Arm

In human anatomy, the arm is the second segment of the upper limb, between the shoulder girdle (which attaches it to the trunk) and the forearm. It articulates with the first in the scapula and with the second in the ulna.

The arm is also the analogous structure of a quadruped, in this case it is the front leg.

In colloquial language, the term arm is usually used for the complete upper extremity —or anterior, depending on the case—.

In political science and historiography, arm is used as a synonym for statement.

The upper arm bone is the humerus, which articulates with the scapula in the glenoid fossa, and with the ulna (ulna) and radius at its distal epiphysis.

• Pectoral muscles
  • Senior
  • Smaller hair.
  • Subclavian.
  • Major mountain range.

Same old face.

• Dorsal muscles. They connect the arm with the spine.
  • Trapecio (surface).
  • Wide Dorsal (surface).
  • Elevator de la escápula (deep).
  • Larger romboids (deep).
  • Minor rhomboids (deep).

• shoulder muscles. They originate in the scapula and end up in the humerus.
  • Supraespinoso.
  • Infraespinoso.
  • Smaller (short).
  • Older (older).
  • Subscapular.
  • Deltoids.
• Arm muscles.
• Previous group (siders):
  • Brachial biceps. It has two portions, long and short; it is the bending muscle of the forearm.
  • Previous car.
  • Coracobrachial. Through this muscle it passes through the nerve skin muscle
• Subsequent group (extensive):
  • Brachial triceps. It has three portions, long, external or vast external or internal or vast; it is the forearm's extender muscle.
  • Anconeo. Proximal insertion: posterior face of the lateral epicondile of the humero. Distal insertion: lateral side of the olecranon and subsequent proximal portion of the cubit. Its inervation is given by the radial nerve (C5-T1), and fulfills the function of helping the brachial triceps in the elbow extension. His irrigation comes from the deep humeral artery.

Related expressions

• Give someone's arm. Offer it to support.
• Have arm. Having leftover strength or strength.
• Give a pork arm. Give something good.
• Don't give your arm to twist. Do not discover your weakness in an argument.
• Keep your arm healthy to anyone. Having reserve flow, after having made considerable expenses or disbursements.
• To be someone's right arm. To possess all your trust, to be the person of your greatest intimacy and appreciation.
• Arm to arm or armband. Body to body and with equal weapons.
• Left arm. With your arms alone without weapons. To live strength, from power to power.
• Open your arms or open arms. With the greatest pleasure, pleasure and love.
• Give your arms. Open, narrow.
• Being with your arms crossed. Stay idle when others work.
• Delivering in someone's arms or putting in another's arms. Trust him entirely, count all trances with him.
• Have arms. Count with vouchers or protectors, have who favors and sponsor something.
• Come or turn with your arms crossed. Return one from a given part, without having done what they ordered him to leave.
• To get rid of ties, before head than arms. More can be a maña than strength.