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Cells and Histology Evelyn Higareda P.1 (CELL PARTS (cell membrane: double…
Cells and Histology Evelyn Higareda P.1
CELL PARTS
cell membrane: double layer of phosphipids lipids bi layer
cell wall: animal cells don"t have have cell walls located on outside
cytoplasm:responsible for breaking down waste and aid in metabolic activity
mitochondria:provide energy a cell needs to move
lysosomes: contain bydroyne enzymes necess any for intracellular
golgi apparatus: membrane bond structure with a single membrane
vacuoles: plays role in intracellular digestion
smooth ER: atom of hormones and other schelong products
rough Er: appears pebbled proteins synthesized on these ribosomes collect in the cell
ribosomes: packets of DNA nd proteins that play a cervical role
nucleus: holds your DNA
nucleolus: produces ribosomes, helpsin protein synthesis
chromatin:a small volume to fit into the nucleus of cells
cytosol: "soup" within which all the other cells organelles reside
centrosome: cell where molecules are produced
secretory vesicle: cell semitones hormones are packed in sartor vessels
cytoskeleton: helps maintain cell shapes cell motility
centriole: group of fused molecules
peroxisome: responsible of protecting the cell formats over production
CELLULAR TRANSPORT: movement of compounds across the outer wall or membrane of a cell
osmosis: molecules pass and art freely without any openings
simple diffusion: moving from high concentrations to low concentrations
facilitated diffusion: molecules pass in and out freely making equaled with an opening
active transport: molecules pass and out of the cell chooses going against equaliprem
CELL CYCLE
meiosis: cell division sexual reproduction human reproduction
cells that cease division
mitosis: 1 part to cell division
DNA synethesis
prophase: chromosomes align in the center of cell
anaphase: longest part of the cell cycle
cutokiseis: cell is cleaved into two daughter cells
metaphase: chromosomes separate
telophase: nucleolus reappears
EPITHELIAL: protective covering
sheets of cells
covers a surface
lines body cavities and organs
cells tightly packed
named by shape and cells
no blood vessels
contains nerves
little exracellular matrix
high regenerative capacity
CONNECTIVE: binds structure together,store energy, provides immunity
most abundant tissue in body
widely distributed
exremly varied in form and function
most different from each other
has more intercellular material than epithelial cells
fibers and matrix determine tissue
poor blood supply
MUSCULAR: body movement
replaced by scar tissue
slow to heal
contracrility
don't divide but grow larger
skeletal muscle: many cross striations
smooth muscle: long narrow fibers, but not nearly as long as skeletal
NERVOUS:conduct impulses to control and coordinate body activities
rapid communication and control of body