is elbow upper or lower arm?
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Elbow Anatomy. The elbow is where the two bones of the forearm – the radius on the thumb side of the arm and the ulna on the pinky finger side – meet the bone of the upper arm -- the humerus. The lower end of the humerus flares out into two rounded protrusions called epicondyles, where muscles attach.
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Arm. The brachial artery is a blood supply vessel and is a continuation of the axillary artery. It begins under the pectoralis muscle and travels down the arm before splitting into two arteries (the radial artery and the ulnar artery) at the elbow.
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Function. The brachialis is known as the workhorse of the elbow. It is a major flexor of the forearm at the elbow joint, flexing the elbow while it is in all positions. The brachialis is the only pure flexor of the elbow joint–producing the majority of force during elbow flexion.
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The muscles of the anterior arm are the biceps, coracobrachialis, and brachialis. They are supplied by the musculocutaneous nerve. The triceps is the muscle of the posterior arm, and it is supplied by the radial nerve.
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The left upper arm has come to be used for MUAC measurement, because triceps and biceps muscle development may be asymmetric, being greater in the dominant arm than in the non-dominant arm (assumed to be the left). MUAC results may vary depending on where along the muscle belly of the biceps the tape is applied.
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It extends from the lateral side of the elbow to the thumb side of the wrist and runs parallel to the ulna. The ulna is usually slightly longer than the radius, but the radius is thicker. Therefore the radius is considered to be the larger of the two.
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Your upper arms are divided into three main muscle groups. Firstly, we have the biceps, which run along the front of the arm from your elbow to your shoulder joint. ... The triceps are a larger muscle group than the biceps, which means they have more potential to grow.
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After arising from the brachial plexus, the ulnar nerve descends down the medial aspect of the upper arm. At the elbow, it passes posterior to the medial epicondyle of the humerus and gives rise to an articular branch that supplies the elbow joint.
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['Shoulder—Made up of the scapula and the humerus. ... ', 'Elbow joint—A hinged-type joint formed by the humerus, ulna, and radius – The elbow can bend from approximately 0 – 160°.', 'Wrist joint- otherwise known as the radiocarpal joint.']
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['The elbow: The elbow joint is a synovial hinge joint with two articulations. The trochlea of the humerus articulates with the trochlear notch of the ulna, and the capitulum of the humerus articulates with the head of the radius. ... ', 'The radioulnar joints: Two separate joints exist between the radius and the ulna.']
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Inner Bicep – 6 out of 10 Fairly painful. The inner bicep/elbow area is host to a couple of sensitive nerves that run down the underside of your arm. Combine this with the thin, sensitive skin of the inner bicep, and you've got a fairly tender tattooing area.
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Anatomical Parts The humerus is the longest and largest bone of the upper extremity that runs from the shoulder to the elbow. It connects the scapula and the lower arm (consisting of the radius and ulna), and consists of three sections.
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The posterior and superior portions of the proximal ulna make up the olecranon process, which forms the bony tip of the elbow. Figure 6.44. Ulna and Radius The ulna is located on the medial side of the forearm, and the radius is on the lateral side.
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Bend the elbow of your injured arm to 90 degrees and rest the elbow on your side. Your forearm should rest across your abdomen. Hold a light dumbbell in the injured side's hand and, keeping your elbow against your side, slowly raise the dumbbell toward the ceiling. Stop rotating your arm if you feel strain.
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Anatomy of the Elbow. The elbow is a hinge joint made up of the humerus, ulna and radius. The unique positioning and interaction of the bones in the joint allows for a small amount of rotation as well as hinge action.
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The elbows are lateral to the abdomen. The skin is superficial to the skeleton. The heart is posterior/dorsal to the sternum. The lungs are deep to the ribs.
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The upper limb comprises many muscles which are organized into anatomical compartments. These muscles act on the various joints of the hand, arm, and shoulder, maintaining tone, providing stability and allowing precise fluid movement.