The Navy SEAL Physical Fitness Guide - Human Performance

276 Common Anatomical Terms and Diagrams

*Major muscles involved in movement

Hip Extensors

Gluteus maximus*,

semitendinosus,

semimembranosus*,

biceps femoris*

Extends leg backward at hip

joint

Hip/Thigh Adductors

Adductor magnus*,

adductor longus*,

adductor brevis*,

pectineus, gracilis

Moves leg toward midline

Hip/Thigh Abductors

Gluteus medius*,

gluteus minimus*,

tensor fasciae latae,

sartorius

Moves leg away from

midline

Knee Flexors

Biceps femoris*,

semimembranosus,

semitendinosus, gracilis

Flexes or bends leg at knee

joint

Knee Extensors

Quadriceps femoris*,

(vastus lateralis*,

vastus intermedius*,

vastus medialis, rectus

femoris), sartorius

Extends leg forward at knee

joint. Vastus medialis

muscle plays important role

in prevention of

overuse injuries of knee

Calf Muscles Gastrocnemius, soleus Extends foot at ankle

Tibialis Tibialis anterior, tibialis posterior Flexes or extends foot at ankle

Common

Terms for

Muscle Groups

Muscles Function