뒤로Anatomy & Physiology: Tissue and Membrane Fundamentals
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Groups of cells similar in structure that perform common functions.
Epithelial, connective, muscle, and nervous tissues.
The study of tissues.
Covering and lining epithelium and glandular epithelium.
Protection, absorption, filtration, excretion, secretion, and sensory reception.
Having a top (apical) surface exposed to the environment or cavity and a bottom (basal) surface attached to underlying tissue.
An adhesive sheet that anchors the basal surface of epithelial cells to underlying connective tissue.
Intercellular junctions that prevent leakage between cells by sealing membranes tightly together.
Cell adhesion structures that keep cells tightly connected to prevent them from falling apart.
Channels that allow direct communication and transfer of substances between adjacent cells.
Simple epithelium has one cell layer; stratified epithelium has multiple layers.
Squamous (flat), cuboidal (cube-shaped), and columnar (column-shaped).
Allows rapid diffusion and filtration, found in lungs and kidneys.
Found in glands and small tubes, involved in secretion and absorption.
Microvilli for absorption and cilia for moving substances; may contain mucus-secreting goblet cells.
Appears stratified but all cells reach the basal lamina; involved in secretion and mucus movement, often ciliated.
In areas of high wear and tear like mouth, esophagus, and vagina; provides durability with multiple layers.
Epithelium with cells that change shape to stretch, found in bladder and urinary tract.
Connective tissue proper, cartilage, bone, and blood.
Collagen (strong, not stretchy), elastic (stretchy), and reticular (web-like, supportive).
The non-cellular component made of ground substance and fibers that supports cells and determines tissue function.
Immature connective tissue cells that secrete fibers and ground substance to build tissue.
Dense regular fibers run parallel for strength in one direction; dense irregular fibers run in multiple directions for strength in many directions.
Hyaline (most common), elastic (flexible), and fibrocartilage (toughest).
Voluntary, striated, multinucleated cells attached to bones for movement.
Involuntary, striated, single nucleus, branched cells with intercalated discs for synchronized heart contractions.
Walls of hollow organs; involuntary, non-striated, spindle-shaped cells with one nucleus.
Neurons that transmit electrical signals and supporting cells that regulate and protect neurons.
Cutaneous (skin), mucous (lines cavities open to exterior), and serous (lines closed body cavities).
Inflammatory response: white blood cells cause blood vessel dilation and clotting to stop bleeding.
Bone, areolar connective tissue, dense irregular connective tissue, and blood-forming tissue.