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

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