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1 - Intro
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levels of organization
1. cells
2. tissues
3. organs
4. systems
5. organisms
cells are microscopic
measured in micrometers, 10
-6
meters
anatomical descriptions are based on the "anatomical position"
(also called "supine position" when laying flat)
planes of reference
saggital: left-right
coronal: front-back
transverse: top-bottom
directional descriptions
anterior-posterior
superior-inferior
medial-lateral
proximal-distal
hypertrophy
increase in cell size
hyperplasia
increase in number of cells
atrophy
decrease in cell size
metaplasia
change in cells shape
tissues
-Groups of similar cells with a common function.
-Tissues are precise organizations of similar cells that perform specialized functions.
histology
microscopic anatomy
all basic tissues and organs are derived from these 3 basic embryonic germ layers
1. ectoderm
2. mesoderm
3. endoderm
these steps happen prior to implantation in the uterus
zygote - morula - blastula... then inner cells mass forms embryonic disc.. which forms the 3 germ layers 1. ectoderm 2. mesoderm 3. endoderm
4 basic kinds of tissue
-epithelium
-connective tissue
-muscle
-nerve
Author
FuryX27
ID
37672
Card Set
1 - Intro
Description
exam 1 review
Updated
2010-09-27T20:06:43Z
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