Chapter 1: CELLULAR PHYSIOLOGY Flashcards
Organization, structure and function of the cell Cell reproduction Cell transport
About 60% of the body consists of?
fluid
Most fluid is inside the cells
known as milleu interior)
internal environment
1/3 found in spaces outside the cells
extracellular fluid
Where ions and nutrients needed are found
extracellular fluid
Extracellular fluid are compose of
sodium
chloride
bicarbonated ions
calcium
Intracellular fluid are compose of
Potassium
Magnesium
Phosphate ions
Sulfate
Organic ions
Cell has two major parts
Nucleus
Cytoplasm
Collective term for the substances that make up the cell
Protoplasm
Principal fluid medium of the cell. Found in most cells and is about 70- 85% concentration.
Most abundant
Water
Provide inorganic chemicals for cellular reaction.
Ions
Has two (2) types: structural (fibrillar) and functional (cell enzyme). It makes up 10-20% of cellular mass
2nd most abundant
Protiens
cytoskeleton of cellular components
Structural protiens
to form microtubules that provide “cytoskeleton” of such cellular organelles
Intracellular filaments
found in collagen and elastin fiber, blood vessels walls, tendons, ligaments, and etc.
Extracellular filaments
Carry substances inside the cell
Mainly the enzymes of the cell, often mobilein the cell fluid
Funciotnal Proteins
Fat soluble. It is used as barrier for membranes and for energy
Lipids
Used for cell nutrition and energy.
Carbohydrates
Envelops the cell and is a thin, pliable, elastic structure, composed almost entirely of proteins and lipids
Cell Membrane or Plasma Membrane
provides as barrier for movement of water and water- soluble substances
Lipid Bilayer/ Lipid Layer
provide specialized pathways or serve as enzyme that catalyze chemical reaction
Protein molecules
three (3) main types of lipids
Phospholipids → most abundant
Sphingolipids → functions for protection, signal transmission and as adhesion sites
Cholesterol → controls much of the
fluidity of the membrane
It has a hydrophilic head (phosphate end) and hydrophobic tail (fatty portion).
Lipid Bilayer
Provides a channel (pores) for water molecules and water soluble molecules
Integral Proteins
transport substances that can not penetrate the lipid bilayer
Carrier proteins
Receptors for water-soluble that can not easily penetrate the membrane.
Interaction with ligands activate either the intracellular component or proteins in the cytoplasm (second messengers).
Integral Protiens
Often attached to the integral proteins
Peripheral Proteins
Controls transport of substances
Peripheral Proteins
Loose carbohydrate coat
Cell Glycocalyx or Membrane Carbohydrates
Carbohydrate substances bound to small protein cores (proteoglycans) are loosely attached to the outer portions of the cell.
Cell Glycocalyx or Membrane Carbohydrates
Provides negative electrical charge
Allows attachment to other cells
Acts as receptor substances for binding hormones
Takes part in immune reaction
Cell Glycocalyx or Membrane Carbohydrates
It contains both minute and large-dispersed particles and organelles
Cytoplasm
the jelly-like fluid portion of the cytoplasm, contains mainly dissolved proteins, electrolytes and glucose.
Cytosol
It helps process molecules made by the cell and transports them into their specific destinations inside or outside the cell
Endoplasmic Reticulum
Watery medium inside the tubules and vesicles
Endoplasmic Matrix
It is also called as rough endoplasmic reticulum which contains ribosomes. It synthesizes protiens
Granular Endoplasmic Reticulum
Minute particle that are composed of a
combination of RNA and proteins
ribosomes
It is also called as smooth endoplasmic reticulum that does not contain ribosomes
It synthesize lipids and other processes of the cell promoted by intra-reticular enzyme.
Agranular Endoplasmic Reticulum
Composed of thin, flat, enclosed vesicles lying near one side of the nucleus.
Glogi Appratus
Synthesizes certain carbohydrates that can not be formed in the ER such as hyalunoric acid and chondroitin sulfate.
Glogi Appratus
Formed by breaking off from the golgi apparatus.
Contains hydrolases that is used to split organic compounds
Lysosomes