| Cells throughout the body exhibit a
great degree of variation, both in morphology and function. There
are, however, many cellular structures which are common to almost
all cell types and they will be examined in this and the following
lab. Having begun with
epithelial cells and cell junctions, we will now turn to components
of the cytoskeleton. We will then begin looking at structures which
are segregated into distinct cellular compartments by membranes,
including the nucleus. Along with the nucleus we will consider the
cell cycle and cell division.
Here's what you need to get from this
unit.
 Learn the appearance of common
cytoplasmic organelles in light and electron microscope
preparations.- Be able to correlate the two
dimensional images of the organelles in the LM and EM with their
three dimensional structure.
- Know the functions of the parts
of these organelles and how the organelles relate functionally
to each other.
- Be able to deduce the probable
functional activity of a cell based on the degree of development
of its various cytoplasmic organelles and its nuclear
morphology.
- Learn the appearance of
chromatin, nucleoli and the nuclear envelope in LM and EM
preparations.
- Visualize the three dimensional
structure of the mitotic apparatus and understand the movements
of chromosomes during mitosis.
- Be able to identify the stages
of cell division, the parts of the mitotic nucleus and the
mitotic apparatus.
- Be able to recognize mitotic
figures in routinely stained preparations.
We'll start with the
cytoskeleton. |
