Ch 1 Flashcards
What body function might a respiratory therapist strive to
improve? What structures are involved?
Give your own example of how the structure of a part of the
body is related to its function.
anatomy
is the science of body structures and the relationships among them
physiology
is the science of body functions.
Describe the body’s six levels of structural organization.
the chemical, cellular, tissue, organ, system,
and organismal
list 11 body systems of the body
integumentary
nervous
cardiovascular
muscular
skeletal
lymphatic
digestive
reproductive
respiratory
endocrine
urinary
molecules
two or more atoms joined together
atoms
the smallest unit of matter that participates in chemical reactions
. What body function might a respiratory therapist strive to
improve? What structures are involved?
chemical level
the very basic level including atoms (letters in alphabet)
cellular level
molecules combine to form cells (words)
tissue level
groups of cells and the matericals surrounding them that work togtehr to perform a particular function ( sentence)
organ level
different types of tissues joined together (paragraphs)
organs
structures that are composed of two or more different types of tissues; they have specific functions and usually have recognizable shapes
system level
a system (chapter)
organismal level
an organism any living individual (book)
metabolism
the sum of all chemical process that occur in the body
catabolism
first phase- the breakdown of complex chemical substances into simpler componentss
anabolism
2 phase -of metabolism the building of complex chemical substances from smaller, simpler components
responsiveness
the body’s ability to detect and respond to changes
basic life process of human body
metabolism
responsiveness
movement
growth
differentiation
reproduction
movement
motion of the whole body, individual organs, single cell and even tiny structures inside cells
growth
increase in body size that results from an increase in size of existing cells, and increase in the number of cells, or both
differentiation
is the development of a cell from an unspecialized to a specialized state- ex precursor cells
reproduction
1- the formation of new cells for tissue growth, repair, or replacement
2 the production of a new individual
homeostasis
the maintenance of relatively stable conditions in the body’s internal environment
body fluids
dilute, watery solutions containing dissolved chemical that are found inside cells as well as surrounding them
intracellular fluid
ICF- the fluid inside body cells
extracellular fluid
ECF- fluid outside the body cells
interstitial fluid
the ECF that fills the narrow space between cells of tissues
blood plasma
fluid within blood vessels
lymph
fluid within lymphatic vessels
cerebrospinal fluid
fluid in and around brain and spinal cord
synovial fluid
fluid within joints
aqueous humor and vitreous body
fluid of the eye
feedback system or feedback loop
the body can regulate its internal environment through many feedback systems- cycle of events in which the status of the body conditions is monitored, elevated, changed, remonitored, reevaluated, etc.
controlled condition(controlled variable) example
monitored variable- ex body temp, BP, blood glucose.
stimulus
any disruption that changes a controlled condition
receptor
body structure that monitor changes in a controlled condition and send input to a control center
afferent pathway
a neural pathway that conducts impulses from a sense organ TOWARD the brain or spinal cord or from one brain region to another region
input
that send nerve impulses or chemical signals to a control center
control center
the body, for example, the brain, sets the narrow range or set point within which a controlled condition should
be maintained, evaluates the input it receives from receptors, and
generates output commands when they are needed
output
from
the control center typically occurs as nerve impulses, or hormones or other chemical signals
efferent pathway
nerve structures through which impulses are conducted from a nerve center toward a peripheral site
effector
a body structure that receives output from the control center and produces a response or effect that changes the controlled condition