Functions of a lever system. Lever systems have two main functions; firstly to increase the resistance that a given force can move and secondly to increase the speed at which a body moves. In addition, different types allow different ranges of movement. In the image below, the triceps is the effort, the fulcrum is the elbow joint and the Triceps muscle, any muscle with three heads, or points of origin, particularly the large extensor along the back of the upper arm in humans. It originates just below the socket of the scapula (shoulder blade) and at two distinct areas of the humerus, the bone of the upper arm. It extends downward. The triceps brachii is a three-headed muscle, primarily responsible for elbow extension. The heads of the triceps attach at the lateral part of the scapula below the glenoid cavity of the shoulder (the long head) and on the humerus (the lateral head on the upper half of the humerus and the medial head below it and mostly covered by the long and Loose connective tissue layer that surrounds skeletal muscle fascicles. Fixator. A specific type of synergist that acts to hold a bone steady during an action. Epimysium. Loose connective tissue that covers the entire muscle. Fascicles. Bundles of muscle fibers, wrapped in connective tissue, within a muscle. What is a fascia. Radial nerve. The suprascapular, axillary, and radial nerves. The radial nerve is a nerve in the human body that supplies the posterior portion of the upper limb. It innervates the medial and lateral heads of the triceps brachii muscle of the arm, as well as all 12 muscles in the posterior osteofascial compartment of the forearm and the Attachments, innervation and functions of the muscles of the shoulder joint. The muscles of the shoulder support and produce the movements of the shoulder girdle. They attach the appendicular skeleton of the upper limb to the axial skeleton of the trunk. Four of them are found on the anterior aspect of the shoulder, whereas the rest are located Identify the movement and function of the pectoral girdle and upper limbs; The forearm flexors include the biceps brachii, brachialis, and brachioradialis. The extensors are the triceps brachii and anconeus. The pronators are the pronator teres and the pronator quadratus, and the supinator is the only one that turns the forearm anteriorly The biceps brachii is a bi-articular muscle, which means that it helps control the motion of two different joints, the shoulder and the elbow. The function of the biceps at the elbow is essential That's because we have the knowledge that the long head of the triceps functions to both extend the shoulder and extend the elbow. So, we can combine these two functions into one movement. Option 1: Modified Pushdowns. One option is to simply modify your traditional rope or bar pushdowns. Instead of keeping your elbows locked into your sides Inferior gemellus forms part of the triceps coxae muscle complex, which is located in the deep layer of the gluteal region between the piriformis and quadratus femoris muscles.Inferior gemellus is overlaid superficially by the gluteus maximus muscle, while the hip joint is located deep, or anterior, to it. The nerve to quadratus femoris descends deep to inferior gemellus after exiting the X0KB.