Question

We have multiple important muscles or muscle groups in the body. Chose one of the following and detail its attachment, insertion, the part of the body it moves, and anything else of particular importance: quadriceps; biceps; triceps; hamstrings; gluteus maximus; gluteus minimus; gastrocnemius; Sartorius; rotator cuff; pectoral; wrist flexors; wrist extensors; or tibialis anterior flle in the nenvous system Choose one and detail its basic function

Answer 1

The contraction of skeletal muscles allows the movement at synovial joints. One end of the joint is attached to the fixed or less movable joint and the other joint is attached to the freely movable joint.

The fixed end is called as “origin” and the freely movable end is known as “insertion.” The bones move as the muscles pull on them. Thus, the three distinguishable parts of a muscle are, origin, insertion, and body.

Biceps brachii is a muscle of anterior humerus (of the upper arm). When the forearm is flexed, this two-headed muscle bulges. This muscle is responsible for the flexion of elbow and supination of the forearm.

The origin of biceps brachii is scapula and its insertion is radius (tuberosity at the proximal end). It is innervated by the musculocutaneous nerve.