Medical prefix: A prefix employed in medical terminology. Medical words are often put together, cobbled from two or more building blocks. Among these building blocks are the prefixes. Examples of prefixes used in medicine include: a-: Prefix much employed in the health sciences indicating not, without, -less as, for examples, in alexia (not read), aphagia (not eat), aphonia (not voice, voiceless).
Fibers of the middle (medial) segment of the trapezius cause an upward rotation of the scapula and this helps to elevate the arm. The medial fibers of the trapezius help squeeze the scapula together, and this is the region that is most active in the chest expander exercise.he expanders should begin in front of your torso. Raise your arms and forearms until they are parallel to the floor and maintain this arm height throughout the exercise. 2. Begin with your elbows pointing outward and with your palms facing each other and your hands at the level of your sternum.
Pectoralis Major. These are the two large chest muscles primarily the pushing muscles of the upper body. It makes up most of the upper body. As you raise and lower your body during a push-up, the pectoralis major is doing most of the work to raise and lower your body.Deltoids.he following steps explain how to do a push-up: 1  Lower your body down on to the floor or a carpeted floor with your palms under your shoulders-slightly wider than shoulder width. 2  Keep your feet close together and dig your toes into the floor helping to stabilize the lower part of your body.