week 1 lecture notes Flashcards
anatomy
study of body structures-names and locations
physiology
study of body functions
atoms
fundamental particles of chemicals
atoms and molecules form what
cells
cells
structural and functional unit of all living things
cells bind and function together to form what
tissues
tissues
collection of a specific cell type bound and functioning together
4 types of tissues
epithelial connective muscular nervous
tissues bind and function together to form what
organs
organs
multiple tissues bound and functioning together
organ systems
multiple organs working together and carrying out general bodily functions
hormones
signaling molecules in the body
homeostasis
maintenance of normal internal body conditions
homeostasis is maintained by what 2 means
negative and positive feedback mechanisms
negative feedback mechanism ex: sweating when hot
body process triggered when a body condition starts to deviate from homeostasis that causes the body to change it’s functioning to return to homeostasis
positive feedback mechanism ex: child birth
body process triggered when a body condition starts to deviate from homeostasis that causes the body to change it’s functioning to go farther from homeostasis
chemistry
study of chemicals (atoms and molecules)
3 subatomic particles
neutrons-neutrally charged-located in nucleus protons-positively charged-located in nucleus electrons-negatively charged-orbit nucleus
elements
different types of atoms distinguished by the specific number of protons in a given atom-denoted by a one or two letter symbol
top number in each box of table of elements
number of protons in that atom
