| 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) |
Ch.18 LTI-MA 509
