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Body Structure
Directional Terms
Term | Definition |
---|---|
abduction | movement away from the midsagittal (median) plane of the body or one of its parts |
adduction | movement toward the midsagittal (median) plane of the body |
medial | pertaining to the midline of the body or structure |
lateral | pertaining to a side |
superior (cephalad) | toward the head or upper portion of a structure |
inferior (caudal) | away from the head, or toward the tail or lower part of a structure |
proximal | nearer to the center (trunk of the body) or to the point of attachment to the body |
distal | further from the center (trunk of the body) or from the point of attachment to the body |
anterior (ventral) | front of the body |
posterior (dorsal) | back of the body |
parietal | pertaining to the outer wall of the body cavity |
visceral | pertaining to the viscera, or internal organs, especially the abdominal organs |
prone | lying on the abdomen, face down |
supine | lying horizontally on the back, face up |
inversion | turning inward or inside out |
eversion | turning outward |
palmar | pertaining to the palm of the hand |
plantar | pertaining to the sole of the foot |
superficial | toward the surface of the body (external) |
deep | away from the surface of the body (internal) |