Posterior arm muscle diagram. The first step of understanding and calculating torque is identifying the moment arm. Broadly considered human muscle like the muscles of all vertebrates is often divided into striated muscle smooth muscle and cardiac muscle. Serratus posterior superior trigger point diagram pain patterns and related medical symptoms. The upper arm contains two compartments known as the anterior compartment and the posterior compartment.
The axillary nerve travels through the quadrangular space with the posterior circumflex humeral artery and vein. Before learning about the different muscles its important to. The humerus h j u m er e s plural. The myofascial pain pattern has pain locations that are displayed in red and associated trigger points shown as xs.
The radius and ulna are the two bones of the forearm. Humeri is a long bone in the arm that runs from the shoulder to the elbowit connects the scapula and the two bones of the lower arm the radius and ulna and consists of three sectionsthe humeral upper extremity consists of a rounded head a narrow neck and two short processes tubercles sometimes called tuberosities. The moment arm lever arm of a force system is the perpendicular distance from an axis to the line of action of a force. The axillary nerve or the circumflex nerve is a nerve of the human body that originates from the brachial plexus upper trunk posterior division posterior cord at the level of the axilla armpit and carries nerve fibers from c5 and c6.
Identify the lettered muscles in the diagram of the human anterior superficial musculature by matching the letter. Vladimir janda muscle function testing 1983pdf. It forms the ball and socket joint of the shoulder with the scapula and forms the elbow joint with the lower arm bones. The humerus is the bone of the upper arm.
In other words moment arm determines the quality of the torque.