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However, in common, literary, and historical usage, arm refers to the entire upper limb from shoulder to wrist. This article uses the former definition; see upper limb for the wider definition. [8] In primates, the arm is adapted for precise positioning of the hand and thus assist in the hand's manipulative tasks. The ball and socket shoulder ...
The shoulder girdle [5] or pectoral girdle, [6] composed of the clavicle and the scapula, connects the upper limb to the axial skeleton through the sternoclavicular joint (the only joint in the upper limb that directly articulates with the trunk), a ball and socket joint supported by the subclavius muscle which acts as a dynamic ligament. While ...
Extension of the hip or shoulder moves the arm or leg backward. [11] Even for other upper extremity joints – elbow and wrist, backward movement results in extension. The knee, ankle, and wrist are exceptions, where the distal end has to move in the anterior direction for it to be called extension. [13] [page needed]
Arm: Couter or cowter: Plate that guards the elbow. Eventually became articulated. May be covered by guard of vambrace (see below). Spaulder: Bands of plate that cover the shoulder and part of upper arm but not the armpit. Pauldron: 15th: Covers the shoulder (with a dome shaped piece called a shoulder cop), armpit and sometimes the back and ...
For example, the right arm and leg are controlled by the left, contralateral, side of the brain. Ipsilateral (from Latin ipse ' same '): on the same side as another structure. For example, the left arm is ipsilateral to the left leg. [8] Bilateral (from Latin bis ' twice '): on both sides of the body. [8]
The anterior compartment of the arm is also known as the flexor compartment of the arm as its main action is that of flexion. The anterior compartment is one of the two anatomic compartments of the upper arm, the other being the posterior compartment. The compartment contains three muscles; the biceps brachii, the brachialis and the ...
To achieve a sculpted look with the upper body, you need a well-rounded routine made up of exercises that target every part of the arm, including the shoulders, triceps and biceps.. Strong arms ...
The proper plural form of the Latin adjective biceps is bicipites, [23] a form not in general English use. Instead, biceps is used in both singular and plural (i.e., when referring to both arms). The English form bicep, attested from 1939, is a back formation derived from misinterpreting the s of biceps as the English plural marker -s. [24] [25]