BIOL235_Chap1 Flashcards
Anatomy
science of body structures and relationships between them
Physiology
science of bodyfunctions - science of how the body parts work
Body’s 6 levels of structural organization
- chemical level
- cellular level
- tissue level
- organ level
- system (organ-system) level
- Organismal level
Chemical level of structural organization
letters of the alphabet
atoms and molecules
Cellular level of structural organization
words, smallest elements that make sense
molecules combined to form cells
Tissue level of structural organization
words put together to form sentences
tissues are groups of cells and the materials surrounding them that work together to perform a particular function
4 types: epithelial tissue, connective tissue, muscular tissue, + nervous tissue
organismal level of structural organization
the whole book
organism = any living individual , all the parts of the human body functioning together constitute the total organism
Organ level of structural organization
different types of tissues are joined together to form organs
paragraphs of sentences
organs are structures that are composed of 2+ diff types of tissues, they have specific functions and usually recognizable shapes
System (organ-system) level of structural organization
a chapter of paragraphs
a system consists of related organs (paragraphs) with a common function
atom
smallest units of matter that participate in chemical reactions
molecules
2+ atoms joined together
cells
the basic structural + function units of an organism that are composed of chemicals
smallest living units of the human body
tissues
groups of cells and the materials surrounding them that work together to perform a particular function
-epithelial, connective, muscular, + nervous
4 types of tissues
- epithelial
- connective
- muscular
- nervous
organs
structures that are composed of 2+ different types of tissues; they have specific functions and usually recognizable shapes
system
consists of related organs with a common function
organism
all the parts of the human body functioning together constitute the total organism
anabolism
phase of metabolism which involves the building up of complex chemical substances from smaller, simpler components
Metabolism
the sum of all chemical processes that occur in the body
2 phases: anabolism + catabolism
catabolism
phase of metabolism which involves the breakdown of complex chemical substances into simpler components
basic life processes
- metabolism
- responsiveness
- movement
- growth
- differentiation
- reproduction
responsiveness
the body’s ability to detect + respond to changes
movement
motion of the whole body, individual organs, single cells, + tiny structures inside cells
differentiation
the development of a cell from an unspecialized to a specialized state
growth
an inc in body size that results from an inc in size of existing cells, an inc in number of cells, or both
reproduction
the formation of new cells for tissue growth, repair, or replacement
OR
the production of a new individual
intracellular fluid (ICF)
fluid within cells
homeostasis
the maintenance of relatively stable conditions in the body’s internal environment
body fluids
dilute, watery solutions containing dissolved chemicals that are found inside cells + surrounding them
intracellular fluid + extra-cellular fluid + interstitial fluid
Extracellular fluid (ECF)
fluid outside body cells
interstitial fluids
ECF (extracellular fluid) that fills narrow spaces between cells of tissues
Blood plasma
ECF within blood vessels
lymph
ECF in lymphatic vessels
cerebrospinal fluid
ECF around the brain + spinal cord