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Musculoskeletal Anatomy Quiz. The bones, muscles and muscular action below the belt…. What’s to Come. Quick review of the bones Origin, insertion, and action of muscles Muscles categorized by their action Test yourself with the diagram and click for the answer…. All images scanned from: - PowerPoint PPT Presentation
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Musculoskeletal Anatomy Quiz
The bones, muscles and muscular action below the
belt…
What’s to Come Quick review of the bones Origin, insertion, and action of
muscles Muscles categorized by their action
Test yourself with the diagram and click for the answer…
All images scanned from: Sieg & Adams, Illustrated Essentials of Musculoskeletal Anatomy
Bones in Review
Pelvis (letters first)
1. Iliac crest2. Iliac fossa3. Superior (posterior) gluteal line4. Middle (anterior) gluteal line5. Inferior gluteal line6. Anterior superior iliac spine7. Anterior inferior iliac spine8. Posterior superior iliac spine9. Posterior inferior iliac spine10. Greater sciatic notch11. Ischial tuberosity12. Ischial spine13. Lesser sciatic notch14. Ramus of ischium15. Pubic crest16. Pubic symphysis17. Body of pubis18. Superior ramus of pubis19. Inferior ramus of pubis
A. IliumB. IschiumC. PubisD. AcetabulumE. Obturator foramenF. SacrumG. Coccyx
Femur1. Head2. Neck3. Greater trochanter4. Lesser trochanter5. Intertrochanteric line6. Intertrochanteric crest7. Trochanter fossa8. Quatrate tubercle9. Gluteal tuberosity10. Linea aspera11. Adductor tubercle12. Medial epicondyle13. Lateral epicondyle14. Patellar surface15. Medial supracondylar line16. Lateral supracondylar line17. Medial condyle18. Lateral condyle19. Popliteal surface20. Intercondylar notch
Tibia and Fibula1. Styloid process2. Head3. Neck4. Interosseous
border5. Lateral malleolus6. Shaft7. Medial condyle8. Lateral condyle9. Tibial tuberosity10. Soleal line11. Shaft12. Interosseous
border13. Medial malleolus
Foot (without animation)
Extensors of Spine
Spinalis thoracis / cervicis spinous processes of T11-12,
L1-2 transverse processes of T6-10 transverse processes of T1-6
Spinous processes of T1-8 Spinous processes of C6-7, T1-
4 Spinous processes of C2-5
extend and rotate vertebral column
Origin(3)
Insertion(3)
Action
semispinalis thoracis / cervicus
Origin(3)
Insertion(3)
Action
spinous processes of T11-12, L1-2
transverse processes of T6-10 transverse processes of T1-6
Spinous processes of T1-8 Spinous processes of C6-7, T1-
4 Spinous processes of C2-5
extend and rotate vertebral column
Leg / Hip Flexors
Psoas Major bodies, transverse
processes lumbar vertebrae
lesser trochanter of femur
flexes and rotates thigh laterally
flexes vertebrae
Origin
Insertion
Action(2)
Iliacus iliac fossa of ilium
lesser trochanter of femur
flexes and rotates thigh laterally
flexes vertebrae
Origin
Insertion
Action(2)
Leg Extensors & Abductors
Gluteus Maximus iliac crest, sacrum, coccyx
gluteal tuberosity of femur
extends and rotates thigh laterally
Origin
Insertion
Action
Gluteus Medius lateral ilium
greater trochanter of femur
abducts thigh
Origin
Insertion
Action
Gluteus Minimus lateral ilium
greater trochanter of femur
abducts thigh
Origin
Insertion
Action
Tensor Fasciae Latae anterior iliac crest
tibia via iliotibial tract
abducts, flexes thigh
Origin
Insertion
Action
Leg Adductors
Adductor Longus pubic crest near symphysis
pubis
linea aspera of femur
adducts, flexes thigh
Origin
Insertion
Action
Anterior
Adductor Magnus ischial tuberosity pubis
linea aspera of femur adductor tubercle
adducts femur anterior fibers assist
flexion of femur at hip Posterior fibers assist
extension of femur at hip
Origin(2)
Insertion(2)
Action(3)
Gracilis pubic ramus
medial surface of tibial shaft
adducts thigh flexes leg at knee
