Transcript Muscle Review - BEHS Science

Muscle Review
Psoas Major
• O: Lumbar Vert.
• I: Femur
• A: Flexes thigh
Iliacus
• O: Ilium
• I: Femur
• A: Flexes Thigh
Gluteus Maximus
• O: Sacrum, Coccyx,
and ilium
• I: Femur, Facia
• A: Extends thigh
Gluteus Medius
• O: Ilium
• I: Femur
• A: Abducts, rotates
thigh medial
Adductor Longus
• O: Pubic Bone
• I: Posterior of Femur
• A: Adducts thigh
Adductor Magnus
• O: Ischium
• I: Femur
• A: Adducts thigh,
rotates thigh laterally
Gracilis
• O: Pubis
• I: Tibia
• A: Adducts thigh,
rotates lower limb
medially
Sartorius
• O: Ilium
• I: Tibia
• A: Flexes leg, abducts
thigh, rotates thigh
laterally (Gum on
shoe)
• *Longest muscle
Biceps femoris
• O: Ischium, femur
• I: Tibia, fibula
• A: Flexes leg, extends
thigh
• *1 of 3 Hamstring
Semitendinosus
• O: Ischium
• I: Tibia
• A: Flexes Leg,
extends thigh
• *2 of 3 Hamstring
Semimembranosus*
• O: Ischium
• I: Tibia
• A: flexes leg, extends
thigh
• *3 of 3 hamstring
Rectus Femoris * Quadriceps (¼)
• O: Ilium
• I: Patella leading to
tibia
• A: Extends leg at
knee
• *Antagonist of
hamstrings
Vastus Lateralis (2/4)
• O: Posterior of Femur
• I: Patella leading to
tibia
• A: Extends leg at
knee
Vastus Medialis (3/4)
• O: Medial surface of
Femur
• I: Patella leading to
tibia
• A: Extends leg at
knee
Vastus Intermedius* (4/4)
• O: Anterior surface of
the femur
• I: Patella leading to
tibia
• A: Extends leg at
knee
Tibialis Anterior
• O: Lateral surface of
tibia
• I: Tarsal bones
(cuneiform) 1st
metatarsal
• A: Dorsiflexion and
inversion of foot
Gastrocnemius
• O: Femur
• I: Posterior surface of
the Calcaneus
• A: Plantar flexion of
foot, flex knee
My wife and I working out.
Soleus
• O: Fibula and Tibia
• I: Posterior surface of
calcaneus
• A: Plantar flexion of
foot
Fibularis Longus
• O: Tibia and Fibula
• I: Tarsals and
metatarsals
• A: Plantar flexion,
• * Extensor Digitorium