FAKENG BIO PLANT ANIMAL TISSUE Flashcards
What causes tissues to form?
Cell differentation
A group of similar cells that perform a common function
Tissue
The study of tissues treated with biological stains
Histology
Forms during the development process of eukaryotic cells which eventually give rise to the various parts of the animal
germinal layers
outermost layer of the skin and nervous tissues
ectoderm
most of tissues and organs
mesoderm
lining of the digestive tract
endoderm
four types of animal tissues
epithelial (cover), connective (connect), muscular (contract), nervous (conduct)
covers body organs, lines hollow organs, and forms glands to interact w/ internal and external environments
epithelial tissue
protects and supports the body and its organs and bind, store energy, and provide immunity
connective tissues
for contraction ang generation of force and heat
muscle tissue
detects changes in a variety of conditions inside and outside the body and responds by sending electric signals/nerve impulses
nerve tissue
arranged in continuous sheets in a basal membrane, own nerve supply and avascular, and form coverings and linings in the body
epithelial tissue
epithelial tissue three major function
selective barrier, secretory surface, protective surface
two types of epithelial tissue
covering and lining epithelium and glandular epithelium
forms the outer covering of skin and other internal organs
covering and lining epithelium
makes up the secreting portion of glands
glandular epithelium
three classifications of arrangement of cells in layers in epithelial tissues
simple, pseudostratified, stratified
a single layer of cells for osmosis, diffusion, filtration, secretion, and absorption
simple epithelium
secretion vs absorption
production and release of substance while the other is intake of substance
appear to have multiple layers and have goblet cells in apical surfaces
pseudostratified epithelium
protect underlying tissues in wear and tear areas
stratified epithelium
four classifications of cell shapes in epithelial tissues
squamous, cuboidal, columnar, transitional
allows for rapid passage of substances (diffusion and filtration)
squamous cells
shaped like cubes or hexagons (microvilli)
cuboidal cells
like columns and protect underlying tissues
columnar cells
change shapes
transitional cells
three types of simple epithelium
simple squamous epi, simple cuboidal epi, simple columnar epi
found in alveoli or lining of capilliaries
simple squamous epithelium
found in glands, ducts, ovary surface, or kidney
simple cuboidal epithelium
found in digestive tract, uterus, fallopian tube
simple columnar epithelium
four types of stratified epithelium
stratified squamous epi, stratified cuboidal epi, stratified columnar epi, stratified transitional epi
has multiple layers, functions for protection and barrier and reduction of water loss, found in keratinized skin and non-keratinized mouth, throat, and larynx
stratified squamous epithelium
functions for secretion, absorption, and infection protection and is located in sweat glands and salivary ducts
stratified cuboidal epithelium
functions for secretion and protection, and is found in portion of male urethra and mammary glands
stratified columnar epithelium
accommodates fluctuation in the volume of fluid in organs and protection against the caustic effect of urine found in the urinary bladder lining
stratified transitional epithelium
consists of two basic elements: extracellular matrix and cells
connective tissues
the extracellular matrix contains
protein fibers (collagen, reticular, elastic) and ground substance (proteoglycans - attract water to add strength and tissue elasticity)
seven functions of connective tissues
for enclosing and separating, connecting tissues to one another (ligaments and tendons), supporting and moving (bones and cartilages), cushioning and insulating (adipose tissues), storing of energy and calcium, transporting nutrients (blood), and protecting the body (blood and bones)
are germ cells/cells that form the matrix or young cells which can undergo mitosis
-blast