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20 Cards in this Set

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Cell membrane components
fluid phospholipid bilayer
numerous specific proteins
microvilli and cilia
surface proteins like fibronectin which play role in cell to cell interaction
cell membrane functions
selective barrier
structural base for enzymes and receptors which determine cell function
form boundaries of many organelles and separate them from the cytosol
protection from injurious agents
separate the interior of the cell from external surfaces, neighboring cells, or surrounding matrix
microvilli and cilia
plasma membrane specialization that are often specifically altered in disease
cytosol
watery gel that suspends cell's organelles and inclusions
chemical reactions occur mediated by free enzymes
highly organized microtrabecular network
mitochondria
site of fatty acid oxidation, the citric acid cycle, and oxidative phosphorylation
outer membrane, outer compartment, inner membrane, inner compartment (matrix), cristae, and mitochondrial DNA.
Damage results in diminished ATP production
nucleus
storage and transmission of genetic information
outer nuclear membrane continuous with RER
euchromatin
uncoiled chromatin active in generation of mRNA for protein synthesis
heterochromatin
coiled chromatin that is inactive in transcription
nucleolus
basophilic organelle composed of RNA, nucleolus-associated chromatin, and protein.
synthesis of rRNA, essential in proteins syntesis
prominence dependent upon cell's synthetic activity
RER
intracellular membranes studded with ribosomes
prominent in cells producing large amounts of extracellular protein
high content of acidic RNA of ribosomes
SER
tubular or vesicular form of cell membranes which lack ribosomes
contains enzymes that metabolize steroids, drugs, lipids, and glycogen
gives the cytoplasm a pale, finely vacuolated appearance
Golgi apparatus
lamellar stacks or flattened sacs of membrane, vesicles and vacuoles
synthesis of complex proteins by addition of carbohydrate molecules and production of secretory vesicles and lysosomes.
lysosomes
small membrane bound vesicles with hydrolytic enzymes for intracellular digestion
microfilaments, intermediate filaments, microtubules
composed of protein subunits
function in the cytoskeleton and cell movement
mitotic spindle, cilia, microvilli, neurons, myocytes, and phagocytic cells
intermediate filaments
10nm in diameter
maintain cell shape
can be used as markers for undifferentiated neoplasms
cytokeratins
found in epithelial cells
desmin
found in muscle cells
vimentin
found in mesenchymal cells like fibroblasts
Cellular inclusions
glycogen granules, proteinaceous and lipid debris, hemosiderin, viral particles, and calcium granules.
some are normal
others reflect cell injury
extracellular matrix
influences cell health and function including proper structure and function as well as how cells grow and differentiate
basement membranes and interstitial matrix composed of collagens, proteoglycans, and adhesive glycoproteins