Cell Biology and General Pathology Concepts Flashcards
1
Q
What are cell membranes mainly composed of?
A
Phospholipids and proteins.
2
Q
Can lipid-soluble substances cross membranes?
A
Yes, they can cross cell membranes because they can dissolve.
Ex: Ox, CO2, steroid hormones.
3
Q
Where does diffusion usually go/behave?
A
It goes from higher concentration to lower concentration.
4
Q
What goes into the cell with glucose?
A
Sodium.
5
Q
Difference between regeneration and fibrosis
A
Regeneration - renewal of lost tissue or part in which the lost cells are replaced by identical ones.
Fibrosis - Healing by connective tissue replacement (scar).
6
Q
Difference between grade and stage
A
Grade - how much it has changed from its parent tissue. How anaplastic it is.
Stage - the extent of spread within the patient and size of original tumor.
