Chapter 1 - Intro to the Human Body Flashcards
Anatomy
study of structures and relationships
Physiology
study of functions of structures
6 basic life processes
metabolism, responsiveness, movement, growth, differentiation, reproduction
Metabolism
sum of all chemical reactions that occur in the body
Responsiveness
ability to sense changes in the environment and respond to them
Growth
increase in size (number of cells vs. size of cells)
Hypertrophy
increase in size of cells, after puberty (opposite of atrophy)
Hyperplasia
increase in number of cells, before puberty
Differentiation
change in cell from unspecialized to a specialized state
Reproduction
formation of new cells for growth, repair or replacement or production of a new individual
6 levels of structural organization
chemical, cellular, tissue, organ, system, organism
Homeostasis
condition in which the body’s internal environment remains relatively constant within physiological limits
Interstitial fluid
bathes cell, internal environment
Receptor
body structure that monitors changes in a controlled condition and sends input to a control center
Control center
sets range of values within which a controlled condition should be maintained, evaluates input/generates output
Effector
body structure that receives output from control center and produces a response that changes a controlled condition