ch 3 Flashcards
4 parts to organization of body
cells—-tissue—-organs—-organ systems
what is a cell and it needs a constant supply of what??
basic structural and functional component of life. it needs a constants supply of energy/water/building supplies and chemical regulators
what are the 2 components of cells
cell membrane and organelles
cells get their energy from what
carbs
lipids
fats
what does the cell (plasma) membrane do
holds cellular contents
regulates flow of substances in and out
cholesterol is part of it
protein acts as a transport vehicle
mitochondria
powerhouse of the cell
provides energyyy
the 2 acids inside cell nucleus
DNA(Deoxyribonucleic acid )- code that directs protein
RNA(Ribonucleic acid)-involved in copying the DNA code
difference between anabolic and catabolic
anabolic- synthesis(requires energy)
catabolic-breakdown ( releases energy )
hepatic portal circulation
vein that carries blood from capillaries in intestines to liver
Cardiovascular System is responsible for
Transports nutrients, waste products, gases, and hormones throughout body
•Plays role in immune responses
•Aids in body temperature regulation
4 parts to nervous system
Brain•Spinal cord•Nerves•Sensory receptors
what are the pig parts to nerve impulse transmission
sodium and potassium
what is the preferred fuel for the brain
glucose
what helps myelin sheath covering nerve fibers
lipids
protein
b12
what are neurotransmitters made from
amino acide- common nutrients found in food
