Essential Life Processes Flashcards
(24 cards)
Metabolism
the sum of all chemical processes that happen in the body
Catabolic
chemical breaking down
Anabolic
chemical building up
Responsiveness
is the body’s ability to detect and respond to changes which might represent and opportunity or threat
movement
any motion, from within a single cell to the motion of our limbs
growth
the increase in body size due to the increase in existing cells or the number of cells or both.
differentiation
is the development from an unspecialized cell to a specialized state
reproduction
the creation of new cells
Homeostasis
the equilibrium in the body’s internal environment, a dynamic condition meant to keep the body functions within a narrow range
bodily fluids
dilute, watery solutions containing dissolved chemicals inside or outside of the cell
intracellular fluids
fluids within the cell
extracellular fluids
is fluid outside of cells
interstitial fluid
fluid between cells and tissues
Blood Plasma
the ECF within blood vessels
Lymph
the ECF within lymphatic vessels
Cerebrospinal fluid
is the ECF in the brain and spinal cord
synovial fluid
the ECF within joints
Aqueous humor
the fluid within the eyes
Control of homeostasis is challenged by
physical insults such as heat
internal environment such as drop in blood glucose
physiological stress such as demands from school
Receptor
is a body structure that monitors changes in a controlled condition and sends an input to the control center (Afferent Pathway)
Control center
sets the ranges of values to be maintained. evaluates input and generates output command (efferent pathway)
effector
receives the output and produces a response or effect that changes the controlled condition
Negative feedback
reverses a change in a controlled condition
positive feedback
reinforces a change in one of the body’s controlled conditions. childbirth and blood clotting are the only examples
