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Stack #205483

tissue a collection of similar cells and noncellular substances (extracellular matrix) secreted by the cells
four types of tissue epithelial, connective, muscle nervous
histology microscopic study of tissues
apical surface free or top surface, surface which is exposed to either the external environment or to some internal body space
lateral surface side-by-side with other cells, having intercellular junctions
basal surface in contact with other cells (often other tissue types), fixed or bottom surface
avascular lacking blood vessels
Distinctive feature of epithelial tissue #1 consists almost entirely of epithelial cells
Distinctive feature of epithelial tissue #2 covers body surfaces and forms glands
Distinctive feature of epithelial tissue #3 has free and basal surface
Distinctive feature of epithelial tissue #4 avascular
Distinctive feature of epithelial tissue #5 undergoes mitosis
Single cell layer simple
More than one cell layer stratified
pseudostratified (columnar) single layer, only some cells reach the apical surface
transitional number of cell layers decreases when stretched
squamous scaly, cells flattened
cuboidal cells cube-shaped
columnar cells are taller than wide, shaped like a column
simple squamous function/location diffusion, lungs (alveoli)
simple cuboidal/columnar function/location absorption/filtration/secretion, small intestine, kidneys
all types of stratified function/location protection against abrasion, invasion, etc., outside of your skin
glands secretory organs made mostly of epithelium (form as invaginations)
exocrine gland have ducts opening to the outer surface lined with epithelium
types of exocrine glands sweat glands, mucus glands
endocrine glands duct-less, secretions (hormones) transported into the blood system
types of endocrine glands pituitary gland, pancreas, thyroid gland
Distinctive feature of connective tissue #1 abundant and diverse
Distinctive feature of connective tissue #2 consists of cells separated by extracellular matrix
Distinctive feature of connective tissue #3 specialized cells produce the extracellular matrix
Distinctive feature of connective tissue #4 performs a variety of important functions
-blast creates the matrix
-cyte fully developed an mature cell
-clast breaks down the matrix for remodeling
mesenchyme basic, fundamental connective tissue from which adult tissue is derived
collagen fiber thickest type of fiber, like a steel cable (strong but resists pull/tension)
reticular fiber thinner fiber, like a steel wire (not as strong as collagen)
elastic fiber thinner, made of elastin, properties allow it to stretch and return to normal
Yellow fat most abundant, storage for lipids, cushions and insulates
Brown fat found only in specific areas of the body, contains lots of mitochondria for metabolism
tendons connect muscles to bones
ligaments connect bones to bones
Characteristics of loose connective tissue cells and fibers widely dispersed, lots of extracellular matrix
Characteristics of dense connective tissue cells and fibers are densely packed
Characteristics of blood connective tissue liquid, extracellular matrix made mostly of water, transport medium
Functions of loose connective tissue loose packing material of most organs and tissues, attaches skin to underlying tissues
Origin of yellow fat derived from mesenchymal cells
origin of brown fat derived from muscle tissue
Functions of dense regular connective tissue resists pulling along its length
Functions of dense irregular connective tissue forms the dermis of the skin, strong in all directions
Location of elastic connective tissue ligaments in vocal cords, in walls of elastic arteries
chondrocyte mature, nondividing cartilage cell
hyaline cartilage structure glassy appearing matrix
hyaline cartilage function/location smooth surfaces for movement of joints, model for bone growth; fetal skeleton, covers end of long bones, larynx, trachea, nose
fibrocartilage structure parallel collagen fibers in matrix
fibrocartilage function/location resists compression, absorbs shock; intervertebral discs
elastic cartilage structure contains abundant elastic fibers that form a weblike mesh around lacunae
elastic cartilage function/location maintains structure and shape while permitting flexibility; external ear
Created by: Jean-O