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Name this cell shape: thin, flat, scaly shape, often w/a bulge where the nucleus is, much like the shape of a fried egg. ___ cells line the esophagus and form the surface layer (epidermis) of the skin
Name this cell shape: squarish-looking in frontal tissue sections and about equal in height and width; liver cells are a good example.
Name this cell shape: distinctly taller than wide, such as the inner lining cells of the stomach and intestines
Name this cell shape: having irregular angular shape with 4, 5, or more sides
Name this cell shape: having multiple pointed processes projecting from the body of a cell, giving it a somewhat starlike shape. The cell bodies of many nerve cells are ___
Name this cell shape: round to oval, as in egg cells and white blood cells
spheroidal to ovoid
Name this cell shape: disc shaped, as in red blood cells
Name this cell shape: spindle-shaped;elongated, w/a thick middle and tapered ends, as in smooth muscle cells
Name this cell shape: long, slender, and threadlike, as in skeletal muscle cells and axons of nerve cells.
fluid between nucleus and cytoplasm.
plasma membrane is
a lipid protein membrane surrounding the cell.
what is cytosol?
Cytoplasm comprises cytosol or intracellular fluid.
2 classes of plasma membrane proteins
- 1) Integral,
- 2) Peripheral
Integral proteins placement on phospholipid bilayer is
penetrating into it or go all the way through it.
AKA: transmembrane proteins
Peripheral proteins placement on the phospholipid bilayer...
adhere to the face of the phospholipid membrane.
is to bind to chemical signals, which are usually specific to that receptor.
enzymes in the plasma membrane cary out the ___ stages of ____ & ___ digestion
final stages of starch and protein digeston
what do channel proteins do in the plasma membrane?
allows water & hydrophilic solutions to move through.
what 3 types of stimuli open channel proteins?
- 1) ligand-gated channels
- 2) voltage-gated channels
- 3) mechanically gated channels
ligand-gated channels respond to
voltage-gated channels respond to
changes in electrical potential (voltage) across plasma membrane
mechanically gated channels respond to
physical stress on a cell, such as stretch and pressure.
which type of gated channel plays an important role in the timing of nerve signals and muscle contractions?
mechanically gated channels
what type of protein are carriers?
transmembrane proteins that bind to glucose, electrolytes and other solutions to transfer them to the other side of the membrane.
what are pumps
a type of carrier that consumes ATP in the process
what are cell-identity markers
a glycoprotein acting as a cell-identity marker distinguishing the body's own cells from foreign cells
What are cell-adhesion molecules
a cell-adhesion molecule that binds one cell to another
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