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anatomy

week 1-6

TermDefinition
Levels of organization - chemical level - organelle level - cellular level - tissue level - organ level - system level
chemical level atoms ----> molecules---->macromolecules
organelle level chemical structures may be organized within larger units called CELLS to form ORGANELLES (tiny organs)
types of organelles: - mitochondria: powerhouse--> provide energy needed by the cellto carry on day-to-day function, growth and repair
GOLGI APPARATUS "packaging" - also called the Golgi complex - storing material for future use or for export from the cell
Endoplasmic reticulum (ER)- network of channels - "highway" for the movement of chemicals and as site for chemical processing
Cellular level- cells -cells are the SMALLEST and most numerous structural unit. - different cells perform unique functions: 1. fat cells-permits storage of fat 2. cardiac muscles- contract with great force
Tissue - is a group of a great SIMILAR cells - are surrounded by the matrix - 4 major tissue types: 1. epitheilial 2. connective 3. muscle 4. nervous
organs structure made up of several kinds of TISSUES
system level- most complex involves varying numbers of differnt kinds of ORGANS
Ipsilateral >< Contralateral same side >< opposite side
medullary inner region or core of an organ Ex: innerregion of kidney= medulla
cortical outer region or layer of an organ ex: outer layer of kidney tissue= cortex
basal base or widest part of an organ
apical marrow tip of an organ= apical point (heart)
Body planes 1. sagittal= divide body into L&R side 2. coronal or frontal plane= divide into anterior and posterior portions 3. Transverse plane or horizontal plane= divide into upper and lower part 4. Longitudinal section = a cut along axis of the organ 5. obliqu
body cavities 1. dorsal cavities: inclues cranial cavity (stores the brain) and spinal cavity (location of the spinal cord) 2. Ventral cavities: thoracic and abdominopelvic
Created by: macy5793
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