Animal Tissues

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Fichas sobre Animal Tissues, creado por EmteeSpaces el 28/01/2015.
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Fichas por EmteeSpaces, actualizado hace más de 1 año
EmteeSpaces
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Gap Junction allows communication between cells Eg. Epithelial Tissue
Adhesive Junction for anchoring cells/cell adhesion Eg. Hemidesmosome, Adherens junction, desmosome
Tight Junction barrier function ie. prevent the passage of molecules and ions through the space between plasma membranes of adjacent cells
Epithelial tissue covers and protects surfaces, both outside and inside the body cell and matrix connections, nonvascular, capable of regeneration
Fuinctions of Epithelial tissue Protecting underlying structures Acting as a barrier Permitting the passage of substances Secreting substances (glands)
Merocine Gland mero = partial The gland releases its product and no part of the gland is lost or damaged
Apocrine Gland apo = away from secretion by membrane budding (loss of cytoplasm) portion of the cell containing secretory products is pinched off
Holocrine Gland holo = whole; complete entire cells are shed by the gland and become part of the secretion
Squamous FLAT, hexagonal, scale-like Found in skin, inner cheek
Cuboidal cube-like Found in kidney
Columnar Rectangular, pillars, columns Found in the stomach
Simple (Layer) Single layer
Stratified Multiple layers
Pseudostratified Appears to be multi-layer but the arrangement of cells are still simple (single)
Transitional (Layer) Cells of the basal layer are cuboidal, or cube-shaped, and columnar, or column-shaped, while the cells of the superficial layer vary in appearance depending on the degree of distension.
Simple Squamous Epithelium Function: reduces friction, gaseous exchange, diffusion hotspots, filtration, secretion & absorption Characteristics: flat, tightly packed, nucleus is spherical/disk shaped, single layer Location: Alveoli, blood vessels, lymphatic vessels
Stratified Squamous Epithelium Specialized in areas with high abrasion Can be keratinized or not Location: Mouth, vagina, tongue, anal canal, skin
Simple Columnar Epithelium basal nuclei all in one line, elongated cell, single layer Location: stomach lining, gallbladder, collecting ducts of kidneys, intestine, uterine tubes
Stratified Cuboidal Epithelium multiple layers of cube-like cells Location: Sweat glands, Salivary gland ducts Functions: Secretion, absorption, protection against infection
Stratified Columnar Epithelium Function: protection, secretion Location: lanryx, mammary gland ducts
Pseudostratified Columnar Epithelium Brush-like surface for cilia Function: protection & secretion
Simple Cuboidal Characteristics: Cells are cube shaped, usually as a lining for ducts thus the presence of lumen Function:Secretion and absorption Location: Kidney ducts, thyroid, other glands, etc.
Adipose Function: Energy storage, insulation, cushioning, contains lipids (fats) Location: deep in skin, buttocks, breasts
Loose Connective Connects several tissues together Location: digestive tract, blood vessels, joints
Dense Connective Connects bones/muscles Found in ligaments and tendons
Bone Structural support, immune function (marrow)
Hyaline Cartilage hyaline = having a glassy, translucent appearance provides flexible support reduces friction Commonly found in joints for support
Elastic Cartilage Great flexibility Location: epiglottis, auricle of external ear
Fibrous Cartilage Strong cartilage usually for high tension areas Location: pads within knee joint, intervertebral discs
Blood Immune function (leukocytes) Nutrient and oxygen transport (erythrocytes) Clotting (thrombocytes)
Skeletal Muscle Striated, multinucleated Voluntary Attached to bones, found in tongue
Smooth Muscle Fusiform/spindle shaped Involuntary, unstriated Multiple functions: Lines vascular tissue, lines GI tract Found in visceral organs: stomach, small intestine
Cardiac Muscle Found in the heart Striated; involuntary Intercalated disc: force muscle contraction
Nervous tissue Function: Sensory input, Controls muscles and glands, Homeostasis (balance), Mental activity Location: Brain, spinal cord, nerves
Burns
Tissue Damage and Repair
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