The main function of the muscular system is movement. Muscles are the only tissue in the body that has the ability to contract and therefore move the other parts of the body. Related to the function of movement is the muscular system's second function: the maintenance of posture and body position
The glute muscle consists of three muscles which make up the buttocks: the gluteus maximus, gluteus medius and gluteus minimus. The functions include extension, abduction and hip internal and external rotation.
The abs are divided into four groups: the external obliques, the internal obliques, the transversus abdominis, and the rectus abdominis. They provide torso flexion and rotation aswell as spinal stability.
The latissimus dorsi muscles, known as the lats, are the large muscles that connect your arms to your vertebral column. Your lats help with shoulder and arm movement and support good posture.
The pecs are the muscles that connect the chest with the upper arm and shoulder. It contains four muscles: the pec major, pec minor, serratus and subclavius. They move the arms across the body and up and down.
The deltoid muscle is the main muscle of the shoulder. It consists of three muscle heads: the anterior deltoid, lateral deltoid, and posterior deltoid. All assist with arm elevation of the arm.
The trapezius is an upper back muscle. It runs from the occipital bone in the skull to the thoracic spine in the back. There are three segments: superior, middle, and inferior. Assist in moving the neck and shoulders.
Calves are on the back of the lower leg. Consisting of the gastrocnemius and soleus that join to the achilles tendon. During walking, running, or jumping, the calf muscle pulls the heel up to allow forward movement.
The hamstrings at the back of the thigh, consist of three muscles: biceps femoris, semitendinosus and semimembranosus, all attach the back of the knee. Providing hip extension, and flexion at the knee.
The forearm contains many muscles, including the flexors and extensors of the digits, a flexor of the elbow, and pronators and supinators that turn the hand to face down or upwards.
The biceps is a muscle on the front part of the upper arm. The biceps includes a “short head” and a “long head” that work as a single muscle. The main function is flexion of the elbow and supination of the forearm.
The triceps muscle consists of a long, medial and lateral head, that originate from the humerus and scapula, and attach to the ulna. The main function of triceps is extension of the forearm at the elbow joint.
The quadriceps muscle consists of four muscles in the front thigh that connect to the knee. They straighten the knee, move the leg forward and absorb shock during walking.