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What do posterior, medial, proximal, peripheral, and superficial mean?

Answer 1

See below.

Posterior refers to the part of the body facing downward (the bottom side) in a standard anatomical position. (The opposite is anterior.)

Medial refers to anything toward the center of the body. (The opposite is lateral.)

Proximal refers to a point closer to a reference point. (The opposite is distal.)

Peripheral refers to anything away from the center and perceiving the outer edges of things. (The opposite is central.)

Superficial refers to structures closer to the exterior of the body. (The opposite is deep.)

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Answer 2

Lucas Aguilar

The terms posterior, medial, proximal, peripheral, and superficial all relate to different parts of the body: posterior is the back side of the body, medial is the middle, and superficial is closer to the surface.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.