Test 1 terms Flashcards
anatomy
the study of internal and external structures of the body and the physical relationships among body parts
physiology
the study of how living organisms perform their vital functions
organ systems
groups of organs that function together in a coordinated manner
histology
the examination of tissues
homeostasis
refers to the existence of a stable internal environment
receptor
a sensor that is sensitive to a particular stimulus or environmental change
effector
a cell or organ that responds to the commands of the control center and whose activity either opposes or enhanses the stimulus
negative feedback
the response of the effector negates the stimulus and a normal range is achieved
positive feedback
the response of the effector increases change of the stimulus and the body is moved away from homeostasis
tissues
collections of specialized cells and cell products that perform a limited number of functions
blasts
immature cell, building cells
clasts
lysis, breakdown cells
cytes
mature cells
avascular
lack blood vessels
