Cells & Tissues Flashcards
Define physiology
Function
What is pathophysiology
Study of disease and its causes
What are the four components that make up the structure of matter
Atoms.
molecules.
organic matter
inorganic matter
What is the structure of atoms
3
Protons P+
neutrons No
electrons E*
What is the structure of molecules
H+H. =H2
What is the structure of compounds
C + 2H2 = CH4
Define a cell
Basic building block
Label a diagram of a basic cell
Section 7.1 page 1
What does the plasma membrane do
surrounds the cell. forms a semipermeable barrier around the cell.
Only small particles such as water and oxygen molecules are able to pass through into or out of the cell. Larger particles such as protein molecules are unable to pass through
What is the cytoplasm
Fluid substance contained within the plasma membrane, surrounding and supporting the other structures of the cell interior
What does mitochondria do
Produces energy with use of O2 and glucose. Gets rid of waste products like CO2 by process of diffusion
What is the nucleus
Spherical body contained within the plasma membrane. Largest structure in the cell. It contains the information genes (DNA) which determine cellular structure and function
What are the cells functions determined by
Genetic material contained within the nucleus
How are nerve impulses pass from one cell to another
Nerve cells have long extensions of the plasma membrane and cytoplasm enabling no impulses to be passed from one cell to another
Describe the cells lining the respiratory tract
They have numerous hair like projections of the plasma membrane which produces motion in the mucus covering the lining of the tract
What are ribersomes concerned with
Protein production
What are the four components that make up cell structure
Plasma membrane
Cytoplasm
Nucleus
Organelles
What are the requirements for cell to successfully function
Oxygen
Nutrition
Water
What requires the presence of oxygen
Most of the bodies chemical activities which take place within the body cells
Why the cells require food or nutrition
In order to produce energy, build and repair cells and provide raw materials for chemical synthesis