Levels of organization?
cells - tissue - organ - organ system
4 major types of tissue?
1.epithelial tissue 2. connective tissue 3. muscle tissue 4. nerve tissue
cellular differenttiation
cell becomes specialized to preform specific function. zygote - embryo - fetus - baby
digestive system
mouth, esophuges, stomach, intestines, liver, pancreus, gull bladder
disorder/diseases of digestive system
chlones, ibs, colitis
circulatory system
heart - lungs-heart-body repeat
connective tissue 4 parts.
1.red blood cells 2. white blodd cells 3. platelets 4. plasma
3 types of blood cells