Posterior.
caudalposterior is toward the back, but caudal is toward the tail
Dorsal means situated on the back or on the back part of an organ. In contrast, ventral means situated on the belly side.
Toward or nearest the middle/midline is MEDIAL
Dorsal is the medical term meaning back.
Proximally
Inferior is the medical term meaning toward the lower parts of the body.
Dorsum is a medical term meaning back. For example the dorsum of the hand is commonly known as the back of the hand.
The medical term meaning "conveying toward the center" is "centripetal." In anatomical contexts, it often refers to processes or structures that move inward toward the center of the body or an organ. This term is typically contrasted with "centrifugal," which refers to movement away from the center.
Dorsal
A movement toward the midline is called adduction. Adduct means to bring towards the center. The opposite, "abduction" is moving away from midline.
Pertaining to going toward the front part = AnteriorlyPertaining to going toward the back part = PosteriorlyPertaining to going toward the side = LaterallyPertaining to going toward the middle = mediallyDorsal or posteriad
Inferior or caudal mean toward the lower part of the body.