Muscular Anatomy

Muscular system

• 3 types of muscular tissue1. Smooth

Involuntary – line internal organs

Move substance through out the body

1. CardiacFound only in the heart – involuntary

1. SkeletalVoluntary

Main source of power and movement

• There are over 600 muscles in the body, but for this class were are going to learn just a few.

• We will learn the highlighted muscles on the following slides

Muscle name Strengthening exercises

Trapezius Upright Rows . shoulder shrugs

Pectoralis major Push-ups, Pull ups, bench press

Deltoid Lateral shoulder raise

Latissimus dorsi Chin-ups, rope climb, rowing, Lat pull-down

Biceps Arm curls, chin-ups

Triceps Push-ups, dips, bench press

Rotator Cuff Internal and external rotation

Rectus abdominis Bent knee sit-ups

Obliques Core exercises

Quadriceps The four muscles of the quadriceps are the rectus femoris, vastus lateralis, vastus intermedius and the vastus medialis.

Leg press, squats, jump rope

Hamstrings The hamstrings consist of three muscles -- the semitendinosus, the semimembranosus and the biceps femorus.

Hamstring curls, lunges

Gluteus Squats, stair climbing

Gastrocnemius Calf Raises, jump rope

Soleus Bent-knee calf raises

The Rotator Cuff

• Four of the muscles that act at the shoulder are commonly called the rotator cuff.

• The rotator cuff’s primary stabilizing function is to hold the humeral head in the glenoidfossa to prevent subluxation (dislocation).

• The muscles of the rotator cuff can be remembered using the acronym SITS:– Supraspinatus– Infraspinatus– Teres minor– Subscapularis