Flashcards in Cell Ultrastructure Deck (26):
Name 4 types of tissue?
Epithelial - Lying and covering
Connective - Support
Muscle - Movement
Nervous - control
Cilli is found where?
Respiratory tract and Fallopian tubes
Microvilli is found where?
What does the Cilli contain?
What is the function of cilli?
To facilitate movement
What do micro villi contain?
Micro filaments (they are shorter than cilli)
What is the function of micro villi?
To increase surface area for absorption. They do not move and are shorter than cilli.
How many directions can the cilli move in?
Name the 3 sides of a cell.
Apical, basal, basolateral
The apical region of the epididymis is covered in sterocilli. this is mis-leading ... why?
They are not cilli they are actually microvilli
Microvilli connect to the .............?
What is the arrangement of the micro tubules within the cilli?
9 pairs of 2 micro - tubles and 1 pair of center micro-tubles
What is different about the base of the cilli compared to the mid section and tip?
It is a modified centriol and contains 9 triplets - micro tubules.
What is the name of the uneven surface on the side of the cell?
Lateral folding - prominent in cells that need to transport fluid quickly - to increase surface area
What is the name given to the uneven surface of the base layer of the cell?
Basal folding - prominent in cells that need to transport fluid quickly - to increase surface area.
Name the 3 different types of cell junction
There are two types of Adherence junctions. What are these called?
zonula Adherence - Belt Desmosomes - (band round the top) -
Macula adherence - Desmosomes (spot like)
Where can you find the gap junction?
Epithelial tissue, cardiac and smooth muscle.
Where would you find the hemi-desmosome?
Attached to the basal lamina or the basal membrane
What is the function of Smooth ER?
To make hormones and lipids
What is the cell membrane made of?
Lipids, steroids and proteins
What is the cytosol?
Its the fluid within the cell
What is the name of the fluid that lies around the outside of the cell?
Extra cellular fluid
What is Exocytosis?
A process where materials exit the cell
What is Endocytosis?
A process where materials enter the cell