When you are studying anatomy and physiology for your fitness instructor qualifications, sports therapy exams or even just for fun! It is a lot easier if you learn the following terms that are commonly used in anatomy textbooks. Anterior – in front, at the front of the body. Posterior – behind, at the rear of the body. Medial – towards the midline. Inferior – the lowest aspect of a structure. Lateral – away from the midline. Superior – the upper aspect of a structure. Sub – underneath. Superficial – closer to the body surface. Deep – further from the body surface. Proximal – closer to the trunk. Active IQ, Level 2 certificate in fitness instruction, anatomy and physiology for exercise, the skeletal system (2014) You can test your understanding of these terms via this link HERE.