Download Identify the information about your cell

Identify the information about your cell:
A. Location in the body, in the system
(diagram needed)
B. Function of system – in general
C. 1. Function of cell within the system.
2. What if the cell is not functioning?
D. Structure supporting function (Pictures or
drawings needed)
E. Interactions with other cells.
F. Molecules – common AND Unique to cell.
G. Scale, size of cells, of molecules, tissue..
H. Interesting facts
Suggested division of labor in team:
1) Finds information in the texts (one
or all)
2) Slide creator:
- Paraphrases into shortened texts
for slides.
- Identifies need for pictures and
diagrams.
3) Thinks about the flow of the show.
Writes or thinks about the script.
A brush border (or striated border or brush border membrane) is the name for the microvillicovered surface of simple cuboidal epithelium and simple columnar epithelium cells found in
certain locations of the body. Microvilli are approximately 100 nanometers in diameter and their
length varies from approximately 100 to 2,000 nanometers in length. Because individual
microvilli are so small and are tightly packed in the brush border, individual microvilli can only be
resolved using electron microscopes;[1] with a light microscope they can usually only be seen
collectively as a fuzzy fringe at the surface of the epithelium. This fuzzy appearance gave rise to
the term brush border, as early anatomists noted that this structure appeared very much like
the bristles of a paintbrush.
Brush border cells are found in two main locations:
The small intestine tract: This is where absorption takes place.[2][3][4] The brush borders of the
intestinal lining are the site of terminal carbohydrate digestions. The microvilli that constitute
the brush border have enzymes for this final part of digestion anchored into their apical plasma
membrane as integral membrane proteins. These enzymes are found near to the transporters
that will then allow absorption of the digested nutrients.
The kidney: Here the brush border is useful in distinguishing the proximal tubule (which
possesses the brush border) from the distal tubule (which does not).[5][6]
The brush border morphology increases a cell's surface area, a trait which is especially useful in
absorptive cells. Cells that absorb substances need a large surface area in contact with the
substance to be efficient.[7]
In intestinal cells, the microvilli are referred to as striated border, while in the kidneys, microvilli
are referred to as brush border.[8]
Slide Show Presentation – Criteria
For 100 points:
A. Script: accurate, flowing
B. Ending question(s): Challenging
C. Images – relevant, pleasing
D. Logistics - Title slide, under 5 min.
E. Filming - Camera is steady, looks
professional, Show students’ faces,
even shortly.
* Creative (competition)!