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Intro A&P CH1


Structural Levels of Organization Atoms, Cells, Tissues, Organs, Systems
Atoms Composed of Protons, Electrons & Neutrons which is the chemical level
Cells Smallest structural units - orgainzations of various chemicals
Tissues organizations of similar cells
Organs Organizations of different kinds of tissues
Systems Organizations of many different kinds of organs
Anatomical Position Standing erect with arms at sides & palms faced forward.
Anatomical Directional Terms Superior InferiorAnterior PosteriorVentral DorsalMedial LateralProximal DistalSuperficial Deep
Superior Toward the head
Inferior Toward the feet, lower, below
Anterior Front, in front of
Posterior Back, in back of
Medial Toward the midline
Lateral Toward the side
Proximal Toward or nearest the trunk, or nearest the point of origin of a structure
Distal Away from or farthest from the trunk, farthest from a structures point of origin.
Superficial Near the body surface
Deep Farther away from the body surface
Planes of Section Sagittal, Midsagittal, Frontal & Transverse
Sagittal Lengthwise - divides structure into LEFT & RIGHT sections.
Midsagittal Divides into 2 EQUAL halves
Frontal Lenghtwise divides into anterior (front) & posterior(back)sections
Transverse Horizontal plane dividing into UPPER & LOWER sections
2 Major cavities Dorsal & Ventral
Created by: MandiBeeson