Anatomical position

Standard positioning of the body as standing; feet together, arms to the side; with head, eyes, and 

palms of hands forward

Reference planes

Planes dividing the body to describe locations: sagittal, coronal, and transverse

Organ

A structure formed from various tissues that performs a specific function in an organism

Directional termonology

Words used to explain relationships of locations of anatomical elements ( distal, posterior, medial etc)

Coronal and frontal plane

Front and back division

Transverse or cross-sectional plane

Top and bottom division

Sagittal or median plane

Left and right division

Proximal

Closer to the structure

Distal

Farther from the structure

Lateral

Away from the body