From the 14th century on, Roman numerals began to be replaced in most contexts by more convenient Hindu-Arabic numerals; however, this process was gradual, and the use of Roman numerals in some minor applications continues to this day.
Triceps Brachii Muscle (Lateral Head). The lateral head of the triceps brachii muscle is a muscle of the back of the arm, originating from the back of the humeral shaft and inserting at the elbow.The triceps brachii has three heads (connective immovable muscle) and is the only muscle on the back of the upper arm.lick to read more below. The lateral head of the triceps brachii muscle is a muscle of the back of the arm, originating from the back of the humeral shaft and inserting at the elbow.
Literally meaning the three-headed muscle of the arm, the triceps brachii (L. tres, three; caput, head; brachium, arm.) consists of a long, lateral and medial head. It is primarily responsible for elbow extension. Known commonly as just the triceps, it is twice as big as its counterpart, the biceps brachii, and thus accounts for two-thirds of the upper arm mass. The triceps brachii makes up the posterior compartment of the arm. Itâs located on back of the back of the upper arm, situated inferior to the posterior deltoid and superior to anconeus. The lateral head of the triceps is positioned on the outside of the back of the arm, while the long head is on the inside.