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43 terms

human a&p ch. 5 tissues

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cells are arranged into groups called
tissues
a rule of epithelial tissue is that it lacks
blood vesssels
epithelial tissue
covers organs,forms linings of body cavitys and lines hollow organs,has a free surface one that is exposed to the outside
the under side of epithelial tissue is anchored to connective tissue by a thin, nonliving layer called?
basement membrane
what is composed of a single layer
simple epithelial tissue
what lines the air sacs ( alveoli ) of the lungs where oxygen/ carbon dioxide are exchaged
simple squamous epithlium
what is a single layer of cube shaped cells with centrally located nuclei
simple cuboial epithlium
what protects underlying tissues, secretes digestive fluids and absorbs nutrients from digestive food
simple columnar epithlium
what increases the surface area of the cell membrane
microvilli
what appears layerd due to the varying position of their nuclei within the row of cells, they are not truly layerd
pseudostratified columnar epithelium
acumulation of the protein in which the cells harden and die
keratinization
what forms the outer layer of the skin (epidermis) and lines the throat, esophagus, vagina and anal canal
stratified squamous
what is designed to distend and return to its normal size
transitional epithelium
what is composed of cells designed to produce and secrete subsatnces into ducts or into body fluids
glandular epithelium
glands that secrete their products into ducts that open onto some internal or extrnal surface are
exocrine glands
glands that secrete their products into tissue fluids are blood are called
endocrine glands
what loose portions of their cell body bodies during secretion (mammary glands)
apocrine glands
mucus gland
which produce a thick protective substance (digestive, respiratory,reproductive system)
what resides in the tissue for an extended period of time
fixed cells
what are the most common type of fixed cell in the connective tissue and are large,star shaped cells that produce fibers by secreting protein into the extracellular matrix
fibroblast
collagenous fibers
thick threads of the potein collagen and they are important components of body parts that hold structures together
tissue containg abundant collagenous fibers is called
dense connective tissue
specialized connective tissue
includes cartilage bone and blood
areolar tissue
binds the skin to the underlying organs and fills spaces between muscles
adipose tissue (fat)
develops when cells store fat as droplets in their cytoplasm and enlarge
dense connective tissue
as tendons and ligaments, bind muscle to bone and bone to muscle
cartilage
provides support, frameworks and attachments, protects underlying tissues, and forms structural models for many developing bones
hyaline cartilage
most common type
elastic cartilage
provides the frmework for the external ear and parts of the larnx
fibrocartilage
is a shock absorber to pressure
fibrocartilage forms pads called
intervertebral disks, between individual vertebral; it also cushions the knees and the pelvic girdle
bone cells are called
osteocytes
osteocytes and layers or extracellular matrix, which are concentrically clustered around a central canal, from a cylinder shaped unit called
osteon (hacersian system)
bone cells have a cytoplasmic process that extends outward and pass through very small tubes in the extracellular matrix called
canaliculi
what is composed of formed elements suspended is a fluid extracellular matrix called blood plasma
blood
what are thin, sheet like structures composed of epithelium and underlying connective tissue covering body surfaces and lining body cavities
epithelial membranes
what lines the body cavities that lack openig to the outside and they cover viscera in these cavities
serous membranes
what is most commoly called skin
cutaneous membaranes
what is found in muscle that attaches to bones and under conscious control
skeletal muscle tissue
what are spindle shaped and contain a single nucleus
smooth muscle
what is found in the brain, spinal cord and peripheral nerves and includes neuroglial cell that are critical to the functioning of neurons
nervous tissue
the basic cells in the nervous system are called
neurons
what supports and binds athe componets of nervous tissue
neuroglial cells