Muscles

The muscles are listed in reverse order. Start at the bottom (Deltoid) and work your way up to extensors. 

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Extensors (Opposite of flexors. They pull the bones father apart extending the body.)

Flexors (There are many flexor muscles in the body. For the most part, flexor muscles bring bones closer together (like a rolly polly)).

Erector Spinae (loacted on the low back this muscle pulls the spine upward straightening the back. It is the opposite or antagonist of the abdominal muscles)

Glutes (Booty or bumper muscles. These muscles play an imporant role in standing, walking, running and squatting.)

Hamstring (The three muscles that make up the hamstrings are on the back (posterior) of the upper leg. These muscles are involved in the flexion of the lower leg.)

Gastrocnemius (This muscle is superficial (on top of) to the soleus and considered to be the ‘stomach of the leg.’ This muscle’s actions are very similar to the soleus. The major difference is the power that the gastrocnemius contracts with. It is involved in walking, standing, running and jumping.)

Soleus (This muscle in an antagonist (opposite) to the tibialis anterior. It assists in standing and walking. It is located on the posterior (back) lower leg. It is one of two major calf muscles.)

Tibialis Anterior (Muscle of the outside (lateral) portion of the tibia bone. The chin bone is the tibia bone. Tibia is the bone you can ‘touch.’ The tibialis anterior assists in dorsiflexion of the foot (brings the toes up))

Abdductor (abductors pull the legs away from the body. Antagonist (opposite) of the adductors.)

Adductors (Adductors pull the legs in toward the mid-line of the body. The adductor muscles are attached from the lower (inferior) pelvis to the inner (medial) femur)

Sartorius (Longest muscle in the human body. It runs from the hip across the front of the thigh, ending at the inner knee. If you look at the bottom of your foot, your sartorius muscle is the main contributor to that action.)

Obliques (Core muscles on the sides of your tummy. These muscles, like the rectus abdominus, help support your upper torso and move it side to side.)

Rectus Abdominus (These are your tummy muscles. The middle or core of your body is crucial to posture and upper torso movement. These are your abs.)

Latissimus Dorsi (These are the big, strong back muscles that help pull our arms downward. Swimmers normally have really strong latissimus dorsi. When you are performing a pull-up, your latissimus dorsi is turned on!)

Rhombodius (There are four rhomboid muscles. A major and minor on both the left and right side of the middle-upper back. These muscles retract the scapula as well as help it rotate.)

Trapezius (Four sections of the trapezius which is located on you upper middle back and extends to your mid-lower neck.)

Pectoralis (Your chest/push up muscles)

Tricep (Opposite of the bicep. Proximal posterior of the arm (upper-back). This muscle extends the forearm straightening the elbow.)

Bicep (Proximal anterior of the arm (upper-front). This muscles pulls your forearm and hand bending the elbow.)

Deltoid (Top of shoulder. The front, middle, and back are the three sections of the deltoid muscle.)