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Tissues
| Term | Definition |
|---|---|
| epithelial tissue | closely spaced cells that cover the skin function: protection, absorption, filtration, secretion |
| simple squamous | one layered thin cell function: diffusion and filtration location: blood vessels |
| simple cuboidal | one layered cube shaped cells function: secretion and absorption location: kidney tubules |
| simple columnar | one layered tall shaped cell function: secretion or mucus and enzymes location: digestive tract |
| keratinized stratified squamous | keratin filled dead surface cells function: protection from abrasion location: epidermis |
| non keratinized stratified squamous | no keratin alive surface cells function: protection in moist areas location: mouth, esophagus |
| pseudo stratified columnar | appears layered but all cells touch base, ciliated function: secretes mucus and moves it location: trachea, upper respiratory tract |
| transitional | cells change shape when stretched function: allows stretching location: urinary bladder |
| connective tissue | cells packed loosely surrounded by extracellular matrix |
| loose connective tissue | more ground substance less fibers |
| areolar lc tissue | function: wraps cushions and holds tissues together location: around organs |
| reticular lc tissue | function: forms supportive framework location: lymph nodes, bone marrow |
| adipose lc tissue | function: insulation, energy/fat storage location: under skin |
| dense connective tissue | more fibers less ground substance |
| dense regular | same direction fibers function: strong attachment location: tendons and ligaments |
| dense irregular | fibers in many directions function: strength in multiple directions location: dermis of skin |
| elastic dc tissue | function: stretch and recoil location: lungs, large arteries |
| supportive connective tissues | cartilage |
| hyaline cartilage | function: support and cushioning location: nose, trachea, ends of bones |
| fibrocartilage | function: shock absorption location: invertebral discs |
| elastic cartilage | function: maintains shape with flexibility location: ear |
| compact bone | looks like: tree rings function: support and protection location: outer portion of bone |
| spongy bone | looks like: spread out spaces function: houses marrow location: ends of long bones, inside |
| erythrocytes | looks like: small round no nucleus function: transport oxygen and co2 location: blood |
| leukocytes | looks like: small with nucleus function: fight infection location: blood and tissues |
| platelets | looks like: small cell fragments functions: blood clotting location: blood |
| muscle tissue | produces movement |
| skeletal muscle | looks like: long striated multinucleated function: voluntary movement location: attached to bones |
| cardiac muscle | looks like: striated branching cells, one nucleus function: pumps blood location: heart |
| smooth muscle | looks like: non- striated single nucleus function: move substances through organs location: digestive tract, vessels, uterus |
| nervous tissue | communication made of neurons and glial cells |
| neuron | looks like: circle with branches coming out function: transmit electrical signals location: brain, spinal chord, nerves |
| dendrites | looks like: branches coming off cell body function: receive signals location: neuron |
| cell body | looks like: main central part of neuron function: integrates incoming signals location: neuron |
| axon hillock | looks like: beginning of axon function: initiates action location: between cell body and axon |
| axon | looks like: long branch off cell body function: sends impulses away location: neuron |
| glial cells | looks like: other circles and branches around the neuron function: protect and insulate neurons location: around neurons |