretched; found in body areas that stretch, such as {urinary bladder}
Pseudostratified epithelium single layer of distorted columnar cells; each cell touches basement membrane
Simple cuboidal epithelium single layer of cubelike cells often specialized for secretory activity; may secrete into ducts, directly into blood, and on body surface
Ligaments a short band of tough, flexible fibrous connective tissue which connects two bones or cartilages or holds together a joint.
Bone Tissue matrix is calcified; functions as support and protection
Blood Tissue matrix is fluid; functions are transportation and protection
Skeletal Muscle Tissue attaches to bones; also called striated or voluntary; control is voluntary; striations apparent when viewed under a microscope
Cardiac Muscle Tissue also called striated involuntary; composes heart wall; ordinarily cannot control contractions {only found in the heart}
Smooth Muscle Tissue also called non striated (visceral) or involuntary; no cross striations; found in blood vessels and other tube-shaped
Cartilage Tissue matrix is consistency of gristle-like gel; chondrocyte is cell type
Function rapid communication between body structures and control of body functions
Created by: TheLifeOfMJ