skeletal definitions

prone

lying face down

supine

lying face up

superior/cranial

towards the head

inferior/caudal

away from the head

anterior/ventral

towards the front of the body

posterior/dorsal

towards the back of the body

medial

towards midline of the body

lateral

away from midline of the body

proximal

towards the origin or attachment site

distal

away from origin or attachment site

superficial

towards the surface of the skin

deep

internal, away from the surface of the skin