Origin
Insertion
Action(2)
Leg Flexors
Biceps Femoris long head - ischial
tuberosity short head - linea aspera
of femur
head of fibula lateral condyle of tibia
flexes knee extends thigh
Origin(2)
Insertion(2)
Action(2)
Semitendinosus ischial
tuberosity
medial, proximal surface of tibia
flexes knee extends thigh
Origin
Insertion
Action(2)
Semimembranosus ischial tuberosity
medial condyle of tibia
flexes knee extends thigh
Origin
Insertion
Action(2)
Sartorius anterior superior iliac
spine
medial surface of tibia proximal surface of tibia
flexes leg and thigh rotates thigh laterally
(crosses leg)
Origin
Insertion(2)
Action(2)
Leg Extensors
Rectus Femoris anterior inferior iliac
spine
patella by common tendon; continues as ligament to tibial tuberosity
extends leg at knee
Origin
Insertion
Action
Vestus: medialis, lateralis intermedius
anterior/medial surface femur
greater trochanter femur anterior lateral shaft of
femur
patella by common tendon; continues as ligament to tibial tuberosity
extends leg at knee
Originmedialislateralis
intermedius
Insertion
Action
Dorsiflexors
Tibialis Anterior lateral condyle/surface of
tibia
1st meta tarsal 1st cuneiform
dorsiflexion inversion of foot
Origin
Insertion(2)
Action(2)
Peroneus Tertius distal third anterior fibula
5th metatarsal
dorsiflexion eversion of foot
Origin
Insertion
Action(2)
Extensor Digitorum Longus
lateral condyle of the tibia anterior surface of fibula
dorsal surfaces of 2nd, 3rd phlanges of 4 lateral toes
dorsiflexion eversion toe extension
Origin(2)
Insertion
Action(3)
Plantar Flexors
Gastrocnemius lateral/medial
condyles of femur
posterior surface of calcaneus
plantar flexion flexion of leg at knee
Origin
Insertion
Action(2)
Soleus head/shaft of fibula posterior tibial surface
posterior surface calcaneus
plantar flexion of foot
Origin(2)
Insertion
Action
Flexor Digitorum Longus posterior surface of
tibia
distal phlanges of 4 lateral toes
plantar flexion inversion of foot flexion of four lateral
toes
Origin
Insertion
Action(3)
Tibialis Posterior lateral condyle posterior
tibial/fibular surface
tarsal bones metatarsal bones
plantar flexion inversion of foot
Origin
Insertion(2)
Action(2)
Peroneus Longus lateral condyle of
tibia fibular head/shaft
tarsal metatarsals
plantar flexion eversion of foot
Origin(2)
Insertion(2)
Action(2)
Muscles by Action
Hip / Leg Medial Rotator1. Gluteus medius2. Gluteus minimus3. Tensor fasciae
latae4. Petineus
5. Adductor longus6. Adductor brevis7. Adductor magnus
(horizontal fibers)
Leg Flexor & Extensor
1. Gluteus maximus2. Biceps femoris (long head)3. Semitendinosus4. Semimembranosus5. Adductor magnus (posterior
portion)
1. Iliopsoas2. Pectineus3. Tensor fasciae latae4. Adductor brevis5. Adductor longus6. Adductor magnus
(anterior portion)7. Rectus femoris8. Sartorius
Extensors
Flexors
Leg Adductors & Abductors
1. Gluteus medius2. Gluteus minimus3. Tensor fasciae latae4. Sartorius
1. Adductor brevis2. Adductor longus3. Adductor magnus4. Gracilis
Adductors
Abductors
Knee
1. Vastus lateralis2. Vastus intermedius3. Vastus medialis4. Rectus femoris5. Tensor fascia latae
1. Biceps femoris2. Semitendinosus3. Semimembranosu
s4. Sartorius5. Gracilis6. Gastrocnemius
Extensors
Flexors
Knee Rotators
Biceps femoris
1. Semitendinosus2. Semimembranosu
s3. Popliteus4. Gracilis5. sartorius
Lateral
Medial
Ankle
1. Tibialis anterior2. Extensor digitorum
longus3. Peroneus tertius4. Extensor hallucis longus
1. Gastrocnemius2. Soleus3. Plantaris4. Peroneus longus5. Peroneus brevis6. Tibialis posterior7. Flexor hallucis longus8. Flexor digitorum
longus (not shown)
Dorsiflexors
Plantar flexors
Foot
1. Tibialis anterior2. Tibialis posterior
1. Peroneus tertius2. Peroneus longus3. Peroneus brevis
Invertors
Evertors
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