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chemistry terms
atom
Question | Answer |
---|---|
atom | smallest units of an element that still retains the chemical and physical properties of that element |
nucleus | overall positive charge |
protons | electrically positive charge |
neutrons | neutral or no charge |
molecule | multiple atoms that are bonded together |
cell | basic structural and functional units of an organism |
tissues | are groups of cells and the materials surrounding them to work together to perform a certain function |
organ | are structures that are composed of two or more tissues ; they have specific function and shape |
system | consists of related organs with a common function |
organism | any living individual |
four types of tissue | epithelial tissue,connective tissue,muscular tissue, and nervous tissue |
homeostatis | regulates body fluids |
body fluids | dilute, watery fluids containing dissolved chemicals inside and outside of the cell |
intracellular fluid | watery fluid inside of cells |
extracellular fluid | outside of cells |
interstitial fluid | most abundant fluid |
blood plasma | watery portion of blood |
synovial fluid | found inside all movable joints |
lymph | special fluid inside lymph vessels |
aqueous and vitreous humors | maintain eyebal shape |
cerebrospinal fluid | brain and spinal cord |
stressors | stimuli that disrupt homeostatis |
external stressors | outside- body temp. smells,and skin contact |
internal stressors | inside- low glucose, poison, psychological |
feed | (blank) |