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ap cell
ch 3-4
Question | Answer |
---|---|
Diffusion | molecules from greater to lesser concentrations |
osmosis | diffusion or movement of water through membrane |
active transport | molecules from lesser to greater concentration with the use of atp (opposite of diffusion) |
facilitated diffusion | MOLECULES FROM GREATER TO LESSER CONCENTRATION WITH THE HELP OF ENZYMES |
filtration | molecules and water from higher pressure to lower pressure areas with the energy of pressure NOT ATP |
phagocytosis | ingestion of a foreign substance WBC is moving |
pinocytosis | ingestion of a foreign substance WBC is stationary |
simple squamous | alveoli (air sacs) of lungs |
stratified squamous | epidermis of the skin, multiple layers, top = squamous |
transitional - urinary bladder | empty bladder - relaxed- higher structure height full bladder - stretched - lower structure height |
cell shapes | simple squamous, stratified squamous, transitional |
cell shapes | simple cuboidal, simple columnar, ciliated |
simple cuboidal | thyroid gland & salivary glands |
simple columnar | stomach lining; microvilli in the intestines for absorption |
ciliated | usually found in TRACHEA, sweeps object such as mucous |
what is a one cell gland | goblet cell |
endocrine glands | ductless secretes hormones |
exocrine glands | ducts secrete sweat gland, saliva gland |
nerve cell are | neuron transmits electro chemical impulses |
nerve cell identification and fxn | dendrite, cell body, axon |
dendrite | carries impulse to the cell body |
cell body | contains nucleus to regulate neuron fxn (the brain center) |
axon | carries impulse away from the cell body |
synapse | gap between dendrite of one cell and the axon of another cell |
connective tissue are | blood areolar connective tissue adipose fibrous connective tissue elastice connective tissue |
connective tissue - blood | cells, plasma - fxn trans materials hemopoietic tiss: blood froming organs ( RBC - carry oxygen bonded to hemoglobin WBC - destro pathogens by phagocytosis & produce antibodies for immunity Platelets - prevent blood loss by clott process |
areolar connective tissue | loose connective tissue which produces protein fibers. cells called fibroblasts (producting dells) which produce protein fibers. located beneath the dermis and epithelial tissue |
adipose | fat, adipocytes specialized to store microscopic fat droplets for use when food intact decreases. provides cushioning for organs and tissue s/a eyes kidneys |
fibrous connective tissue | parallel collagen fibers located where the body needs flexible strength artery walls to prevent blood vessel rupture tendons to connect muscle to bone ligaments to connect bone to bone |
elastic connective tissue | made of elastin fibers & located in large artery walls for stretching. also in lungs for stretching with inhalation |
elastic connective tissue - bone | osteocytes strong hard and not flexible storage site for calcium salts, supports the body and protects organs |
elastic cartilage | chondrocytes, no capillaries for blood supply, nutrients by diffusion, provides smooth surface on joint surface |
mytosis | 1 cell with diploid number of chromosomes (46 divides into 2 identical cells eh w/ a diploid number this is needed for body growth & repair no a sex cell |
meiosis | sex cell 1 cell with a diploid number of chromosomes 46 divided twice to form 4 cells w/ the haplois 12 # of chromosomes only in egg and sperm |