human anatomy chapter 1 Flashcards
anatomy
branch concerned about the about the bodily structure
physiology
deals with normal functions of the body
organelle
organized or special structures in the cell
cell
smallest structural and functioning unit of an organism
tissue
material that makes up plants and animals
organ
part of an organism that is stored within and has a specific function
organ system
group of organs that work together
organism
animal, plant, or single celled life form
metabolism
chemical process that occurs in living organisms to maintain life
negative-feedback mechanism
chemical function that causes a decrease in function
receptor
organ that can react to external sources
control center
maintenance of relatively stable internal conditions
homeostasis
regulates internal environment
effector
becomes active do to a stimulus
positive feedback mechanism
enhances the stimulus
anatomical position
erect position of the body
superior
above something
inferior
below something
anterior
towards the front of the body
posterior
towards the back of the body
sagittal plane
different ways that the human body can be divided or cut up
transverse plane
horizontal plane that passes through the body
frontal plane
vertical plane that passes through the body
oblique plane
divides he body into anterior and posterior
thoracic plane
horizontal plane that divides the body into the superior and inferior mediastinum
abdominal cavity
hard and empty space
