noun. A type of chemical bond that is formed when the slightly positive hydrogen atom of a polar covalent bond forms an electrostatic link with the more electreonegative atom of a polar covalent bond in the same or another molecule.
In human anatomy, the biceps brachii (/ËbaÉªsÉps Ëbraeki.ËbrÃ¦ki/), aÉª commonly known as the, biceps is a-two headed muscle that lies on the upper arm between the shoulder and the. Elbow both heads arise on the scapula and join to form a single muscle belly which is attached to the upper. forearmn training the biceps brachii, it is important to distinguish between the long head and the short head of the biceps. The long head is the outer portion of the muscle. The short head is the inner portion of the muscle.
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.