Question | Answer |
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 |