Histology Final Flashcards
expulsion of materials out of the cell
by fusing of a vesicle membrane with the cell
membrane
Exocytosis
uptake of materials into the cell
Endocytosis
Cell drinking
Pinocytosis
Cell eating
Phagocytosis
Composed of a phospholipid bilayer and proteins
Cell membrane
act as diffusion regulators.
phospholipids
Clear liquid enclosed in the cell by the cell’s membrane.
Cytoplasm / cytosol
are metabolically active specialized structures within the cell
Organelles
Largest, densest organelle
Nucleus
Present in all cells except mature red blood cells and blood platelets.
Nucleus
Form of DNA
Chromatin
a double layered membrane
Nuclear envelope
consists of parallel membrane-bound channels.
Endoplasmic Reticulum
“highway system for the cell”
Endoplasmic Reticulum
Primary function: modification, storage,
segregation and transport of proteins that the cell manufactures.
Endoplasmic Reticulum
This organelle can be classified as rough or smooth.
Endoplasmic Reticulum
Contains ribosomes on its outer surface
Rough ER
particles composed of protein and RNA, which synthesize protein
Ribosomes
“protein factories”
Ribosomes
Contains enzymesinvolved inmanufacturing
various lipid molecules and steroid hormones
Smooth ER