Anatomy Flashcards
Anatomy
the science that studies the structure of the body
physiology
the way in which a living organism or bodily part functions
organelle
a biological structure that performs a distinctive function inside a cell
cell
makes up all living organisms and the tissues of the body
tissue
a group of cells that have similar structure and that function together as a unit
organ
a part of the body that is made up of cells and tissues that perform a specific function
organ system
group of organs that work together in the body to perform a complex function
organism
something having many related parts that function together as a whole
metabolism
all the chemical processes going on continuously inside your body that allow life and normal functioning
homeostasis
the tendency toward a relatively stable equilibrium in the body
negative-feedback mechanisms
Body performing homeostasis
receptor
an organ or cell able to respond to light, heat, or other external stimulus and transmit a signal to a sensory nerve
control center
brain and other parts of the body monitor and react to deviations from homeostasis using negative feedback
effector
a bodily part that becomes active in response to stimulation
positive-feedback mechanism
a process that occurs in a feedback loop which exacerbates the effects of a small disturbance